記述言語：日本語   出版者・発行元：(株)アークメディア  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

This study sought to identify factors that are predictive of a therapeutic response to hepatic arterial infusion chemotherapy (HAIC) by focusing on the number of prior transcatheter arterial chemoembolization (TACE) sessions. To determine the parameters predicting a good response to HAIC, we retrospectively analyzed 170 patients with hepatocellular carcinoma (HCC) who received HAIC regimens comprising low-dose cisplatin combined with 5-fluorouracil (LFP) or cisplatin (CDDP) for the first time. In both the LFP and CDDP regimens, the response rates were significantly lower in patients with three or more prior TACE sessions than in those with two or fewer prior TACE sessions (LFP 57% versus 28%; p=0.01, CDDP 27% versus 6%; p=0.01). Multivariable logistic regression analysis revealed that the number of prior TACE sessions (≥ 3) was significantly associated with non-responder status (odds ratio 4.17, 95% Confidence Interval (CI) 1.76-9.86) in addition to the HAIC regimen. Multivariable analysis using the Cox proportional hazards model revealed that a larger number of prior TACE sessions (≥ 3) was a significant risk factor for survival (hazard ratio 1.60, 95% CI 1.12-2.29) in addition to Child-Pugh class, serum alpha-fetoprotein concentration, and maximum diameter of HCC. HCC patients who receive fewer prior TACE sessions (≤ 2) were found to be better responders to HAIC.

DOI： 10.18926/AMO/64120

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Anorexia nervosa (AN) can cause severe protein energy malnutrition and the consequent development of various organ disorders. AN is known to cause hepatic complications. We report two cases of starvation and refeeding-induced liver injury in patients with AN, and review the literature on the hepatic complications of AN. Acute liver injury can be induced by both starvation and refeeding, although the underlying pathomechanisms and management of liver injury differ between these two conditions. Clinicians should carefully identify the clinical features to ensure an accurate diagnosis and appropriate management of these conditions.

DOI： 10.2739/kurumemedj.MS6723011

PubMed

researchmap

記述言語：日本語   出版者・発行元：(株)アークメディア  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：(株)アークメディア  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：日本語   出版者・発行元：(株)アークメディア  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

AIM: Some autoimmune hepatitis (AIH) patients experience relapse during their clinical course, and some risk factors for relapse have been identified previously using a relatively small sample size. The aim of the present study was to identify the risk factors for relapse in recently diagnosed AIH patients using a nationwide survey in Japan. METHODS: The nationwide survey performed in Japan in 2018 of AIH patients diagnosed between 2014 and 2017 was re-evaluated. A total of 614 patients who received corticosteroids were enrolled in the present study. Associations between relapse and patients' characteristics at diagnosis were evaluated using logistic regression analysis. RESULTS: Relapse was identified in 143 (23.3%) patients after remission. At the time of diagnosis of the disease, there were significant differences in the γ-glutamyl transpeptidase (γ-GTP) level, prevalence of liver cirrhosis, and degree of liver fibrosis. Multivariable logistic regression analysis showed that γ-GTP elevation and liver cirrhosis were significantly associated with relapse. CONCLUSION: The γ-GTP level at diagnosis could help identify AIH patients at higher risk of relapse. This article is protected by copyright. All rights reserved.

DOI： 10.1111/hepr.13766

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: Anti-programmed death 1/programmed death ligand 1 (PD1/PD-L1) antibodies have been successfully used as treatment agents for several solid tumors; however, it is difficult to predict their effectiveness. We evaluated whether biopsy specimens could predict the positive status of PD-L1 in surgically resected tissue. METHODS: Among 91 patients who underwent tissue sampling with endoscopic or liver biopsy before surgery for biliary tract neoplasms in an academic center, 45 (49%) patients were selected for retrospective analysis because the quality and quantity of their biopsy specimens were adequate for histologic evaluation. We performed immunohistochemical staining to investigate the PD-L1 expression in both resected and biopsy specimens. The percentage of the positively stained cells was calculated for subsequent use in the correlation investigation. RESULTS: The biopsy methods were endoscopic retrograde cholangiopancreatography (ERCP) in 28 cases, percutaneous liver biopsy in 10 cases, and endoscopic ultrasound fine-needle aspiration in 7 cases. Among the 45 patients, when patients with > 10% positive tumor cells in surgically resected tissues were regarded as truly positive PD-L1, the positive and negative concordance rates between surgically resected tissues and biopsy samples were 56% (5/9) and 100% (36/36), respectively. With regard to the use of preoperative biopsy as a diagnostic tool, all (5/5) PD-L1-positive patients had a positive resected specimen. The accuracy of each biopsy method was as follows: ERCP, 89% (25/28); fine-needle aspiration, 86% (6/7); and liver biopsy, 100% (10/10). CONCLUSIONS: Biopsy samples could be a surrogate material for the assessment of the PD-L1 expression with substantial positive and high negative concordance rates.

DOI： 10.1007/s11605-021-05197-6

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本成人先天性心疾患学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: The number of patients with non-functional neuroendocrine tumors (NETs) has increased recently, and the rate of liver metastasis of NETs is about 20% in patients at the first diagnosis. Transcatheter arterial embolization (TAE) and everolimus are therapies with reported efficacy, but few reports have described their combined treatment. We therefore aim to evaluate the efficacy and safety of combination therapy with everolimus and TAE in patients with liver metastasis of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) in a prospective study. METHODS: We design a single-arm, open-label, prospective study to evaluate the efficacy and safety of combination therapy with everolimus and TAE in patients with liver metastases of GEP-NETs. The study started in June 2021 at Okayama University Hospital and is expected to enroll 18 patients over a 2-year period. DISCUSSION: This study is a prospective study investigating a new treatment method for a rare disease called GEP-NETs. We may obtain useful information that contributes to the treatment guidelines in this study. However, NET is a rare disease, and although the number of cases is statistically established, it may not be possible to accurately assess causality.TRIAL REGISTRATION NUMBER: jRCT1061210015.

DOI： 10.1177/11795549221127750

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Focal nodular hyperplasia (FNH) is a benign nodular lesion, but because of its feature of portal tract vessel abnormality, it may induce portal hypertension. A 27-year-old woman was admitted with a fever. A large nodule with satellite lesions was found in the liver and cotton wool-like feature of arteries were detected on angiography. Technetium galactosyl serum albumin scintigraphy and diagnostic laparoscopy showed that the tumor site was functional, while the surrounding area was a non-functional fibrotic area. A biopsy specimen indicated that the nodular lesion was an FNH-like lesion. She experienced several instances of variceal rupture and suffered liver failure, receiving liver transplantation. The excised liver showed a centrally scarred area in the nodule, indicating that the diagnosis was FNH. We herein report this case as a rare case of FNH that progressed to liver failure.

DOI： 10.1007/s12328-021-01529-w

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: It remains unclear which factors, such as tumor volume and tumor invasion, influence circulating tumor DNA (ctDNA), and the origin of ctDNA in liquid biopsy is always problematic. To use liquid biopsies clinically, it will be very important to address these questions. AIM: To assess the origin of ctDNA, clarify the dynamics of ctDNA levels, assess ctDNA levels by using a xenograft mouse after treatment, and to determine whether tumor volume and invasion are related to ctDNA levels. METHODS: Tumor xenotransplants were established by inoculating BALB/c-nu/nu mice with the TE11 cell line. Groups of mice were injected with xenografts at two or four sites and sacrificed at the appropriate time point after xenotransplantation for ctDNA analysis. Analysis of ctDNA was performed by droplet digital PCR, using the human telomerase reverse transcriptase (hTERT) gene. RESULTS: Mice given two-site xenografts were sacrificed for ctDNA at week 4 and week 8. No hTERT was detected at week 4, but it was detected at week 8. However, in four-site xenograft mice, hTERT was detected both at week 4 and week 6. These experiments revealed that both tumor invasion and tumor volume were associated with the detection of ctDNA. In resection experiments, hTERT was detected at resection, but had decreased by 6 h, and was no longer detected 1 and 3 d after resection. CONCLUSION: We clarified the origin and dynamics of ctDNA, showing that tumor volume is an important factor. We also found that when the tumor was completely resected, ctDNA was absent after one or more days.

DOI： 10.3748/wjg.v27.i41.7134

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Waldenström macroglobulinemia (WM)/lymphoplasmacytic lymphoma (LPL) is a rare indolent B-cell neoplasm, and a gain-of-function mutation in the myeloid differentiation primary response 88 (MYD88), L265P, is a commonly recurring mutation in patients with WM/LPL. Histological transformation of WM/LPL to an aggressive lymphoma such as diffuse large B-cell lymphoma (DLBCL) is rare, and transformed DLBCL has a worse prognosis than de novo DLBCL, partly because transformed DLBCL is mostly classified as non-germinal center B-cell-like (non-GCB) subtype. We herein describe a 75-year-old man with DLBCL with a history of WM/LPL. DLBCL in this patient showed the GCB subtype, and the light chain restriction of DLBCL was different from that of the antecedent WM/LPL, indicating that the two types of lymphoma cells had distinctive origins. However, DLBCL in this patient harbored the MYD88 L265P mutation, and polymerase chain reaction and Sanger sequencing of the DLBCL and WM/LPL for immunoglobulin heavy chain gene rearrangement suggested a clonal relationship between the two lymphomas. Since the outcome of transformed DLBCL is worse than for de novo DLBCL, it is important to evaluate the clonal relationship between primary WM/LPL and the corresponding transformed DLBCL, even if the DLBCL expresses a GCB subtype or discordant light chain restriction.

DOI： 10.1007/s12185-021-03157-z

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

症例は64歳,男性.過去の健診でビリルビン高値の指摘あり.家人に黄疸を指摘され,前医を受診,AST 1526U/l,ALT 2058U/lと肝障害を認め入院,ビリルビン上昇も伴っていたが,PT正常で急性肝不全には陥っていなかった.HEV RNA陽性が判明,肝生検で急性肝炎像を呈しており,急性E型肝炎として保存的加療となった.Transaminseは低下,PTも正常範囲を維持,HEV RNA陰性化したが高ビリルビン血症悪化,第75病日に転院.急性腎不全を合併,消化管出血,更に細菌性・真菌性敗血症を合併し,第169病日に死亡した.病理解剖にて,肝臓は萎縮もなく,肝細胞壊死や肝線維化は軽度で強い胆汁栓を認める所見であった.肝合成能は維持されるも胆汁うっ滞が遷延し,全身合併症により死亡したと考えられ,移植適応をどう考えていくかを含めて示唆に富む症例であり,報告する.(著者抄録)

researchmap

その他リンク： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J00263&link_issn=&doc_id=20210811100004&doc_link_id=10.2957%2Fkanzo.62.463&url=https%3A%2F%2Fdoi.org%2F10.2957%2Fkanzo.62.463&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

記述言語：英語   掲載種別：研究論文（学術雑誌）  

AIM: Hepatic arterial infusion chemotherapy (HAIC) with cisplatin is beneficial to patients with advanced hepatocellular carcinoma (HCC) treated with sorafenib. This study aimed to examine the effect of HAIC with cisplatin before radiofrequency ablation (RFA) in patients with HCC. METHODS: This was a multicenter, single-blinded, randomized controlled study (UMIN000007267). Early-stage HCC patients were randomly assigned (1:1) to receive HAIC with cisplatin before RFA therapy (HAIC group) or RFA monotherapy (non-HAIC group). The primary end-point was recurrence-free survival. Efficacy analysis and safety analysis followed the intention-to-treat principle. RESULTS: Between August 2012 and July 2016, 74 patients were recruited. A total of 70 eligible patients were randomly assigned to the HAIC group (n = 35) and non-HAIC group (n = 35). Recurrence-free survival rates at 1 (3) year in the HAIC group and non-HAIC group were 82.9% (54.3%) and 74.3% (34.3%), respectively (hazard ratio [HR], 0.597; 95% confidence interval [CI], 0.320-1.091; p = 0.094]. Subgroup analysis showed that the beneficial effect of HAIC was observed in patients with a single nodule and Child-Pugh score 5. Intrahepatic distant recurrence-free survival rate in the HAIC group was significantly better than that in the non-HAIC group (HR, 0.468; 95% CI, 0.235-0.896; p = 0.022). Adverse events were observed in just two patients in the HAIC group (6%) - grade 2 cholecystitis and grade 2 hyperkalemia. CONCLUSIONS: HAIC with cisplatin before RFA did not significantly decrease recurrence in patients with early-stage HCC. However, it might be effective in preventing intrahepatic distant recurrence.

DOI： 10.1111/hepr.13633

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Tolvaptan is a recently available diuretic that blocks arginine vasopressin receptor 2 in the renal collecting duct. Its diuretic mechanism involves selective water reabsorption by affecting the water reabsorption receptor aquaporin 2. Given that liver cirrhosis patients exhibit hyponatremia due to their pseudo-aldosteronism and usage of natriuretic agents, a sodium maintaining agent, such as tolvaptan, is physiologically preferable. However, large scale studies indicating the patients for whom this would be effective and describing management under its use have been insufficient. The appropriate management of cirrhosis patients treated with tolvaptan should be investigated. In the present review, we collected articles investigating the effectiveness of tolvaptan and factors associated with survival and summarized their management reports. Earlier administration of tolvaptan before increasing the doses of natriuretic agents is recommended because this may preserve effective arterial blood volume.

DOI： 10.3390/ijms22115582

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

AIM: Nonalcoholic steatohepatitis (NASH) is a risk factor for nonvirus-related hepatocellular carcinoma, which is increasing in prevalence. The aim of this study was to clarify the clinical application of fucosylated alpha-fetoprotein (AFP-L3) in the process of nonalcoholic fatty liver (NAFL) disease development. METHODS: Serum samples from 115 diabetes mellitus (DM), 36 NAFL, and 119 NASH patients were analyzed for AFP-L3 expression using raw data of a micro total analysis system. These data were then compared with the clinical characteristics of the patients. A validation study was also undertaken with 55 samples (17 NAFL and 38 NASH). RESULTS: Trace amounts of AFP-L3 were detected in 3.5%, 16.7%, and 58.0% of patients with DM, NAFL, and NASH, respectively. The odds ratio of AFP-L3 positivity for the diagnosis of NASH in multivariate analysis was 9.81 (95% confidence interval, 3.77-25.5). The rates in patients without fibrosis or with stage 1, stage 2, stage 3, and stage 4 fibrosis were 14.7%, 31.3%, 63.0%, 86.2%, and 100%, respectively. The rates were significantly increased according to the advancement of liver fibrosis (p < 0.001); however, no difference in the positive rate of AFP-L3 was observed between patients with and without fatty livers and between patients with normal and abnormal transaminase. The same relationship was also observed in the validation cohort. CONCLUSION: Abnormal fucosylation of AFP occurred in patients with NASH, so it could be useful for the screening of NASH in patients with DM, as well as for the differential diagnosis of NASH and the evaluation of fibrosis.

DOI： 10.1111/hepr.13626

PubMed

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND ANDAIM: Human telomerase reverse transcriptase (TERT) promoter mutations were the most prevalent mutations in patients with hepatocellular carcinoma (HCC). We tried to detect the mutations with plasma circulating tumor DNA (ctDNA) in patients with advanced HCC and elucidated their clinical utility. METHODS: Circulating tumor DNA in plasma was extracted from 130 patients with advanced HCC who were treated with systemic chemotherapy (n = 86) or transcatheter arterial chemoembolization (n = 44), and TERT promoter mutations were examined with digital droplet polymerase chain reaction. The correlations between these mutations and the clinical outcome of patients were analyzed. RESULTS: Of the 130 patients examined, 71 patients (54.6%) were positive for TERT promoter mutations in ctDNA, of which 64 patients were -124bp G > A and 10 were -146bp G > A. The presence of TERT promoter mutations was correlated with large intrahepatic tumor size (P = 0.05) and high des-gamma carboxyprothrombin (P = 0.005). Overall survival of the patients with the mutations was significantly shorter than those without them (P < 0.001), and the patients with high (≥ 1%) fractional abundance of the mutant alleles showed shorter survival than those with low (< 1%) fractional abundance. Multivariate analysis revealed that TERT promoter mutation (hazard ratio [HR]: 1.94; 95% confidence interval [CI], 1.18-3.24; P < 0.01), systemic chemotherapy (HR: 2.38; 95% CI, 1.29-4.57; P < 0.01), and vascular invasion (HR: 2.16; 95% CI, 1.22-3.76; P < 0.01) were significant factors for poor overall survival. CONCLUSIONS: TERT promoter mutations in ctDNA were associated with short survival and could be a valuable biomarker for predicting the prognosis of patients with advanced HCC.

DOI： 10.1111/jgh.15227

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s00795-020-00255-5

PubMed

researchmap

その他リンク： https://link.springer.com/article/10.1007/s00795-020-00255-5/fulltext.html

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: We recently reported the real-world changes in the etiologies of liver cirrhosis (LC) based on nationwide survey data and assessed the etiologies of LC with hepatocellular carcinoma (HCC). METHODS: Fifty-five participants from 68 institutions provided data on 23,637 patients with HCC-complicated LC. The changing trends in etiologies were assessed. We further analyzed the data from 29 hospitals that provided the annual number of newly identified HCC-complicated LC patients from 2008 to 2016 (N = 9362) without any missing years and assessed the transition in the real number of newly identified HCC-complicated LC cases. RESULTS: In the overall cohort, hepatitis C virus (HCV) infection (60.3%) and hepatitis B virus (HBV) infection (12.9%) were the leading and third-most common causes of HCC-complicated LC in Japan, respectively. HCV infection was found to be the leading cause throughout Japan. The rate of viral hepatitis-related HCC decreased from 85.3 to 64.4%. Among non-viral etiologies, notable increases were observed in nonalcoholic steatohepatitis (NASH)-related HCC (from 1.5 to 7.2%) and alcoholic liver disease (ALD)-related HCC (from 8.5 to 18.6%). Regarding the real number of newly diagnosed patients, the number of patients with viral hepatitis-related HCC decreased, while the number of patients with non-viral HCC, particularly NASH-related HCC, increased. CONCLUSIONS: Viral hepatitis has remained the main cause of HCC in Japan. However, the decrease in viral hepatitis-related HCC, particularly HCV-related HCC highly contributed to the etiological changes. In addition, the increased incidence of non-viral HCC, particularly NASH-related HCC, was involved in the changing etiologies of HCC-complicated LC in Japan.

DOI： 10.1007/s00535-020-01748-x

PubMed

researchmap

掲載種別：研究論文（学術雑誌）  

A 64-year-old man in whom benign hyperbilirubinemia had been identified was found to suffer from acute hepatitis E. Laboratory examination of the patient revealed high transaminase levels and hyperbilirubinemia, suggesting acute hepatitis, while the prothrombin time was within the normal range. The transaminase levels decreased and prothrombin time remained within the normal range; however, hyperbilirubinemia worsened to 39 mg/dl. The patient developed the complications of acute renal failure and sepsis, and eventually died. An autopsy was performed that showed no liver atrophy, liver fibrosis progression, or massive necrosis. The lung and kidney were revealed to be positive for fungal infection. The kidney was revealed to exhibit tubular conges-tion with bile. The present case offers information on the clinical course of acute hepatitis E in relatively elderly patients.

DOI： 10.2957/kanzo.62.463

Scopus

researchmap

掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/hepr.13573

researchmap

その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/hepr.13573

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Ovid Technologies (Wolters Kluwer Health)  

Health-related quality of life (HRQOL) is lower in individuals with autoimmune hepatitis (AIH) than in the general population. However, previous evaluations of HRQOL for AIH have included a broad range of disease activities. The aim of this study was to clarify HRQOL among patients with AIH in remission.We assessed HRQOL in patients with AIH in remission, patients with chronic hepatitis C (CHC) with eradicated hepatitis C virus (HCV) and patients with primary biliary cholangitis (PBC) using the Japanese version of the Chronic Liver Disease Questionnaire (CLDQ).Participants comprised 62 patients with AIH in remission, 39 patients with CHC with eradicated HCV and 66 patients with PBC. Median ages of patients were 63, 69, and 64 years, respectively. Overall score (5.6 vs 5.9, P = .02) and fatigue (5.2 vs 5.6, P = .01) and worry (5.6 vs 6.0, P = .01) domain scores of the CLDQ were significantly lower in patients with AIH in remission than in CHC with eradicated HCV, and similar to scores except for the systemic symptoms domain in patients with PBC. Disease duration was associated with lower scores on systemic symptoms and activity domains of the CLDQ in patients with AIH in remission.Patients with AIH in remission show impaired HRQOL associated with disease duration.

DOI： 10.1097/md.0000000000022764

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

The Japanese diagnostic guidelines for autoimmune hepatitis (AIH) were proposed in 2014. This study aimed to determine the trends and characteristics of AIH based on a Japanese nationwide survey. Data for 796 patients who were newly diagnosed with AIH from 2014 to 2017 were collected from January to March, 2019 from 54 hospitals throughout Japan. Clinical characteristics, including treatment, were compared with those reported in a prior 2015 survey. The population had a median age of 63 years at diagnosis, and the male to female ratio was 1:5.3. The numbers of women was significantly lower in this survey than in the 2015 survey. Moreover, the incidence of AIH with histological acute hepatitis increased significantly from 11.0 to 21.7%. The changes in the laboratory findings, such as in transaminase and immunoglobulin G levels and antinuclear antibody titers, as well as in prednisolone treatment, reflected an increasing incidence of acute AIH. The clinical characteristics of AIH changed rapidly, in parallel with the increasing incidence of acute AIH. The elucidation and diagnosis of AIH with acute hepatitis are important in the management of AIH.

DOI： 10.1038/s41598-020-71296-0

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC) is a promising method for controlling tumors, although it does not entirely eliminate recurrence. Oxidative stress is associated with the progression of hepatocarcinogenesis, while also acting as an anticancer response. The objective of the present study was to investigate the factors influencing post-RFA outcomes. We recruited 235 newly diagnosed HCC patients who received RFA for single tumors. The patients with recurrence were sub-grouped into early and segmental recurrence groups. The characteristics of the sub-grouped patients were evaluated, including by measuring oxidative stress marker reactive oxygen metabolites and antioxidant marker OXY-adsorbent tests. The factors associated with poor survival were a high Child-Pugh score and early recurrence within 2 years in the same segment. The patients who experienced recurrence within 2 years in the same segment showed a larger tumor diameter than did others. According to a multivariate analysis, the OXY values were also significantly low in these patients. In conclusion, maintaining the antioxidant reservoir function with a high OXY value might be necessary to prevent early recurrence within the RFA-treated segment.

DOI： 10.18926/AMO/60364

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Introduction: Molecular targeting drugs are recommended as second-line treatment for intrahepatic advanced hepatocellular carcinoma (HCC). However, in Asia, hepatic arterial infusion chemotherapy (HAIC) is also considered as a second-line treatment because it improves the survival of responders. The aim of this study was to predict responders and non-responders to HAIC with low-dose cisplatin plus 5-fluorouracil (LFP) using tumor markers. Objective and Methods: The data of 47 patients who received LFP for the first time in our hospital were analyzed retrospectively. We evaluated the association between treatment response by Response Evaluation Criteria in Solid Tumors and the changing ratio of the serum concentration of α-fetoprotein (AFP), Lens culinaris agglutinin-reactive fraction of AFP (AFP-L3), and des-γ-carboxy prothrombin (DCP) 2 weeks after LFP initiation. Results: The number of patients showing a complete response (CR), a partial response (PR), stable disease (SD), and progressive disease (PD) was 0 (0%), 20 (43%), 18 (38%), and 9 (19%), respectively. The AFP ratio showed significant positive correlations for PR vs. SD (p = 0.004) and PR vs. PD (p = 0.003). The DCP ratio correlated significantly for PR vs. SD (p = 0.02). The optimal cutoff values for responders were 0.79 for the AFP ratio and 0.53 for the DCP ratio. Prediction using both or either cutoff value showed 93% sensitivity, 53% specificity, a 94% negative predictive value, and a 57% positive predictive value. Conclusion: Optimal cutoff values for AFP and DCP ratios enable prediction of nonresponders to HAIC with LFP. This simple and early assessment method allows the use of HAIC and molecular targeting drugs for HCC treatment.

DOI： 10.1159/000506941

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Chronic viral hepatitis B and C and non-alcoholic fatty liver disease (NAFLD) have been widely acknowledged to be the leading causes of liver cirrhosis and hepatocellular carcinoma. As anti-viral treatment progresses, the impact of NAFLD is increasing. NAFLD can coexist with chronic viral hepatitis and exacerbate its progression. Oxidative stress has been recognized as a chronic liver disease progression-related and cancer-initiating stress response. However, there are still many unresolved issues concerning oxidative stress, such as the correlation between the natural history of the disease and promising treatment protocols. Recent findings indicate that oxidative stress is also an anti-cancer response that is necessary to kill cancer cells. Oxidative stress might therefore be a cancer-initiating response that should be down regulated in the pre-cancerous stage in patients with risk factors for cancer, while it is an anti-cancer cell response that should not be down regulated in the post-cancerous stage, especially in patients using anti-cancer agents. Antioxidant nutrients should be administered carefully according to the patients' disease status. In this review, we will highlight these paradoxical effects of oxidative stress in chronic liver diseases, pre- and post-carcinogenesis.

DOI： 10.3390/nu12061576

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: To assess the recent real-world changes in the etiologies of liver cirrhosis (LC) in Japan, we conducted a nationwide survey in the annual meeting of the Japan Society of Hepatology (JSH). METHODS: We investigated the etiologies of LC patients accumulated from 68 participants in 79 institutions (N = 48,621). We next assessed changing trends in the etiologies of LC by analyzing cases in which the year of diagnosis was available (N = 45,834). We further evaluated the transition in the real number of newly identified LC patients by assessing data from 36 hospitals with complete datasets for 2008-2016 (N = 18,358). RESULTS: In the overall data, HCV infection (48.2%) was the leading cause of LC in Japan, and HBV infection (11.5%) was the third-most common cause. Regarding the transition in the etiologies of LC, the contribution of viral hepatitis-related LC dropped from 73.4 to 49.7%. Among the non-viral etiologies, alcoholic-related disease (ALD) and nonalcoholic steatohepatitis (NASH)-related LC showed a notable increase (from 13.7 to 24.9% and from 2.0 to 9.1%, respectively). Regarding the real numbers of newly diagnosed patients from 2008 to 2016, the numbers of patients with viral hepatitis-related LC decreased, while the numbers of patients with non-viral LC increased. CONCLUSIONS: HCV has remained the main cause of LC in Japan; however, the contribution of viral hepatitis as an etiology of LC is suggested to have been decreasing. In addition, non-viral LC, such as ALD-related LC and NASH-related LC, is suggested to have increased as etiologies of LC in Japan.

DOI： 10.1007/s00535-019-01645-y

Scopus

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

A 78-year-old man with chronic hepatitis C underwent hepatectomy for hepatocellular carcinoma (HCC) 11 years prior to presentation. He was diagnosed with multiple intrahepatic recurrences of HCC with portal vein invasion and received hepatic arterial infusion chemotherapy (HAIC) with cisplatin. He developed abdominal pain, diarrhea, and blood-stained stool following treatment. Computed tomography revealed significant bowel wall thickening throughout the colon. Colonoscopy revealed reddish edematous mucosa with a reduced vascular pattern without ischemic changes. Conservative treatment with total parenteral nutrition improved his condition and his imaging findings. This is the first report of severe colitis following HAIC with cisplatin.

DOI： 10.2169/internalmedicine.3340-19

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: Mutations in the human telomerase reverse transcriptase (hTERT) gene promoter have been reported in hepatocellular carcinoma (HCC); however, analyses of these mutations in liquid biopsies have been technically difficult because of the high GC content of the regions of interest within this promoter. We evaluated the feasibility and prognostic value of hTERT promoter mutations identified in circulating cell-free DNA (cfDNA) from the serum of patients with HCC. OBJECTIVE: A cohort of HCC patients (n = 36) who were curatively treated by surgical resection between June 2003 and September 2014 were enrolled in this study. METHODS: The presence of hTERT promoter mutations in cfDNA from the patients' serum was analyzed via modified droplet digital polymerase chain reaction, and associations were sought between specific promoter mutations and patients' disease-free survival (DFS). RESULTS: The G>A hTERT mutation at -124 bp was detected in the serum of 25 patients (69%). Although no marked differences were observed between the characteristics of the serum mutation-positive and serum mutation-negative patient groups, the DFS of patients with the mutation was significantly shorter than that of the serum mutation-negative patients (p = 0.02). Among 18 clinicopathologic and background liver factors examined, the presence of the -124 bp G>A mutation was an independent and significant predictor of patients' DFS (hazard ratio = 3.01, 95% confidence interval 1.11-10.5, p = 0.03) in multivariate analyses. CONCLUSIONS: The -124 bp G>A hTERT promoter mutation was observed in the serum of 69% of HCC patients who underwent surgical resection and was an independent predictor of disease progression in HCC.

DOI： 10.1159/000506135

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.2217/fon-2019-0115

PubMed

researchmap

DOI： 10.1007/s00535-019-01586-6

Web of Science

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18926/AMO/56935

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/jgh.14535

PubMed

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-四国支部  

researchmap

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/cancers11020213

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18926/AMO/56457

PubMed

researchmap

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/hepr.13288

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-019-48331-w

PubMed

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1248/yakushi.18-00170

Scopus

PubMed

researchmap

DOI： 10.1186/s13256-018-1901-y

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

岡山県では2011年より肝疾患に関わる部署の初任者を対象に肝炎医療研修会を実施し、受講者を地域肝炎対策サポーターと認定してきたが、厚生労働省の示す肝炎医療コーディネーターの役割を果たしているか不明であった。今回、認定者全員に調査票を郵送して、認定から現在までの肝炎に関する活動状況を調査した。地域肝炎対策サポーター298人中146人から回答を得た。回答者の56%が肝疾患関連部署に引き続き勤務し、3割が厚生労働省の示す肝炎医療コーディネーターの役割に合致することを確認した。回答者の24%は他部署へ異動していたが、その56%が日常業務と別に肝炎医療コーディネーター活動を行っており、部署の異動は非専門診療科に肝炎医療コーディネーター活動のできる人材を拡げる良い機会と考えられる。肝炎医療コーディネーターは医療圏の間で偏在を認めなかった。(著者抄録)

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: Autoimmune hepatitis (AIH) is characterized by progressive inflammation and necrosis of hepatocytes and eventually leads to a variety of phenotypes, including acute liver dysfunction, chronic progressive liver disease, and fulminant hepatic failure. Although the precise mechanisms of AIH are unknown, environmental factors may trigger disease onset in genetically predisposed individuals. Patients with the recently established entity of AIH with acute presentation often display atypical clinical features that mimic those of acute hepatitis forms even though AIH is categorized as a chronic liver disease. The aim of this study was to identify the precise clinical features of AIH with acute presentation. METHODS: Eighty-six AIH patients with acute presentation were retrospectively enrolled from facilities across Japan and analyzed for clinical features, histopathological findings, and disease outcomes. RESULTS: Seventy-five patients were female and 11 were male. Patient age ranged from adolescent to over 80 years old, with a median age of 55 years. Median alanine transaminase (ALT) was 776 U/L and median immunoglobulin G (IgG) was 1671 mg/dL. There were no significant differences between genders in terms of ALT (P = 0.27) or IgG (P = 0.51). The number of patients without and with histopathological fibrosis was 29 and 57, respectively. The patients with fibrosis were significantly older than those without (P = 0.015), but no other differences in clinical or histopathological findings were observed. Moreover, antinuclear antibody (ANA)-positive (defined as × 40, N = 63) and -negative (N = 23) patients showed no significant differences in clinical or histopathological findings or disease outcomes. Twenty-five patients experienced disease relapse and two patients died during the study period. ALP ≥ 500 U/L [odds ratio (OR) 3.20; 95% confidence interval (CI) 1.12-9.10; P < 0.030] and GGT ≥ 200 U/L (OR 2.98; 95% CI 1.01-8.77; P = 0.047) were identified as independent risk factors of disease relapse. CONCLUSIONS: AIH with acute presentation is a newly recognized disease entity for which diagnostic hallmarks, such as ALT, fibrosis, and ANA, are needed. Further investigation is also required on the mechanisms of this disorder. Clinicians should be mindful of disease relapse during patient care.

DOI： 10.1007/s00535-018-1444-4

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-018-31063-8

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Daclatasvir (DCV) + asunaprevir (ASV) combination therapy has become available for patients with hepatitis C virus (HCV) serogroup 1 infection. We studied the efficacy of this therapy by focusing on the factors associated with sustained virological responses (SVR) including resistance-associated variants (RAVs) and mixed infection of different HCV genotypes. We enrolled 951 HCV serogroup 1-positive patients who received this combination therapy at our hospital or affiliated hospitals. The presence of RAVs in non-structural (NS) regions 3 and 5A was analyzed by direct sequencing. HCV genotypes were determined by PCR with genotype-specific primers targeting HCV core and NS5B regions. SVR was achieved in 91.1% of patients. Female sex, age > 70 years, and RAVs were significantly associated with non-SVR (p<0.01 for all). Propensity score-matching results among the patients without RAVs regarding sex, age, and fibrosis revealed that mixed HCV infection determined by HCV NS5B genotyping showed significantly lower SVR rates than 1B-mono infection (p=0.02). Female sex and RAVs were significant factors associated with treatment failure of this combination therapy for patients with HCV serogroup 1 infection. Mixed HCV infection other than 1B-mono infection would be useful for predicting treatment failure.

DOI： 10.18926/AMO/56178

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/nu10080977

PubMed

researchmap

記述言語：日本語   出版者・発行元：(株)メディカルレビュー社  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier USA  

When the Budd-Chiari syndrome (BCS) lesion extends to the inferior vena cava (IVC) or the orifices of the hepatic vein, the thickened IVC and/or hepatic vein wall must be removed and IVC reconstruction is required in living-donor liver transplantation (LDLT). In various reports about IVC resection in LDLT for BCS, there are none about left lobe liver transplantation with reconstruction of the retrohepatic IVC (rhIVC). To overcome removal and reconstruction of the rhIVC in LDLT for BCS, we introduced a composite IVC graft that is applicable to both right and left lobe partial liver grafts for LDLT for BCS. Pathogenic IVC was removed together with the native liver between the lower edge of the right atrium and 5 cm above the renal vein junction with the use of venovenous bypass. The e-polytetrafluoroethylene graft was anastomosed to the suprarenal intact IVC. Then the native part was detached at the level of just above the renal junction. The composite graft was inverted and a half rim of the native part of the graft was anastomosed to the posterior wall of the right atrium. Next, the common venous orifice of the left lobe graft was anastomosed to the wall defect which was composed of the anterior wall of the right atrium and the distal end of the native part of the composite graft. In conclusion, our inverted composite graft technique will overcome the weak points of LDLT for BCS, such as incomplete removal of the pathogenic caval wall and reconstruction of the rhIVC.

DOI： 10.1016/j.transproceed.2017.11.078

Scopus

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1186/s12876-018-0793-z

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Unfortunately, in the original publication of this article, the copyright line was incorrectly published in PDF as "© The Author(s) 2017" instead of "©The Author(s) 2017 This article is an open access publication" and also the CC-BY description was not included. The description should be as follows.

DOI： 10.1007/s00535-017-1409-z

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1159/000486548

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND AND AIM: The incidence of non-alcoholic fatty liver disease (NAFLD) is increasing all over the world. NAFLD develops in patients with liver disease, including patients with autoimmune hepatitis (AIH). NAFLD and AIH have some similar laboratory and histological findings. The aim of this study was to elucidate the characteristics of AIH patients with NAFLD. METHODS: We re-evaluated the nationwide survey performed in Japan in 2015 of AIH patients diagnosed between 2009 and 2013. RESULTS: A total of 1151 subjects (144 men and 1007 women) were enrolled in the present study. The overall prevalence of NAFLD was 17.0%. Compared to AIH without NAFLD, AIH patients with NAFLD had the following characteristics: (i) low female-to-male ratio, (ii) older age, (iii) mild elevation in hepatobiliary enzymes, (iv) histologically progressive fibrosis and mild plasma cell infiltration or mild lobular hepatitis, (v) lower prevalence of prednisolone administration and higher prevalence of ursodeoxycholic acid administration, (vi) higher levels of hepatic enzymes and immunoglobulin G after treatment, and (vii) similar prevalence of autoimmune and malignant complications. CONCLUSION: AIH patients with NAFLD have many features that are different from AIH patients without NAFLD. Understanding these differences is essential for the proper diagnosis and treatment of AIH patients with NAFLD.

DOI： 10.1002/jgh3.12046

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18926/AMO/55662

PubMed

researchmap

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

AIM: Health-related quality of life is impaired in patients with autoimmune hepatitis, but the association between health-related quality of life and patients' backgrounds remains unknown. We assessed health-related quality of life in patients with autoimmune hepatitis and identified factors associated with its impairment. METHODS: We assessed health-related quality of life in patients with autoimmune hepatitis, patients with chronic hepatitis C, and healthy subjects using the Japanese version of the Chronic Liver Disease Questionnaire and the 36-Item Short Form Survey. We compared health-related quality of life in patients with autoimmune hepatitis with that of patients with chronic hepatitis C and healthy subjects. RESULTS: A total of 265 patients with autoimmune hepatitis, 88 patients with chronic hepatitis C, and 97 healthy subjects were enrolled; most patients were women. The median ages of patients were 65, 66, and 57 years, respectively. Of these patients with autoimmune hepatitis, 10.6% and 57.0% had cirrhosis and comorbid diseases, respectively. The overall Chronic Liver Disease Questionnaire scores (5.5 vs. 6.2, P < 0.001) and physical (48.1 vs. 54.2, P < 0.001) and mental (51.8 vs. 55.0, P = 0.004) component summaries of 36-Item Short Form Survey were significantly lower in patients with autoimmune hepatitis than in healthy subjects, and similar to scores in patients with chronic hepatitis C. Having cirrhosis, comorbid diseases, and treatment for autoimmune hepatitis were associated with impaired health-related quality of life among patients with autoimmune hepatitis. In particular, prednisolone use was associated with lower scores on the worry domain of the Chronic Liver Disease Questionnaire. CONCLUSIONS: Patients with autoimmune hepatitis showed impairment in health-related quality of life, which was associated with not only disease progression, but also comorbid diseases and treatment. Ways to improve health-related quality of life should be considered in patients with AIH when disease outcome is not favorable and when using prednisolone.

DOI： 10.1371/journal.pone.0204772

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

肝移植後C型肝炎に対するDirect Acting Antivirals(DAA)治療効果を検討した。Genotypelは29症例で、ダクラタスビル+アスナプレビル(DCV+ASV)5例、ソホスブビル+レジパスビル(SOF+LDV)25例(含DCV+ASV無効1例)、Genotype2が2症例でSOF+リバビリン治療を行った。DCV+ASVは5例中4例で治療完遂、3例でSustained viral response(SVR)24を達成。SOF+LDVは全例SVR24を達成、移植後2ヵ月以内の肝炎再燃例も含まれているが問題なく治療完遂可能であった。Genotype2はSVR24を達成。SOF中心レジメンで100%のSVR24達成率であり、移植後早期においても問題なくウイルス駆除達成可能であった。C型肝硬変の肝移植適応評価においてC型肝炎のネガティブインパクトはなくなったと言っても過言ではない。(著者抄録)

researchmap

その他リンク： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2017&ichushi_jid=J00263&link_issn=&doc_id=20171128110001&doc_link_id=10.2957%2Fkanzo.58.599&url=https%3A%2F%2Fdoi.org%2F10.2957%2Fkanzo.58.599&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18926/AMO/55435

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

非肝臓専門診療科で実施される肝炎ウイルス検査の結果が受検者に適切に説明されるように、当院では2013年に電子カルテ上で検査陽性を知らせるアラートの自動表示システムを導入した。このシステムを利用して担当医が説明した割合は28%と不十分であったため、検査実施診療科了解のもと検査陽性者へ検査報告書を郵送し、検査陽性者への報告率は89%と改善した。肝臓専門医への紹介状と返信用書類を同封、郵送半年後に肝臓専門医受診を確認できていない場合は再送し、肝炎専門医受診把握率は49%から72%に改善した(p<0.001)。検査報告書再送で肝精査の必要性に気づき肝臓専門医を受診し、肝炎治療を受けた症例もあった。肝炎ウイルス検査陽性者への報告を徹底することは肝臓専門医受診率の向上や適切な肝炎治療の受療に有用である。(著者抄録)

researchmap

その他リンク： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2017&ichushi_jid=J00263&link_issn=&doc_id=20170830080001&doc_link_id=10.2957%2Fkanzo.58.427&url=https%3A%2F%2Fdoi.org%2F10.2957%2Fkanzo.58.427&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3892/mco.2017.1220

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

出張肝臓病教室では、岡山大学病院の肝疾患サポートチームが職域に出向き、職員全員を対象として肝炎検診受検や肝臓専門機関受診の重要性を説明した。12回の出張肝臓病教室を603人が受講し、アンケート回答に欠損のない565人の回答を分析した。肝臓病で通院中の人は3人(0.5%)、健康診断で今まで肝機能異常を指摘されたことがない人が468人(82.8%)、健康診断で肝臓に関する検査結果を意識してみていない人が263人(46.5%)であった。肝臓病教室を受講して肝炎ウイルス検査を受けようと思った人が300人(53.1%)、既に受けている人が154人(27.3%)で、111人(19.6%)は受けないと回答した。講演が職場の肝臓病に対する偏見や誤解の解消に非常に役立つと思った人が347人(61.4%)、少し役に立つと思った人が208人(36.8%)であった。出張肝臓病教室に参加した306名中288名(94.1%)が肝炎検診を受検し、HBs抗原陽性者3名(1%)、HCV抗体陽性者3名(1%)であった。陽性者6名全員が肝炎専門医療機関を受診した。

researchmap

その他リンク： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2017&ichushi_jid=J00263&link_issn=&doc_id=20170601230005&doc_link_id=10.2957%2Fkanzo.58.304&url=https%3A%2F%2Fdoi.org%2F10.2957%2Fkanzo.58.304&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

記述言語：英語   掲載種別：論文集(書籍)内論文   出版者・発行元：Elsevier  

The pathogenesis of nonalcoholic fatty liver disease (NAFLD) is multifactorial and difficult to unify. The progression of benign nonalcoholic fatty liver (NAFL) to progressive nonalcoholic steatohepatitis (NASH) is acknowledged to be a multiple parallel hit process. Oxidative stress is one of the main factors that drives progression of NAFL to NASH, although it is also essential for vital cellular processes. Overaccumulation of long chain fatty acid results in mitochondrial ?-oxidation pathway activation followed by reactive oxygen species (ROS) production. ROS can mediate the oxidative stress response in hepatocytes, Kupffer cells, or hepatic stellate cells resulting in hepatocyte damage, and in proinflammatory and profibrogenic responses that should be well balanced. ROS detoxification pathway signaling is often damaged in NAFLD following ROS accumulation. Inactivation of pro-oxidant production pathways and activation of detoxifying signaling pathways are the required treatment approach.

DOI： 10.1016/B978-0-12-804274-8.00012-6

Scopus

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Objective Oxidative stress is associated with the progression of chronic liver disease. Non-alcoholic fatty liver disease (NAFLD) is also an oxidative stress-related disease. However, the oxidative/anti-oxidative balance has not been fully characterized in NAFLD. The objective of the present study was to investigate the balance between oxidative stress and the anti-oxidative activity in NAFLD, including non-alcoholic steatohepatitis (NASH)-related hepatocellular carcinoma (HCC). Patients We recruited 69 patients with histologically proven NAFLD without HCC (NAFLD; n=58), and with NASH-related HCC (NASH-HCC; n=11). The 58 NAFLD patients included patients with non-alcoholic fatty liver (NAFL; n=14) and NASH (n=44). Methods The serum levels of reactive oxygen metabolites (ROM) and anti-oxidative markers (OXY) were determined and then used to calculate the oxidative index. The correlations among such factors as ROM, OXY, oxidative index, and clinical characteristics were investigated. Results In NAFLD, ROM positively correlated with the body mass index (BMI), hemoglobin A1c (HbA1c), C-reactive protein (CRP), and the histological grade or inflammatory scores, while only high HbA1c and CRP levels were significant factors that correlated with a higher ROM according to a multivariate analysis. OXY positively correlated with the platelet counts, albumin, and creatinine levels, while negatively correlating with age. However, it improved after treatment intervention. The oxidative index positively correlated with BMI, CRP, and HbA1c. The NASH-HCC patients exhibited a lower OXY than the NASH patients, probably due to the effects of aging. Conclusion Oxidative stress correlated with the levels of NASH activity markers, while the anti-oxidative function was preserved in younger patients as well as in patients with a well-preserved liver function. The NASH-HCC patients tended to be older and exhibited a diminished anti-oxidative function.

DOI： 10.2169/internalmedicine.56.7002

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：HINDAWI LTD  

Background and Aims. Gastrointestinal surveillance is a requirement prior to liver transplantation (LT), but small intestine examination is not generally undertaken. The aim of the present studywas to evaluate the safety and efficacy of capsule endoscopy (CE) for patients with end-stage liver disease. Methods. 31 patients who needed LT were enrolled, and 139 patients who underwent CE over the same period of time acted as controls. Results. Frequency of successful achievement of evaluation of the full length of the small bowel, the mean gastric transit time, and the mean small bowel transit time were not significantly different between the two groups. Abnormalities in the small bowel were found in 26 patients. Comparative analysis revealed that history of EV rupture, history of EV treatment, red color sign of EV, and presence of PHG or HCC were significantly associated with patients with &gt;2 two such findings (high score group). Conclusions. Small bowel examination by CE in patients before liver transplantation could be performed safely and is justified by the high rate of abnormal lesions detected particularly in patients with history of EV therapy or bleeding, red color sign, and presence of PHG or HCC. This study was registered in the UMIN Clinical Trial Registry (UMIN 000008672).

DOI： 10.1155/2017/8193821

Web of Science

researchmap

記述言語：日本語   出版者・発行元：日本臨床免疫学会  

<p>【背景】生薬であるベルベリン（BBR）は下痢止めとして臨床応用されているが，抗炎症など多彩な作用も有することが明らかになっている．BBRは細胞のエネルギーの調節因子であるAMPKを活性化させることが知られており，近年，このAMPKがT細胞を含む免疫細胞の応答に関わっていることが報告されている．【目的，方法】慢性腸炎マウスモデルを用いて，大腸炎粘膜のCD4⁺T細胞（LP CD4⁺T細胞）におけるBBRの抗炎症作用とその機序についての検証をin vitroおよびIn vivoで行う．1）CD4⁺CD45RB^highT細胞移入腸炎マウスのLPCD4⁺T細胞をPMA/Ionomysinで刺激し，IFN-γ産生細胞を誘導，BBRの効果について，AMPKの関与も含めて検討．2）上記腸炎マウスにBBRを含んだ餌を投与し，腸炎の抑制効果について検討．【結果】1）LP CD4⁺T細胞はBBRと共培養すると，IFN-γ産生細胞が優位に低下し，ウェスタンブロッティングでは，AMPKの活性化を認めた．次に，AMPKのagonistとantagonistを用いた培養系でIFN-γの産生を調べたところ，agonistで抑制，antagonistで増加を認めた．以上から，BBRにより活性化されたAMPKがIFN-γを制御していることが示唆された．2）上記腸炎マウスにBBRを経口投与した結果，腸炎は優位に抑制された．【結論】BBRは，慢性腸炎マウスモデルの腸炎を抑制し，その作用機序の一つとしてAMPKを介した機序が示唆された．</p>

DOI： 10.2177/jsci.40.311b

CiNii Article

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Objective Hepatopulmonary syndrome (HPS) is characterized by vascular dilatation and hyperdynamic circulation, while portopulmonary hypertension (POPH) is characterized by vasoconstriction with fibrous obliteration of the vascular bed. Vasoactive molecules such as nitric oxide (NO) are candidate factors for cirrhotic complications associated with these diseases. However, oxidative stress balance is not well characterized in HPS and POPH. The present objective is to investigate the oxidative stress and anti-oxidative stress balance and NO pathway balance in patients with potential HPS and POPH. Methods We recruited patients with decompensated cirrhosis (n=69) admitted to our hospital as liver transplantation candidates. Patients exhibiting partial pressure of oxygen lower than 80 mmHg and alveolar-arterial oxygen gradient (AaDO2) 15 mmHg were categorized as potentially having HPS (23 of 69 patients). Patients exhibiting a tricuspid regurgitation pressure gradient 25 mmHg were categorized as potentially having POPH (29 of 61 patients). Serum reactive oxygen metabolites were measured and anti-oxidative OXY-adsorbent test (OXY) were performed, and the balance of these tests was defined as the oxidative index. The correlation between these values and the clinical characteristics of the patients were assessed in a cross-sectional study. Results Potential HPS patients exhibited no correlation with oxidative stress markers. Potential POPH patients exhibited lower OXY (p=0.037) and higher oxidative index values (p=0.001). Additionally, the vascular NO synthase enzyme inhibiting protein, asymmetric dimethylarginine, was higher in potential POPH patients (p=0.049). The potential POPH patients exhibited elevated AaDO2, suggesting the presence of pulmonary shunting. Conclusion Potential POPH patients exhibited elevated oxidative stress with decreased anti-oxidative function accompanied by inhibited NO production. Anti-oxidants represent a candidate treatment for potential POPH patients.

DOI： 10.2169/internalmedicine.54.4889

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3892/or.2015.4126

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

The effectiveness of extending treatment duration as response guided therapy was previously reported for chronic hepatitis C (CHC) genotype 1, but is still controversial for genotype 2. The present study is a retrospective cohort study to investigate the effectiveness of extending treatment duration in therapy with pegylated interferon and ribavirin for patients with CHC genotype 2 by focusing on the timing at which patients obtained undetectable HCV RNA. A total of 306 patients who obtained undetectable HCV RNA by week 24 of treatment and completed 24 weeks of treatment were enrolled. Rapid virological response (RVR) to standard therapy was achieved by 122 patients (51%), and 89% of them obtained sustained virological response (SVR), while 69% of non-RVR patients achieved SVR. Non-RVR patients with undetectable HCV RNA at week 8, and insufficient adherence &lt; 80% pegylated interferon and ribavirin during the first 24 weeks, significantly improved their SVR rate by extended therapy. Among patients receiving extended therapy, drug adherences did not differ between SVR and non-SVR patients, indicating that extending treatment duration might compensate for insufficient antiviral effects due to insufficient drug adherences. This finding might be useful in creating a guideline for extending treatment duration for patients with CHC genotype 2.

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：KARGER  

Background/objectives: Diagnosing the invasiveness of intraductal papillary mucinous neoplasms (IPMNs) is difficult, especially by blood test. Alterations in serum glycan profiles have been reported for several cancers, but changes in serum glycan profiles have not been investigated in patients with IPMNs. The objectives of this study were to determine the serum N-glycan profile and to investigate its clinical utility in patients with IPMNs.
Methods: We measured serum N-glycan profiles in 79 patients with IPMNs, including 13 invasive IPMNs, by performing comprehensive glycome analysis and assessed the relationship between N-glycan changes and clinical parameters.
Results: Seventy glycans were identified and their expression profiles were significantly different depending on the cyst size, the presence of an enhancing solid component, and the histological grade of the IPMN. Nine glycans were highly expressed in patients with invasive IPMNs. The glycan m/z 3195, which is a fucosylated tri-antennary glycan, had the highest diagnostic value for distinguishing invasive IPMNs from non-invasive IPMNs (area under the receiver operating characteristic curve = 0.803). Multivariate analyses revealed high levels of m/z 3195 [odds ratio (OR), 20.5; 95% confidence interval (CI) 2.60-486.4] and the presence of enhancing solid components (OR, 35.8; 95% Cl, 5.39-409.6) were significant risk factors for invasive IPMNs.
Conclusions: We performed a comprehensive evaluation of the changes in serum N-glycan profiles in patients with IPMNs for the first time. We determined that increased expression of fucosylated complex-type glycans, especially m/z 3195, is a potential marker for invasive IPMNs. Copyright (C) 2015, IAP and EPC. Published by Elsevier India, a division of Reed Elsevier India Pvt. Ltd. All rights reserved.

DOI： 10.1016/j.pan.2015.05.470

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS  

Objectives: The objectives of this study were to examine the whole serum N-glycan profile of patients with unresectable pancreatic cancer and to evaluate the ability of glycans to predict gemcitabine treatment efficacy and patient survival.
Methods: We collected serum from 52 patients with advanced pancreatic cancer before they began gemcitabine monotherapy. The serum glycan profile was measured through comprehensive quantitative high-throughput glycome analysis and compared with the treatment efficacy and patient survival.
Results: Of the 61 glycans detected, the serum levels of glycan 4310 (molecular weight [m/z] 1549.566), 6301 (m/z 2032.724), and 9200 (m/z 2010.692) were high in patients with a short time to tumor progression (TTP). Multivariate analysis revealed that a high glycan 9200 concentration was an independent risk factor for shorter TTP (hazard ratio, 2.11; 95% confidence interval, 1.07-4.17) and poor overall survival (hazard ratio, 2.56; 95% confidence interval, 1.08-6.19). The median TTP of patients with up-regulation of 9200 after gemcitabine treatment was shorter than for the remaining patients (91 vs 301 days; P = 0.0005). A similar relationship was observed for overall survival (median, 181 vs 561 days; P = 0.001).
Conclusions: Glycan 9200 is a possible biomarker predicting gemcitabine efficacy survival in patients with unresectable pancreatic cancer.

DOI： 10.1097/MPA.0000000000000321

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

It has been reported that elderly patients with chronic hepatitis C infection cannot tolerate standard combination therapy. In this randomized, controlled trial, the efficacy and safety of peginterferon alpha-2b plus a low and escalating dose of ribavirin in chronic hepatitis C patients with high viral load genotype 1 were investigated. Sixty-two patients were randomized into combination therapy with standard ribavirin dosing (group 1) or low and escalating ribavirin dosing (group 2). Patients were evaluated for safety and efficacy of treatment. There was no significant difference in the prevalence of virological response between the groups throughout the treatment as well as 24 weeks after treatment. However, the response in patients 60 years of age was higher in group 1 than in group 2 at early treatment phase (P=0.015). The prevalence of completion of therapy in patients 60 years of age tended to be higher in group 2 than in group 1 (50% vs. 0%, P=0.055). There was no significant difference in dose modification of peginterferon alpha-2b between the groups. However, dose modification of ribavirin was significantly more frequent in group 1 than in group 2 (60% vs. 24%, P=0.005). These data suggest that combination therapy with low and escalating dosing of ribavirin may be safer in elderly patients than that with standard dosing of ribavirin without impairing the treatment response. J. Med. Virol. 87:625-633, 2015. (c) 2015 Wiley Periodicals, Inc.

DOI： 10.1002/jmv.24097

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：3  

DOI： 10.1111/jgh.12726

PubMed

researchmap

記述言語：英語   出版者・発行元：Okayama University Medical School  

We conducted a retrospective cohort study to investigate the predisposing factors for local recurrence and complications after percutaneous radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC). HCC patients (n＝397) consecutively treated with RFA (256 males, 141 females, median age 69 years) were enrolled. In these patients, 1,455 nodules (median size 17mm) were ablated. Predisposing factors for overall recurrence and local recurrence in the context of tumor location and complications were examined. Local recurrence was observed for 113 of the 1,455 nodules. The 1-, 3- and 5-year local recurrence rates were 2.2ｵ, 7.4ｵ and 9.5ｵ, respectively. A multivariate Cox proportional hazard analysis revealed that large tumor size (＞2cm), tumor location (adjacent to the major portal branch or hepatic vein), and small ablated margin (＜3mm) were independent predisposing factors for local recurrence after RFA (HR＝1.70-2.81). Tumor location (adjacent to the major portal branch, hepatic vein, or diaphragm) was also revealed as a risk factor for liver damage due to RFA. HCC adjacent to the major portal vein or hepatic vein was associated with a higher risk for local recurrence and for complications;therefore, special precautions are necessary when applying RFA to HCC near vessels even when the tumors are located at an easy-to-puncture site.

DOI： 10.18926/AMO/53558

PubMed

CiNii Article

CiNii Books

researchmap

その他リンク： http://search.jamas.or.jp/link/ui/2016215092

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Baishideng Publishing Group Co  

AIM: To investigate factors that accurately predict hepatocellular carcinoma (HCC) development after antiviral therapy in chronic hepatitis C (CHC) patients. METHODS: CHC patients who received pegylated interferon and ribavirin were enrolled in this cohort study that investigated the ability of alpha-fetoprotein (AFP) to predict HCC development after interferon (IFN) therapy. RESULTS: Of 1255 patients enrolled, 665 developed sustained virological response (SVR) during mean follow-up period of 5.4 years. HCC was occurred in 89 patients, and 20 SVR patients were included. Proportional hazard models showed that HCC occurred in SVR patients showing AFP ≥ 5ng/mL before therapy and in non-SVR patients showing AFP ≥ 5ng/mL before and 1year after therapy besides older age, and low platelet counts. SVR patients showing AFP ≥ 5ng/mL before therapy and no decrease in AFP to &lt
5ng/mL 1year after therapy had significantly higher HCC incidence than non-SVR patients showing AFP ≥ 5ng/ mL before therapy and decreased AFP (P = 0.043). AFP ≥ 5ng/mL before therapy was significantly associated with low platelet counts and high values of alanine aminotransferase (ALT) in stepwise logistic regression analysis. After age, gender, platelet count, and ALT was matched by propensity score, significantly lower HCC incidence was shown in SVR patients showing AFP &lt
5ng/mL before therapy than in those showing AFP ≥ 5ng/mL. CONCLUSION: The criteria of AFP &lt
5ng/mL before and 1year after IFN therapy is a benefical predictor for HCC development in CHC patients.

DOI： 10.4254/wjh.v7.i19.2220

Scopus

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Polycythemia vera (PV) is a chronic myeloproliferative neoplasm that leads to hyperviscosity and the risk of thrombosis. We encountered the case of a young male Filipino patient diagnosed with PV after the rupture of esophageal varices. The complete blood cell count showed a slight increase in white blood cells. An abdominal computed tomography scan disclosed splenomegaly and occlusion of the portal vein and collateral vessels. A blood examination demonstrated an increase in all three blood cell lines within three months. Based on the presence of severe hypercellularity of the bone marrow and positivity for the JAK2V617F mutation, we finally diagnosed the patient with PV.

DOI： 10.2169/internalmedicine.54.4687

PubMed

researchmap

記述言語：英語   出版者・発行元：ELSEVIER MASSON  

DOI： 10.1016/j.clinre.2013.11.005

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PUBLIC LIBRARY SCIENCE  

Non-alcoholic steatohepatitis (NASH) is a severe form of non-alcoholic fatty liver disease characterized by lobular inflammation, hepatocellular ballooning, and fibrosis with an inherent risk for progression to cirrhosis and hepatocellular carcinoma (HCC). Mitochondrial dysfunction appears to play a role in the progression from simple steatosis to NASH. L-carnitine (L-b-hydroxy-g-N-trimethylaminobutyric acid), an essential nutrient that converts fat into energy in mitochondria, has been shown to ameliorate liver damage. The aim of the present study was to explore the preventive and therapeutic effect of L-carnitine in NASH model mice. Eight-week-old male STAM mice, a NASH-cirrhosis-hepatocarcinogenic model, were divided into 3 experimental groups and fed as follows: 1) high-fat diet (HFD) (control group); 2) HFD mixed with 0.28% L-carnitine (L-carnitine group); and 3) HFD mixed with 0.01% alpha-tocopherol (alpha-tocopherol group). After 4 or 8 weeks, mice were sacrificed. Blood samples and livers were collected, and hepatic tumors were counted and measured. Livers were subjected to histological study, immunohistochemical staining of 4-hydroxynonenal and ferritin, determination of 8-OHdG levels, mRNA and protein expressions for multiple genes, and metabolomic analysis. The intestinal microbiome was also analyzed. L-carnitine increased hepatic expression of genes related to long-chain fatty acid transport, mitochondrial beta-oxidation, and antioxidant enzymes following suppression of hepatic oxidative stress markers and inflammatory cytokines in NASH, and mice treated with L-carnitine developed fewer liver tumors. Although alpha-tocopherol resulted in NASH improvement in the same manner as L-carnitine, it increased periodontitis-related microbiotic changes and hepatic iron transport-related gene expression and led to less effective for anti-hepatocarcinogenesis. Conclusion: L-carnitine prevents progression of non-alcoholic steatohepatitis in a mouse model by upregulating the mitochondrial beta-oxidation and redox system.

DOI： 10.1371/journal.pone.0100627

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

The impact of hepatic steatosis on interferon therapy for patients with chronic hepatitis C (CHC) has been associated with single-nucleotide polymorphisms (SNP) of IL28B, patatin-like phospholipase domain-containing protein 3 (PNPLA3), and low-density lipoprotein (LDL) receptor. Whether this holds true for Japanese patients, however, remains unresolved. The present study prospectively enrolled 226 Japanese patients with CHC, and investigated the impact of hepatic steatosis and its related SNPs, including rs8099917 of IL28B, rs738409 of PNPLA3, and rs14158 of LDL receptor, on outcomes of peg-interferon and ribavirin therapy. In multivariate logistic regression analysis, significant factors affecting the severity of hepatic steatosis were high body mass index and the minor alleles of IL28B SNP (p = 0.020 and 0.039, respectively). The risk alleles of PNPLA3 SNP also showed weak association (p = 0.059). Severe steatosis and the minor alleles of IL28B SNP were significantly associated with null or partial virological response in patients with HCV genotype 1, as were female gender, and low LDL cholesterol (p = 0.049, and &lt;0.001, respectively). The SNP genotype of PNPLA3 and LDL receptor did not have a significant impact on therapeutic outcomes. With respect to the SNP sites examined, the SNP of PNPLA3 has a weak association with severe hepatic steatosis, but not with the outcome of interferon therapy.

DOI： 10.18926/AMO/52139

Web of Science

PubMed

researchmap

記述言語：英語   出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS  

DOI： 10.1097/MCG.0b013e3182a39116

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Background and AimRecently, the association of the dysfunction of programmed cell death (PD)-1 expressed on activated lymphocytes with the pathogenesis of autoimmune hepatitis (AIH) has been speculated. This study aimed to investigate the association of serum anti-PD-1 antibodies with clinical characteristics of type 1 AIH.
MethodsSerum samples before the initiation of prednisolone treatment were obtained from 52 type 1 AIH patients, 24 patients with drug-induced liver injury (DILI), 30 patients with acute viral hepatitis (AVH), 11 patients with primary sclerosing cholangitis (PSC), and 62 healthy volunteers. Titers of serum anti-PD-1 antibodies were measured by indirect enzyme-linked immunosorbent assay. The cutoff level was represented by a mean absorbance+2 standard deviations in healthy volunteers.
ResultsPrevalence of serum anti-PD-1 antibodies was 63% in type 1 AIH patients, 8% in DILI patients, 13% in AVH patients, 18% in PSC patients, and 3% in healthy volunteers. In type 1 AIH patients, titers of serum anti-PD-1 antibodies were correlated with serum levels of bilirubin (r=0.31, P=0.030) and alanine aminotransferase (r=0.31, P=0.027) but not serum immunoglobulin G levels. Positivity for serum anti-PD-1 antibodies was associated with the later normalization of serum alanine aminotransferase levels after the initiation of prednisolone and the disease relapse.
ConclusionsSerum anti-PD-1 antibodies would be useful for the discrimination of type 1 AIH from DILI, AVH, and PSC as an auxiliary diagnostic marker. Furthermore, anti-PD-1 antibodies may be associated with clinical characteristics of type 1 AIH.

DOI： 10.1111/jgh.12340

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1186/2193-1801-2-251

PubMed

researchmap

記述言語：日本語   出版者・発行元：日本消化器免疫学会  

抑制性の補助刺激分子programmed cell death-1(PD-1)に対する血清中抗体価を間接ELISA法で測定した。抗PD-1抗体価は、薬物性肝障害(DILI)群や急性ウイルス性肝炎群、健常者群に比べて自己免疫性肝炎(AIH)群で高値であった。また、AIH群では、抗PD-1抗体価とビリルビンやトランスアミナーゼが正に相関しており、抗PD-1抗体陽性例では陰性例に比べて抗核抗体の陽性率が高かった。血清中抗PD-1抗体は、AIHとDILIの鑑別に有用であり、AIHの病態に関与している可能性が推測される。(著者抄録)

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s00535-011-0508-5

Scopus

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本内科学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

Purpose The combination of hepatitis B immunoglobulin (HBIg) and nucleos(t)ide analogues has been accepted as the best treatment to control hepatitis B recurrence after orthotopic liver transplantation (OLT). However, the optimal dose of HBIg remains unclear. We have previously reported that high-dose HBIg in the early period followed by low-dose HBIg with nucleos(t)ide analogues offers reliable and cost-effective control of hepatitis B recurrence. The aim of this study was to investigate intrahepatic hepatitis B virus (HBV) reinfection status with our clinically successful protocol.
Methods We quantified levels of intrahepatic HBV covalently closed circular (ccc) deoxyribonucleic acid (DNA) and serum hepatitis B core-related antigen (HBcrAg), a new serological marker that can estimate intrahepatic cccDNA levels. Nucleos(t)ide analogues were administered in all cases.
Results No patients showed recurrence of hepatitis B surface antigen (HBsAg) or HBV-DNA. However, HBV, cccDNA, and HBcrAg were positive in 57% and 48% of patients after OLT, respectively. Pre-OLT serum HBV-DNA and HBcrAg levels correlated linearly with post-OLT cccDNA levels (r = 0.534, P &lt; 0.05, and r = 0.634, P &lt; 0.05, respectively). High serum HBV-DNA and HBcrAg levels, particularly with &gt; 3 log(10) copies/mL and &gt; 4 log(10) IU/mL, respectively, at the time of OLT, were associated with high levels of post-OLT cccDNA. Even with our successful protocol, nearly half of patients showed HBV reinfection.
Conclusions Patients with high serum HBV-DNA and HBcrAg levels before OLT (particularly &gt; 3 log(10) copies/mL and &gt; 4 log(10) IU/mL, respectively) should be followed with care for HBV recurrence.

DOI： 10.1007/s12072-011-9265-z

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Background and Aim: Sorafenib, the first agent demonstrated to have efficacy to improve the survival of patients with advanced hepatocellular carcinoma (HCC), is an active multikinase inhibitor affecting angiogenesis and tumor proliferation. We analyzed cytokines related to angiogenesis or cell proliferation, and tried to determine their utility as biomarkers of sorafenib treatment effect for HCC.
Methods: Nine serum cytokines (angiopoietin-2 [Ang-2], follistatin, granulocyte colony-stimulating factor [G-CSF], hepatocyte growth factor [HGF], interleukin-8 [IL-8], leptin, platelet-derived growth factor-BB, platelet endothelial cell adhesion molecule-1, and vascular endothelial growth factor) were measured in 30 HCC patients treated with sorafenib, and the effects of treatment were compared using modified Response Evaluation Criteria in Solid Tumors.
Results: All but IL-8 were significantly higher at baseline in patients with progressive disease. Progression-free survival was significantly shorter in patients with high levels of Ang-2, G-CSF, HGF, and leptin, and the hazard ratios were 2.51, 6.89, 2.55, and 4.14, respectively. As the number of cytokines at a high level increased, the treatment response deteriorated. Disease progression was seen in three of 12 (25.0%) patients with zero to two high biomarkers, two of six (33.3%) patients with 3-5 high biomarkers, and 10 of 12 (83.3%) patients with six to eight high biomarkers (P = 0.008). The prognosis of all patients with eight high biomarkers was progressive disease.
Conclusion: High levels of serum cytokines at baseline were correlated with poor effects of sorafenib treatment in patients with HCC.

DOI： 10.1111/j.1440-1746.2011.06887.x

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Aim: Periodontitis induces overproduction of reactive oxygen species (ROS). This state increases circulating ROS levels and may affect hepatocellular carcinoma (HCC). The Japan Integrated Stage (JIS) score is a novel staging system for HCC. The objective of the present study was to compare JIS scores in HCC patients with and without periodontitis.
Material and Methods: We recruited 64 HCC patients comprising 31 chronic periodontitis subjects (HCC + P) and 33 periodontally healthy controls (HCC + H). Their JIS scores were recorded. Serum levels of reactive oxygen metabolites (ROM) from HCC + P, HCC + H and healthy age-and gender-matched subjects with healthy gingiva (control, n = 15) were also assessed for circulating ROS levels.
Results: The HCC + P and HCC + H groups had similar body mass index, habitual drinking and tobacco exposure data. The HCC + P group showed higher JIS scores than the HCC + H group (p = 0.027). Both the HCC + P and HCC + H groups had higher serum levels of ROM than controls (p &lt; 0.001), while serum levels of ROM in the HCC + P group were a further 25.8% higher than those in the HCC + H group (p &lt; 0.001).
Conclusion: HCC patients with periodontitis had higher JIS score and circulating ROS level than HCC patients without periodontitis.

DOI： 10.1111/j.1600-051X.2011.01777.x

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BIOMED CENTRAL LTD  

Background: Hepatitis B virus (HBV) is a major cause of hepatocarcinogenesis. To identify mutations relevant to hepatocellular carcinoma (HCC) development, we compared the full genome sequences of HBV from the sera of patients with and without HCC.
Methods: We compared the full genome sequences of HBV isolates from 37 HCC patients (HCC group 1) and 38 patients without HCC (non-HCC group 1). We also investigated part of the core promoter region sequences from 40 HCC patients (HCC group 2) and 68 patients without HCC. Of the 68 patients who initially did not have HCC, 52 patients remained HCC-free during the follow-up period (non-HCC group 2), and 16 patients eventually developed HCC (pre-HCC group 2). Serum samples collected from patients were subjected to PCR, and the HBV DNA was directly sequenced.
Results: All patients had genotype C. A comparison of the nucleotide sequences of the HBV genome between HCC group 1 and non-HCC group 1 revealed that the prevalence of G1613A and C1653T mutations in the core promoter region was significantly higher in the HCC group. These mutations tended to occur simultaneously in HCC patients. Multivariate analysis with group 2 revealed that the presence of HCC was associated with aging and the double mutation. Future emergence of HCC was associated with aging and the presence of a single G1613A mutation.
Conclusions: G1613A and C1653T double mutations were frequently found in patients with HCC. A single G1613A mutation was associated with future emergence of HCC. These mutations may serve as useful markers in predicting HCC development.

DOI： 10.1186/1471-2407-11-458

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

The HCC + P and HCC + H groups had similar body mass index, habitual drinking and tobacco exposure data. The HCC + P group showed higher JIS scores than the HCC + H group (p = 0.027). Both the HCC + P and HCC + H groups had higher serum levels of ROM than controls (p &lt; 0.001), while serum levels of ROM in the HCC + P group were a further 25.8% higher than those in the HCC + H group (p &lt; 0.001).

DOI： 10.1111/j.1600-051X.2011.01777.x

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Background and Aim: Ursodeoxycholic acid (UDCA) has been widely used in the treatment of patients with primary biliary cirrhosis (PBC). However, some patients are refractory to UDCA. The aim of this study is to clarify the additive improvement induced by bezafibrate in patients refractory to UDCA.
Methods: This study was a prospective analysis of 37 consecutive PBC patients. All patients were treated first for 6 months with UDCA, and then with bezafibrate, if their alkaline phosphatase (ALP) levels did not decrease more than 40% or within the normal range after 6 months&apos; treatment with UDCA. Clinical parameters were monitored for the subsequent 24 months.
Result: Twenty-two patients (59%) achieved improvement of ALP levels after the treatment with UDCA. Those patients (Group A) had significantly lower levels of ALP at diagnosis than those with abnormal ALP levels after 6 months&apos; treatment with UDCA (Group B; P = 0.020). They continued UDCA monotherapy, and maintained normal ALP levels at subsequent follow ups. However, immunoglobulin M (IgM) levels remained abnormal in eight patients, whose IgM levels at the time of diagnosis were significantly higher than those whose IgM were normalized after 6 months&apos; treatment with UDCA (P = 0.026). Those in Group B were treated additionally with bezafibrate, and 12 patients (80%) achieved normalALP and IgM levels within 12 months of commencement of therapy.
Conclusion: Higher ALP level at diagnosis is one of the predictors for UDCA failure. Combination treatment of bezafibrate in addition to UDCA may be an effective treatment for PBC patients refractory to UDCA.

DOI： 10.1111/j.1440-1746.2011.06737.x

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本臨床免疫学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Background and Aim: Fucosylated alpha-fetoprotein (AFP-L3) is known to be a marker of poor prognosis in patients with hepatocellular carcinoma (HCC). However, it has been difficult to measure AFP-L3 under low AFP (&lt;= 20 ng/mL). The aim of this study was to elucidate the role of AFP-L3 in HCC patients with low AFP conditions.
Methods: One hundred and ninety six consecutive newly developed HCC patients with low AFP (&lt;= 20 ng/mL) were examined for serum AFP-L3 expression by a newly-developed micro-total analysis system that could stably measure AFP-L3 in low AFP circumstances, and its clinical importance was analyzed.
Results: Positivity of AFP-L3 in HCC patients was 13.3% at a cut-off level of 10%. Five-year survivals of HCC patients with AFP-L3 (&lt; 10%) and AFP-L3 (&gt;= 10%) were 69.4% and 41.1%, respectively (P = 0.001). Among 18 clinical parameters, low alanine aminotransferase, large tumor size, presence of portal vein tumor thrombus, high AFP and high des-gamma carboxy prothrombin were observed in the high AFP-L3 (&gt;= 10%) group. Multivariate analysis revealed that high aspartate aminotransferase (AST) (risk ratio [RR] = 3.24, 95% confidence interval [Cl] = 1.27-8.26), the presence of ascites (RR = 3.44, 95% Cl = 1.22-9.34), multiple tumor number (RR = 3.06, 95% CI = 1.33-7.17), and high AFP-L3 (RR = 8.36, 95% Cl = 2.79-25.5) were risk factors for survival. High AFP-L3 was also a risk factor for survival in HCC patients who received radiofrequency ablation (P = 0.048).
Conclusions: AFP-L3 is a strong prognostic factor for survival even in HCC patients with low AFP (&lt;= 20 ng/mL).

DOI： 10.1111/j.1440-1746.2011.06720.x

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Aim:
We conducted this prospective study to elucidate the long-term outcome and incidence of hepatocellular carcinoma (HCC) development after nucleos(t)ide analog (NA) treatment in patients with chronic hepatitis B (CHB) or cirrhosis.
Methods:
CHB or cirrhosis patients without past NA treatment or HCC were started on entecavir (ETV) or lamivudine (LVD), and prospectively followed up with monthly blood tests, and with abdominal imaging every 6 months in CHB and every 3 months in cirrhosis patients.
Results:
A total of 256 subjects with CHB (n = 194) or cirrhosis (n = 62) received ETV (n = 129) or LVD (n = 127) for 4.25 years (range: 0.41-10.0). After NA treatment, serum HBV DNA, alanine aminotransferase and alpha-fetoprotein (AFP) dropped significantly, along with significant increases in serum albumin and prothrombin time. Drug-resistance developed in 60 cases in the LVD group and in only one case in the ETV group. HCC developed in 35 patients, and the incidence at years 1, 3, 5, 7 and 10 was significantly higher in patients with cirrhosis (8.1%, 17.5%, 43.2%, 46.7% and 53.4%, respectively) than chronic hepatitis (1.6%, 3.5%, 3.5%, 7.1% and 29.6%, respectively), with no difference between ETV and LVD. After NA treatment, the sensitivity/specificity for HCC of AFP and des-gamma-carboxy prothrombin (DCP) was 45.7%/97.3% and 33.3%/96.2%, respectively, with the specificity of AFP being higher than at baseline (64.4%), at the cut-off of 10 ng/mL.
Conclusion:
NA exerted a long-term efficacy and improved hepatic reservation in CHB and cirrhosis. After NA treatment, AFP dropped to lower than 10 ng/mL with marked elevation of specificity, leading to an earlier detection of HCC.

DOI： 10.1111/j.1872-034X.2011.00785.x

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Congenital hepatic fibrosis (CHF) and bile duct hamartomas (von Meyenburg complexes) are hepatobiliary fibropolycystic diseases. There have been several reports of liver neoplasias arising in hepatobiliary fibropolycystic diseases. However, most of them were cholangiocarcinomas and cases involving hepatocellular carcinoma (HCC) are rare. A 51-year-old woman was found to have multiple hepatic tumors by ultrasonography and enhanced computed tomography (CT) during a regular work-up for the recurrence of lung cancer and thyroid cancer, which had been surgically removed 4 and 3 years ago, respectively. Nodules were observed at S3, S5, and S6 (2 cm in diameter). All of the nodules were hyperattenuated at the early arterial phase, and the main tumor at S5 showed hypoattenuation at the delayed phase on dynamic CT and magnetic resonance imaging (MRI). HCC was suspected from these findings. She also suffered from multiple small cystic lesions in the liver. The surgically removed liver showed HCC arising in CHF, which is a rare histological finding.

DOI： 10.1111/j.1872-034X.2010.00761.x

Web of Science

PubMed

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Aim:
Recently, the associations of +49A/G polymorphisms of cytotoxic T-lymphocyte antigen 4 (CTLA-4) gene with the susceptibility to type 1 autoimmune hepatitis (AIH) and primary biliary cirrhosis (PBC) have been reported; however these associations are yet to be fully elucidated. This study aimed to identify the associations of CTLA-4 gene +49A/G polymorphisms with the susceptibility to type 1 AIH and PBC by using a meta-analysis.
Methods:
PubMed was searched by using the following keywords: "autoimmune hepatitis AND (polymorphism OR polymorphisms)" or "primary biliary cirrhosis AND (polymorphism OR polymorphisms)". Meta-analyses of five studies including 526 patients with type 1 AIH and 631 controls and seven studies including 1500 patients with PBC and 2345 controls were performed.
Results:
For type 1 AIH, the odds ratio (OR) of G allele was 1.26 [95% confidence interval (CI) 1.06-1.51] although G/G homozygosity was not associated with the susceptibility to type 1 AIH. On the other hand, the OR of A/A homozygosity for type 1 AIH was 0.66 (95% CI 0.50-0.86). For PBC, the OR of G allele was 1.20 (95% CI 1.06-1.34). Furthermore, G/G homozygosity was significantly associated with the susceptibility to PBC (OR 1.29, 95% CI 1.01-1.66). The OR of A/A homozygosity for PBC was 0.81 (95% CI 0.70-0.94).
Conclusions:
This study suggests that CTLA-4 gene +49A/G polymorphisms may be associated with the susceptibility to type 1 AIH and PBC. Especially, while G/G genotype may be associated with the susceptibility to PBC, A/A genotype may be protective against type 1 AIH and PBC.

DOI： 10.1111/j.1872-034X.2010.00757.x

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18926/AMO/43825

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC  

Background and Aims:
In animal models for acute liver injury, the administration of some angiogenic factors such as vascular endothelial growth factor (VEGF) and granulocyte-colony stimulating factor (G-CSF) are shown to reduce liver injury and improve liver proliferative capacity. The aim of the present study was to assess the role of angiogenic factors in fulminant hepatic failure (FHF).
Methods:
Serum levels of nine angiogenic factors (angiopoietin-2, follistatin, G-CSF, hepatocyte growth factor [HGF], interleukin-8, leptin, platelet-derived growth factor [PDGF]-BB, platelet endothelial cell adhesion molecule-1 and VEGF) were measured using the Bio-Plex Protein Array System in 30 patients, 17 of whom were diagnosed with FHF, 13 with acute hepatitis (AH), and 20 controls.
Results:
Serum levels of PDGF-BB and VEGF were lower in FHF patients than AH patients and controls (PDGF-BB; 2050 +/- 1572 pg/mL vs 4521 +/- 2419 pg/mL vs 8506 +/- 5500 pg/mL, VEGF; 39 +/- 38 pg/mL vs 144 +/- 122 pg/mL vs 205 +/- 121 pg/mL). By using univariate logistic regression models, serum levels of PDGF-BB and VEGF were associated with poor outcomes. Serum PDGF-BB levels were strongly correlated with serum VEGF levels (r = 0.70). Furthermore, serum PDGF-BB levels were significantly correlated with platelet counts (r = 0.79), PT activity (r = 0.37) and D.Bil/T.Bil ratio (r = 0.50), while serum VEGF levels were significantly correlated with platelet counts (r = 0.68) and PT activity (r = 0.38).
Conclusions:
We consider that serum levels of PDGF-BB and VEGF are worth investigating as biomarkers for predicting outcomes of FHF patients.

DOI： 10.1111/j.1440-1746.2010.06441.x

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BIOMED CENTRAL LTD  

Background: Runt-related transcription factor 3 (RUNX3) is known as a tumor suppressor gene for gastric cancer and other cancers, this gene may be involved in the development of hepatocellular carcinoma (HCC).
Methods: RUNX3 expression was analyzed by immunoblot and immunohistochemistry in HCC cells and tissues, respectively. Hep3B cells, lacking endogenous RUNX3, were introduced with RUNX3 constructs. Cell proliferation was measured using the MTT assay and apoptosis was evaluated using DAPI staining. Apoptosis signaling was assessed by immunoblot analysis.
Results: RUNX3 protein expression was frequently inactivated in the HCC cell lines (91%) and tissues (90%). RUNX3 expression inhibited 90 +/- 8% of cell growth at 72 h in serum starved Hep3B cells. Forty-eight hour serum starvation-induced apoptosis and the percentage of apoptotic cells reached 31 +/- 4% and 4 +/- 1% in RUNX3-expressing Hep3B and control cells, respectively. Apoptotic activity was increased by Bim expression and caspase-3 and caspase-9 activation.
Conclusion: RUNX3 expression enhanced serum starvation-induced apoptosis in HCC cell lines. RUNX3 is deleted or weakly expressed in HCC, which leads to tumorigenesis by escaping apoptosis.

DOI： 10.1186/1471-2407-11-3

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：24  

DOI： 10.1182/blood-2010-06-289231

Scopus

PubMed

researchmap

その他リンク： http://orcid.org/0000-0003-1761-6314

記述言語：英語  

For patients with chronic hepatitis due to hepatitis B virus (HBV), factors predicting hepatocellular carcinoma (HCC) other than high levels of HBV-DNA and alanine aminotransferase (ALT) are needed to prevent HCC development, as many patients with chronic HBV infection fulfill these conditions. The purpose of this study was to clarify factors predictive of HCC development for those patients. The study was a systematic cohort analysis of 303 consecutive patients with hepatitis B e-antigen, receiving laparoscopic examination for assessment of liver disease. Laparoscopic, histological, and clinical characteristics were investigated as related to HCC development. HCC occurred in 27 patients during a mean follow-up of 8.0 +/- A 5.0 years, at the age of 37-72 years. Significant associations with HCC development were shown for liver cirrhosis, histological activity grade, reddish markings, and older age. Multivariate analysis revealed that HCC development was strongly associated with older age and male gender (P = 0.002 and P = 0.043, respectively). HCC occurred more frequently in patients of age a parts per thousand yen30 years even with early stage than in patients of age < 30 years (P = 0.031). Severe reddish markings, a laparoscopic finding of widespread parenchymal destruction, were highly associated with HCC development in patients of age a parts per thousand yen30 years at diagnosis (odds ratio = 1.67, P = 0.034), while histological activity grade and ALT level were not (P = 0.075 and P = 0.69, respectively). HCC development is associated with older age, male gender, and liver cirrhosis. Reddish markings, rather than histological activity or ALT level, can be useful to predict HCC for HBV patients of age a parts per thousand yen30 years.

DOI： 10.1007/s00535-010-0266-9

PubMed

CiNii Article

CiNii Books

researchmap

DOI： 10.1111/j.1478-3231.2010.02299.x

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

Dendritic cells (DCs) in chronic hepatitis C patients display impaired function, although the details remain unclear. To investigate the hepatitis C virus (HCV) protein that has the most impact on DC function, we compared five recombinant proteins and seven HCV protein genes in modulating DC phenotype and function. Immature DCs (iDCs) were established from healthy donor peripheral blood monocytes with granulocyte-macrophage colony stimulating factor (GM-CSF) and IL-4. Lipopolysaccharide was used to establish mature DCs (mDCs). Cells were then pulsed with HCV recombinant proteins or transfected with HCV plasmids and subsequently assayed for cell surface marker expression by flow cytometry. For cytokine and proliferative T-cell response analysis, DCs were cultured with autologous CD4 T cells and tuberculin purified protein derivative (PPD). Mean fluorescent intensity of CD86 was reduced in HCV protein-pulsed iDCs. Proliferative T-cell responses and Th1 cytokine concentrations were reduced with HCV nonstructural proteins (NS), particularly with HCV NS4. HCV nonstructural proteins, particularly NS4, change the iDC phenotype and reduce antigen-specific T-cell stimulatory function with Th1 cytokine reductions.

DOI： 10.1111/j.1365-2893.2009.01213.x

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC  

Various clinical studies have indicated that interferon (IFN)-alpha treatment prevents the development of hepatocellular carcinoma (HCC) in people chronically infected with hepatitis C virus. However, it has been controversial whether IFN-alpha treatment prevents HCC recurrence. The aim of this study was to identify the preventive effect of IFN-alpha treatment after curative therapy of primary tumours within the Milan criteria (three or fewer nodules 3 cm or less in diameter or a single nodule of 5 cm or less) on HCC recurrence. We conducted a meta-analysis of five trials including 355 patients (167 patients received IFN-alpha treatment after curative therapy of primary tumours) and estimated relative risks (RRs) and 95% confidence intervals (CIs) for the effect of IFN-alpha on HCC recurrence according to the DerSimonian and Laird method. IFN-alpha treatment after curative therapy of primary tumours significantly prevented HCC recurrence (RR 0.33; 95%CI 0.19-0.58, P &lt; 0.0001) without a significant heterogeneity (Q = 4.52, P = 0.34). An evaluation using the Begg method suggested no evidence of publication bias. Sub-group analyses revealed that IFN-alpha treatment reduced HCC recurrence in two studies achieving sustained virologic response (SVR) rates &gt; 30% (RR 0.20; 95%CI 0.05-0.81, P = 0.02) and in three studies achieving SVR rates &lt; 30% (RR 0.44; 95%CI 0.23-0.84, P = 0.01). In conclusion, IFN-alpha treatment after curative treatment of primary tumour within Milan criteria may be effective for the prevention of HCC recurrence, and higher SVR rate may be associated with better preventive effect of IFN-alpha treatment on HCC recurrence.

DOI： 10.1111/j.1365-2893.2009.01181.x

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE INC  

Background: Recently, simplified diagnostic criteria for autoimmune hepatitis have been proposed. Aim: We aimed to evaluate usefulness of the simplified criteria.
Methods: We applied the simplified criteria to 176 autoimmune hepatitis patients diagnosed according to the revised scoring system proposed in 1999 (original criteria). Furthermore, in order to compare predictabilities between these two diagnostic criteria, we included 168 patients with other liver disease than autoimmune hepatitis.
Results: Of 176 autoimmune hepatitis patients, 85% were diagnosed with autoimmune hepatitis according to the simplified criteria, and patients diagnosed according to the simplified criteria showed a higher frequency of antinuclear antibodies and/or smooth muscle antibodies of 1:80 or greater and slightly higher serum levels Of immunoglobulin G than those diagnosed according to the original criteria. However, 30% of male patients, 23% of patients with acute presentation, 50% of patients showing histological acute hepatitis and 46% of patients negative for antinuclear antibodies at presentation were not diagnosed with autoimmune hepatitis according to the simplified criteria. The simplified criteria showed lower sensitivity (85% vs. 100%) and higher specificity (99% vs. 93%) for autoimmune hepatitis than the original criteria.
Conclusions: The simplified criteria may be useless for the diagnosis of patients with atypical features, especially patients with histological acute hepatitis. (C) 2009 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.dld.2009.06.013

Web of Science

researchmap

DOI： 10.1111/j.1365-2036.2009.04179.x

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE INC  

Background: In Caucasians with autoimmune hepatitis, patients with acute presentation have autoimmune thyroiditis and histological zone 3 necrosis more frequently.
Aim: We aimed at investigating clinical features of Japanese autoimmune hepatitis patients with acute presentation.
Methods: Of 176 patients retrospectively reviewed, 53 were diagnosed with acute presentation.
Results: Patients with acute presentation had higher serum levels of bilirubin and transaminase, lower frequencies of autoimmune thyroiditis and antinuclear antibodies of 1:160 or greater, and a higher frequency of zone 3 necrosis. Of the 53 patients with acute presentation, 10 showed histological acute hepatitis; however, advanced staging of fibrosis was found in 13 patients. In patients with acute presentation, those with histological acute hepatitis were younger than those with chronic hepatitis. The cumulative incidental rate of the normalization of serum alanine aminotransferase levels with prednisolone treatment was similar between patients with acute presentation and those with classical presentation.
Conclusions: In line with previous results, zone 3 necrosis is a histological characteristic of autoimmune hepatitis with acute presentation. Autoimmune hepatitis with acute presentation includes not only histological acute hepatitis but also acute exacerbation of pre-existing chronic disease. On the other hand, Japanese patients with acute presentation may also have different clinical features from Caucasian patients. (C) 2009 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.dld.2009.04.009

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：JAPAN SOC INTERNAL MEDICINE  

An 18-year-old Nepalese man was admitted due to general malaise and anorexia a month after coming to Japan. Laboratory tests showed elevation of transaminase and positivity for IgM anti-HEV antibody. Serum HEV RNA was detected by RT-PCR amplifications. An HEV genome phylogenetic tree, constructed using an 821-nucleotide sequence in the open reading frame 1, indicated that the genotype was 1. HEV genotype 1 is epidemic in South Asia, Africa and South America, and the incidence of acute hepatitis due to HEV genotype 1 is low in Japan. Thereafter, attention should be paid to HEV genotype 1 infection as an imported infectious disease.

DOI： 10.2169/internalmedicine.49.4221

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

This study aimed to investigate the efficacy of ursodeoxycholic acid (UDCA) for Japanese patients with autoimmune hepatitis (AIH).
One hundred forty-seven patients were investigated.
As initial treatment, 25 patients received UDCA (300-600 mg/day) monotherapy (UDCA group), 40 received a combination of prednisolone (PSL) (a parts per thousand yen20 mg/day) and UDCA (combination group), 68 received PSL monotherapy (PSL group), and 14 received other treatments. During the follow-up, in the UDCA group, PSL was added to 8 of 12 patients failing to achieve the normalization of serum transaminase levels with UDCA monotherapy. Cumulative incidence of the normalization of serum transaminase levels was 64% in the UDCA group, 95% in the combination group, and 94% in the PSL group (log-rank test, P = 0.0001). UDCA group required longest periods until the normalization of serum transaminase levels. Eleven patients, who achieved persistent normalization of serum transaminase levels with UDCA monotherapy, did not reach liver failure or develop hepatocellular carcinoma for 49.7 (range = 13.4-137.3) months. Meanwhile, during the taper of PSL, doses of PSL at the initial relapse were lower in patients treated with PSL and UDCA than in those treated with PSL monotherapy, and initial relapse occurred earlier in patients treated with PSL monotherapy.
UDCA monotherapy is effective for some Japanese AIH patients; however, UDCA monotherapy for patients with either high-grade inflammatory activity or poor residual capacity of liver function is not recommended because they may reach liver failure before achievement of remission. Meanwhile, additional use of UDCA during the taper of corticosteroids may be effective for the prevention of early relapse.

DOI： 10.1007/s12072-009-9155-9

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC  

Aim:
The peak age of the presentation of autoimmune hepatitis (AIH) is between 40 years and 50 years. Elderly patients have been reported to have higher frequencies of concurrent thyroid or rheumatic diseases and histological cirrhosis and a lower occurrence of treatment failure. In this study, we assessed the clinical features of Japanese type 1 AIH in adolescence and early adulthood.
Methods:
Fifteen patients aged &lt; 30 years (group 1) were compared with 79 patients aged between 40 years and 50 years (group 2).
Results:
At presentation, patients aged &lt; 30 years accounted for 9% of the study population. Although frequencies of extrahepatic concurrent autoimmune diseases were similar between groups 1 and 2, a tendency toward a lower frequency of concurrent autoimmune thyroiditis was shown in group 1 (0 vs. 18%, P = 0.08). Group 1 had a lower frequency of human leukocyte antigen DR4 (27 vs. 78%, P = 0.002), and histological acute hepatitis was shown more frequently in group 1 (27 vs. 4%, P = 0.002). However, there were no differences in frequencies of the normalization of serum transaminase levels after the introduction of corticosteroid treatment or relapse after the normalization of serum transaminase levels between the two groups.
Conclusions:
Japanese type 1 AIH patients in adolescence and early adulthood respond well to corticosteroid treatment. However, they may frequently show atypical features, and the diagnosis of type 1 AIH in adolescence and early adulthood may be difficult and should be made carefully.

DOI： 10.1111/j.1872-034X.2009.00510.x

Web of Science

researchmap

記述言語：英語  

Background: Twist, a transcription factor of the basic helix-loop-helix class, is reported to regulate cancer metastasis. It is known to induce epithelial-mesenchymal transition (EMT). In this study, we evaluated the expression of twist and its effect on cell migration in hepatocellular carcinoma (HCC). Methods: We examined twist expression using immunohistochemistry in 20 tissue samples of hepatocellular carcinoma, and assessed twist expression in HCC cell lines by RT-PCR and Western blot analysis. Ectopic twist expression was created by introducing a twist construct in the twist-negative HCC cell lines. Endogenous twist expression was blocked by twist siRNA in the twist-positive HCC cell lines. We studied EMT related markers, E-cadherin, Vimentin, and N-cadherin by Western blot analysis. Cell proliferation was measured by MTT assay, and cell migration was measured by in vitro wound healing assay. We used immunofluorescent vinculin staining to visualize focal adhesion. Results: We detected strong and intermediate twist expression in 7 of 20 tumor samples, and no significant twist expression was found in the tumor-free resection margins. In addition, we detected twist expression in HLE, HLF, and SK-Hep1 cells, but not in PLC/RPF/5, HepG2, and Huh7 cells. Ectopic twist-expressing cells demonstrated enhanced cell motility, but twist expression did not affect cell proliferation. Twist expression induced epithelial-mesenchymal transition together with related morphologic changes. Focal adhesion contact was reduced significantly in ectopic twist-expressing cells. Twist-siRNA-treated HLE, HLF, and SK-Hep1 cells demonstrated a reduction in cell migration by 50, 40 and 18%, respectively. Conclusion: Twist induces migratory effect on hepatocellular carcinoma by causing epithelial-mesenchymal transition.

DOI： 10.1186/1471-2407-9-240

PubMed

CiNii Article

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC  

Antinuclear antibodies (ANA) are the main serologic markers of type 1 autoimmune hepatitis (AIH); however 20-30% of patients are negative for ANA. We assessed the clinical features of ANA-negative patients.
A retrospective analysis was performed of 176 patients with type 1 AIH (153 females, median age 55 years). A diagnosis of AIH was made based on the revised scoring system proposed by the International Autoimmune Hepatitis Group. ANA titers were measured using a standard indirect immunofluorescence technique.
Thirty-eight patients (22%) had low titers of ANA (1:40 or 1:80), and 114 (65%) had high titers (&gt;= 1:160). Of 24 ANA-negative patients, 15 were positive for smooth muscle antibodies (SMA). Three of nine both ANA- and SMA-negative patients developed ANA during follow-up. The other six were diagnosed based on histological characteristics. Thirteen ANA-negative patients relapsed after the normalization of serum alanine aminotransferase (ALT) levels. ANA-negative patients more frequently showed acute presentation and, at presentation, had lower serum immunoglobulin G levels, higher serum levels of bilirubin and transaminase, and higher frequencies of histological acute hepatitis and zone 3 necrosis than those with high titers. However, the frequency of advanced stage of fibrosis was similar. The response to corticosteroids was not different among the three groups.
ANA-negative type 1 AIH shows acute-onset more frequently but may include not only acute autoimmune hepatitis, but also acute exacerbation of inactive chronic disease. Regarding the diagnosis of ANA-negative AIH, the determination of ANA during follow-up and the response to immunosuppressive treatment may be helpful.

DOI： 10.1111/j.1872-034X.2008.00454.x

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS  

Background and Aims: Living-donor liver transplantation (LDLT) has been widely performed in patients with end-stage liver disease and hepatocellular carcinoma in Japan. Although extrahepatic cancer survey for LDLT candidates is absolutely required. few reports have indicated the optimal surveillance method for colorectal cancer. The aim Of this study is to investigate the feasibility and findings of colonoscopy before LDLT.
Patients and Methods: Front January 2004 to August 2006. we prospectively, enrolled all of the scheduled LDLT candidates of our hospital for pretransplant colonoscopy examination.
Results: A total of 81 patients were enrolled For colonoscopy. Of these patients. 67 (83%) could actually undergo colonoscopy. Patients who could bot undergo colonoscopy exhibited more impaired liver Function than those who Could (median Model End-State Liver Disease,core: 25.5 vs. 14.5. P = 0.0003). Among patients who underwent colonoscopy. observation of total colon was attained in 64 (96%). Neoplasia was found in 28 ,,) patients, including 4 patients with adenomas &gt;= 10 mm, 1 patient with adenomas with high-grade dysplasia. and 3 patients with invasive cancer. Patients who had advanced neoplasia (adenoma &gt;= 10 mm. adenomas with high-grade dysplasia. or invasive cancer) were likely to have a lower performance status (PS) (7/8 were PS 3) than those who did not (P = 0.054).
Conclusions: Clinically, significant tumors were found in a considerable portion Of LDLT candidates. particularly in lower PS patients. Because immunosuppressive agents after transplantation may worsen malignant tumors. colonoscopy before transplantation is recommended in patients who can tolerate the procedure.

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.molonc.2008.06.004

Web of Science

PubMed

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BLACKWELL PUBLISHING  

Aim: Human leukocyte antigen (HLA) DR status affects the clinical features of autoimmune hepatitis. In Caucasians, patients with DR3 have poorer outcomes. In Japan, the relationship between HLA DR status and clinical features has yet to be fully examined.
Methods: We investigated 79 patients with type 1 autoimmune hepatitis who underwent liver biopsy and were screened for HLA DR status by the polymerase chain reaction sequence specific oligonucleotide hybridization method.
Results: Fifty-five patients had DR4 and 23 had DR2. Thirteen patients had both DR2 and DR4. None had DR3. Of patients aged &lt; 30 years, 70% did not have DR4. A tendency toward higher serum levels of immunoglobulin G was seen in patients with DR4 compared to those without, while patients with neither DR2 nor DR4 had lower serum levels of immunoglobulin G than those with only DR2 and those with only DR4. Patients with DR2 had a lower frequency of concurrentautoimmune disease. Concurrence of thyroid disease was seen only in patients with DR4. The cumulative incidental rate of the normalization of serum alanine aminotransferase levels within six months after the introduction of corticosteroid treatment was not associated with HLA DR status.
Conclusion: HLA DR status is considered to affect the clinical features of Japanese patients with type 1 autoimmune hepatitis. Japanese patients with DR2 may have different clinical features from others. In addition, diagnoses of type 1 autoimmune hepatitis should be made carefully in Japanese patients with neither DR2 nor DR4 and in those aged &lt; 30 years.

DOI： 10.1111/j.1872-034X.2007.00204.x

Web of Science

researchmap

記述言語：日本語   出版者・発行元：The Japanese Society for Dialysis Therapy  

糖尿病性腎症の保存期腎不全の期間と透析導入時の臨床像, 腎不全進行に関与した因子について検討した. 糖尿病性腎症による末期腎不全で当院で血液透析導入となった58症例 (男性36例, 女性22例, 平均年齢62.8±10.6歳) について, 血清クレアチニン値2.0mg/dLの時点から透析導入までの期間が2年未満のA群と2年以上のB群とに分け, 臨床的に比較検討した. A群はB群に比し約10歳平均年齢が低く, 有意に尿蛋白量が多く, 血清アルブミン値が低く, 腎サイズが保たれていた. 一方, B群は脳梗塞の合併率が高かった. また, 重回帰分析で, 保存期腎不全の期間は, 高年齢と腎長径が小さいことと正の相関を示した. これらよりA群は細小血管症である糖尿病性糸球体硬化症が, また, B群では大血管症である腎硬化症が主に関与した病態と考えられた. 個々の症例における保存期腎不全の期間は, これら2つの病態の関与の程度の違いを反映しているものと考えられる. 高齢者の糖尿病透析患者が増加している近年, 腎硬化症が糖尿病性腎症の進行に大きな影響を与えている.

DOI： 10.4009/jsdt.38.1385

CiNii Article

researchmap

記述言語：日本語   出版者・発行元：Japanese Society of Nephrology  

A 52-year-old man was admitted to our hospital because of nephrotic syndrome. He had been monitored at our outpatient clinic for chronic hepatitis B, and had experienced histologically proven minimal change nephrotic syndrome at the ages of 40 and 51 years. Because of HBsAg positivity in his serum, steroid therapy was withheld in his earlier episodes and he recovered from nephrotic syndrome spontaneously. However, in the most recent episode the nephrotic syndrome was found difficult to control and the findings of renal biopsy showed FSGS, which is not expected in HBV-associated nephropathy. Finally, prednisolone was administered at the dose of 40 mg/day for four weeks, after which the dose was tapered. LDL apheresis was also administered three times because of the patient's incomplete response to prednisolone. His proteinuria was reduced from>10 g/day to<1 g/day, but the ALT levels and HBsAg titer increased. With stronger neominophagen C induction and very careful tapering of glucocorticoid, ALT levels and the HBsAg titer decreased. During the two-year period since the induction of glucocor ticoid therapy, urinary protein excretion has been maintained at less than 1 g/gcr, and ALT levels and HBsAg titer have not increased. We conclude that attention must be paid to dose modification of steroid therapy and strategies without immunosuppressive agents such as LDL apheresis should be considered in the case of treatment of nephrotic syndrome with HB virus.

DOI： 10.14842/jpnjnephrol1959.44.806

PubMed

CiNii Article

researchmap

掲載種別：研究論文（学術雑誌）  

researchmap

掲載種別：研究論文（学術雑誌）  

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-四国支部  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

J-GLOBAL

researchmap

記述言語：日本語  

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

J-GLOBAL

researchmap

記述言語：日本語   出版者・発行元：(株)メディカルレビュー社  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：日本消化器病学会-中国支部  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(株)メディカルレビュー社  

researchmap

記述言語：英語   出版者・発行元：Springer Tokyo  

Background: Once-daily, orally administered, co-formulated glecaprevir (NS3/4A protease inhibitor) and pibrentasvir (NS5A inhibitor) (G/P) demonstrated pangenotypic activity and high sustained virologic response (SVR) rates in studies outside Japan. Here we report safety and efficacy in a subset of Japanese patients with chronic HCV infection who received G/P 300/120 mg in a phase 3, open-label, multicenter study (CERTAIN-1). Methods: This analysis focuses on three difficult-to-treat subgroups: HCV GT1/2-infected patients who failed to achieve SVR after treatment with a direct acting antiviral (DAA)-containing regimen
GT1/2-infected patients with severe renal impairment (estimated glomerular filtration rate &lt
 30 mL/min/1.73 m2)
and GT3-infected patients. Patients in the renal impairment and GT3 cohorts were treatment-naive or interferon treatment-experienced. Noncirrhotic GT1/2-infected, DAA-naïve patients in the renal impairment cohort received G/P for 8 weeks
all other patients were treated for 12 weeks. Primary outcome was SVR (HCV RNA &lt
 15 IU/mL) 12 weeks post-treatment (SVR12). Results: The study enrolled 33 GT1/2-infected patients who failed previous DAA treatment (four with cirrhosis)
12 GT1/2-infected patients with severe renal impairment (two with cirrhosis)
and 12 GT3-infected patients (two with cirrhosis). SVR12 was achieved by 31/33 (93.9%), 12/12 (100%), and 10/12 (83.3%) patients, respectively. One serious adverse event (fluid overload, not related to G/P) occurred in a patient on chronic intermittent hemodialysis. Conclusions: G/P achieved high SVR12 rates and was well tolerated in three difficult-to-treat patient subgroups with limited treatment options in Japan (DAA-experienced patients, patients with severe renal impairment, and GT3-infected patients). These results support the potential suitability of this regimen for these special populations in Japan.

DOI： 10.1007/s00535-017-1396-0

Scopus

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(公社)日本超音波医学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   出版者・発行元：BMJ PUBLISHING GROUP  

Aims Although liver biopsy is crucial to diagnose and guide treatment decisions, a detailed histological analysis of autoimmune hepatitis (AIH) with clinically acute presentations has not yet been performed. This study aimed to characterise the histological features and explore potential histological hallmarks to diagnose the acute presentation of AIH.
Methods We systematically evaluated liver specimens of 87 adult patients with acute presentation of AIH retrospectively enrolled from Japanese multicentre facilities. Each histological feature was predefined by consensus based on the diagnostic criteria.
Results Key findings were that acute presentation of AIH revealed histological features of both acute hepatitis and chronic hepatitis accompanying various degrees of fibrosis. The prominent features were lobular necrosis/ inflammation (97.7%), plasma cell infiltration (96.4%), emperipolesis (89.3%), pigmented macrophages (84.5%), cobblestone appearance of hepatocytes (82.6%) and perivenular necroinflammatory activity, including centrilobular necrosis (81.4%).
Conclusions The acute presentation of AIH represents the entire histological spectrum of acute hepatitis and chronic hepatitis with various activity grades and fibrosis stages that clinically correspond to acute-onset AIH and acute exacerbation of classic AIH, respectively. Although there are no pathognomonic features for the pathological diagnosis, the prominent presence of lobular and perivenular necroinflammatory activity, pigmented macrophages and cobblestone appearance of hepatocytes in addition to the classic AIH features, such as plasma cell infiltration and emperipolesis, are useful for the pathological diagnosis of the acute presentation of AIH.

DOI： 10.1136/jclinpath-2016-204271

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

Determining the indications for and timing of liver transplantation (LT) for acute liver failure (ALF) is essential. The King's College Hospital (KCH) guidelines and Japanese guidelines are used to predict the need for LT and the outcomes in ALF. These guidelines' accuracy when applied to ALF in different regional and etiological backgrounds may differ. Here we compared the accuracy of new (2010) Japanese guidelines that use a simple scoring system with the 1996 Japanese guidelines and the KCH criteria for living donor liver transplantation (LDLT). We retrospectively analyzed 24 adult ALF patients (18 acute type, 6 sub-acute type) who underwent LDLT in 1998-2009 at our institution. We assessed the accuracies of the 3 guidelines' criteria for ALF. The overall 1-year survival rate was 87.5%. The new and previous Japanese guidelines were superior to the KCH criteria for accurately predicting LT for acute-type ALF (72% vs. 17%). The new Japanese guidelines could identify 13 acute-type ALF patients for LT, based on the timing of encephalopathy onset. Using the previous Japanese guidelines, although the same 13 acute-type ALF patients (72%) had indications for LT, only 4 patients were indicated at the 1st step, and it took an additional 5 days to decide the indication at the 2nd step in the other 9 cases. Our findings showed that the new Japanese guidelines can predict the indications for LT and provide a reliable alternative to the previous Japanese and KCH guidelines.

Web of Science

researchmap

記述言語：英語   出版者・発行元：WILEY  

Background and Aim: Reduced expression in immortalized cells (REIC)/dickkopf-3 (Dkk-3) is a tumor suppressor gene that is downregulated in various cancers. In our previous study of prostate cancer, the REIC/Dkk-3-expressing adenoviral vector (Ad-REIC) was found to induce cancer-selective apoptosis. This study recently developed a novel super gene expression (SGE) system and used this system to re-construct an Ad-REIC vector, termed the Ad-SGE-REIC, to achieve more effective therapeutic outcomes. In this study, the therapeutic effects of Ad-SGE-REIC on hepatocellular carcinoma (HCC) was assessed.
Methods: Human HCC cell lines (HLE, Huh7, HepG2, HLF, SK-Hep1, and PLC), human HCC tissues, and mouse HCC cell line (Hepa1-6) were used in this study. REIC/Dkk-3 expression was assessed by immunoblotting and immunohistochemistry. The relative cell viability and the apoptotic effect were examined in vitro, and the anti-tumor effects of Ad-SGE-REIC treatment were analyzed in the mouse xenograft model. This study additionally assessed anti-tumor immunological effects on the immunocompetent mice.
Results: REIC/Dkk-3 expression was decreased in HCC cell lines and HCC tissues. Ad-SGE-REIC reduced cell viability and induced apoptosis in HCC cell lines (HLE and Huh7), inhibited tumor growth in the mouse xenograft model, and demonstrated in vivo anti-cancer immunostimulatory effects on the HCC cell line (Hepa1-6).
Conclusions: Ad-SGE-REIC treatment not only enhanced cell killing effects in vitro but also elicited significant therapeutic effects, with tumor growth suppression, in vivo. REIC/Dkk-3 gene therapy using Ad-SGE-REIC potentially represents an innovative new therapeutic tool for HCC.

DOI： 10.1111/jgh.13757

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：WILEY  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：WILEY  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：日本語   出版者・発行元：南江堂  

CiNii Article

CiNii Books

researchmap

その他リンク： http://search.jamas.or.jp/link/ui/2017264380

記述言語：英語   出版者・発行元：SPRINGER JAPAN KK  

A nationwide survey of autoimmune hepatitis (AIH) patients was performed in Japan in 2015. The aims of this study were to elucidate the trends and characteristics of AIH in Japan, in addition to identifying differences in AIH between acute hepatitis and chronic hepatitis.
Questionnaires about patients with AIH diagnosed from 2009 to 2013 were sent to 437 hospitals or clinics with hepatology specialists.
A total of 1682 patients were enrolled. The mean age at diagnosis was 60.0 years, and 87.1 % of patients were female. Serum immunoglobulin G levels were high, peaking at 1.5-2.0 g/dL. Histological diagnoses of chronic hepatitis, acute hepatitis, and cirrhosis were seen in 79.6, 11.7, and 6.7 % of patients respectively. In addition to elevation of aminotransferase levels, the frequencies of emperipolesis and human leukocyte antigen (HLA)-DR2 positivity were higher in patients with acute hepatitis than in those with chronic hepatitis. Approximately 80 % of patients were treated with corticosteroids, and in 97.7 % of them, their condition improved. Steroid pulse therapy was more frequently given to patients with acute hepatitis than to those with chronic hepatitis.
In the present nationwide survey of AIH patients in Japan, patients with acute hepatitis had clinical features different from those of patients with chronic hepatitis.

DOI： 10.1007/s00535-016-1267-0

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：AMER SOC CLINICAL ONCOLOGY  

DOI： 10.1200/JCO.2017.35.15_suppl.e15674

Web of Science

researchmap

記述言語：英語   出版者・発行元：WILEY  

Background and Aim Pathological grading is important in defining the therapeutic strategy in pancreatic neuroendocrine neoplasm (PNEN) but is difficult for unresectable cases. Endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) is useful in the diagnosis of PNEN, but its usefulness for pathological grading is not well established. No studies have examined the diagnostic ability of dynamic computed tomography (CT) for pathological grading of PNEN. We investigated the usefulness of EUS-FNA and dynamic CT in the diagnosis and pathological grading of PNEN.
Methods In this retrospective study, 39 PNEN patients finally diagnosed via EUS-FNA and/or surgical resection underwent dynamic CT. Pathological samples were diagnosed based on WHO2010; staging was based on the European Neuroendocrine Tumor Society classification. The proportion of the quantification value in the tumor to the pancreatic parenchyma in arterial phase was defined as the CT ratio. Immunohistochemical staining with CD31 was performed to evaluate microvessel density (MVD). We evaluated the relationship between pathological grade, CT ratio, and MVD.
Results By using EUS-FNA, 35 of 39 (90%) cases were diagnosed as PNEN. As for pathological grade, 15 of 35 (43%) cases could be identified correctly. CT ratio could predict pathological Grade 3 disease. The sensitivity, specificity, and diagnostic accuracy were 100%, 94%, and 95%. MVD was significantly correlated with CT ratio (r=0.83, P&lt;0.0001) and pathological grade (P=0.0074).
Conclusions Computed tomography ratio has a relationship with pathological grade in PNEN, which would help decide therapeutic strategy in unresectable cases and cases in which pathological grading is difficult.

DOI： 10.1111/jgh.13594

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(公社)日本超音波医学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

0

DOI： 10.1016/S0016-5085(17)33922-7

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   出版者・発行元：WILEY  

Background and Aim: Transcatheter arterial chemoembolization (TACE) is a standard therapy for the treatment of intermediate-stage hepatocellular carcinoma (HCC). In this study, we tried to elucidate the possibility of using radiofrequency ablation (RFA) as an alternative treatment of intermediate-stage HCC.
Methods: Among 246 patients who were initially diagnosed with intermediate-stage HCC, 76 who were treated with TACE (TACE group) and 91 who were treated with RFA (RFA group) were enrolled in this study. The risk for survival was analyzed with the Cox Proportional Hazard Model, and the survival rates were compared using propensity score matching.
Results: About half (50.6%) of the intermediate-stage HCC patients in the RFA group were diagnosed with Barcelona Clinic Liver Cancer substage-B1 (BCLC-B1) compared with only 19.7% of the patients in the TACE group. Survival of the RFA group was longer than that of TACE group in patients with BCLC-B1 and BCLC-B2. In contrast, no difference between groups was observed in patients with BCLC-B3/4. Multivariate analysis revealed that large tumor size (&gt; 30 mm, hazard ratio = 1.685, P = 0.043), high des-gamma-carboxyprothrombin (&gt; 100 mAU/mL, hazard ratio = 1.920, P = 0.012), and TACE group (hazard ratio = 1.896, P = 0.016) were significant risk factors for survival. Overall 3-year survival of the patients in the RFA group (69.5%) was significantly longer than that of patients in the TACE group (51.5%) after propensity score matching (P = 0.032). No significant adverse events were observed in either group.
Conclusions: RFA was useful for the treatment of less advanced intermediate-stage HCC and could be an alternative to TACE in selected cases.

DOI： 10.1111/jgh.13586

Web of Science

researchmap

記述言語：英語   出版者・発行元：INT SCIENTIFIC LITERATURE, INC  

Background: Human leukocyte antigen (HLA) mismatch is a characteristic feature of post-orthotopic liver transplantation (OLT) hepatitis C. To investigate the importance of donor HLA-restricted immune cells in post-OLT hepatitis C recurrence, we analyzed the frequency of donor chimerism and the clinical course of post-OLT hepatitis C.
Material/Methods: We analyzed peripheral blood chimerism in 11 HCV-reinfected patients with post-HLA mismatched OLT. Patients were divided into 2 groups: the OLT chronic hepatitis C (CHC) group (n=8), exhibiting active hepatitis C recurrence; and the OLT-persistently normal ALT (PNALT) group (n=3), without active hepatitis. Chimerism was analyzed by flow cytometry using donor-specific anti-HLA antibodies in peripheral blood mononuclear cells from 1-100 days after OLT. Kidney (n=7) and lung (n=7) transplant recipients were also analyzed for comparison. As immune cells from the donor liver might contribute to post-OLT chimerism, the characteristics of perfusates from donor livers (n=10) were analyzed and defined.
Results: Donor-derived cells were frequently observed in liver and lung transplant recipients. The frequency of donor-derived cells from the B cell subset was significantly higher in peripheral blood from OLT-CHC group than in that of the OLT-PNALT group. B cells, however, were not the predominant subset in the perfusates, indicating that inflow of donor-derived cells alone did not cause the chimerism.
Conclusions: Chimerism of B cells is frequent in liver transplant patients with early recurrence of hepatitis C. We propose that monitoring of early chimerism could facilitate early detection of chronic hepatitis C recurrence, although we need more cases to investigate.

DOI： 10.12659/AOT.900494

Web of Science

researchmap

記述言語：英語   出版者・発行元：SPANDIDOS PUBL LTD  

DOI： 10.3892/or.2017.5419

Web of Science

researchmap

記述言語：英語   出版者・発行元：SPRINGER  

The molecular pathogenesis of non-alcoholic steatohepatitis (NASH) is not well defined. The objective of the present study was to identify disease progression-related cytokines and investigate the molecular pathogenesis of such changes in NASH.
A study population of 20 non-alcoholic fatty liver (NAFL) and 59 NASH patients diagnosed by liver biopsy and 15 healthy volunteers was recruited. The serum pro- and anti-inflammatory cytokines were measured by a multiple enzyme-linked immunosorbent assay. The hepatic mRNA expressions of cytokines were measured by real-time PCR. A monocyte cell line was stimulated with Toll-like receptor (TLR) ligand under a high glucose and insulin condition, and cellular cytokine mRNA expression was quantified.
One group of cytokines was higher in NAFL and NASH than in controls, while another group was higher in NASH than in NAFL and controls. The NASH-specific second group included interleukin (IL)-15 and interferon-gamma-inducible protein (IP)-10. In particular, IP-10 was higher in NAFL than in controls and higher in NASH than in NAFL and controls. The sensitivity to diagnose NASH was 90%, with specificity of 50%. Insulin resistance reflecting a high glucose and insulin condition resulted in higher IP-10 mRNA expression in the monocyte cell line only with concomitant TLR-2 stimulation.
IP-10 is a sensitive marker of the need for liver biopsy. Insulin resistance with bacteria-related TLR-2 stimulation might induce IP-10 production from monocytes. Insulin resistance and intestinal barrier function should be intensively controlled to prevent progression from NAFL to NASH.

DOI： 10.1007/s12072-016-9773-y

Web of Science

researchmap

記述言語：英語   出版者・発行元：WILEY-BLACKWELL  

Background and AimVideo-capsule endoscopy (VCE) has shown that intestinal ulcers are common in non-steroidal anti-inflammatory drugs (NSAIDs) users, although the mechanisms and management have not been clearly defined. To explore the contribution of oxidative stress and potential of anti-oxidants for NSAIDs-induced intestinal ulcers, we assessed human serum oxidative stress balance and the effect of anti-oxidants using a mouse model.
MethodsA total of 30 NSAIDs users (17 aspirin and 13 non-aspirin users) received VCE. Serum reactive oxygen metabolite (d-ROM) and antioxidative OXY-adsorbent test (OXY) were measured. The indomethacin (IND)-induced mouse intestinal ulcer model was used to assess the effect of anti-oxidants. Eight-week-old mice were divided into four groups; control diet and diet including IND (N group), IND and L-carnitine (NC group), and IND and vitamin E (NE group).
ResultsSerum OXY levels among non-aspirin users were lower in the mucosal injuries positive group than the negative group (P&lt;0.05). In the mouse models, the degree of mucosal injuries was lower in NC and NE than N (P&lt;0.01). Serum d-ROM levels were lower in NC and NE than N (P&lt;0.01), and OXY levels were higher in NC than N and NE (P&lt;0.01). The degeneration of intestinal mitochondria was mild in NC and NE. The serum KC/CXCL-1 level and hepatic expression of the anti-oxidant molecule Gpx4 were lower in NC than N.
ConclusionsNon-aspirin NSAID-induced intestinal ulcers are related to decreased anti-oxidative stress function. Anti-oxidants, especially L-carnitine, are good candidates for intestinal ulcers.

DOI： 10.1111/jgh.13424

Web of Science

researchmap

記述言語：日本語   出版者・発行元：Japan Society of Hepatology  

Alert for positive results of hepatitis tests in electronic medical chart is helpful for management of hepatitis carriers at non-hepatology departments. Further attempts for sufficient hepatological consultations in this alert system, such as explaining the test results to the subjects by mailing notification forms with referral to the hepatologists were adopted. The notification forms were re-mailed to the subjects without the reply in 6 months. Aggregate analysis by reviewing the charts of the subjects confirmed that the rate of hepatological consultation was improved from 49% to 72% with further attempts (p&lt
0.001, the chi-square test). Mailing notification forms with referral to the hepatologists can be helpful for facilitating hepatological consultation in alert system of positive test results for HBV and HCV infection in electronic medical chart.

DOI： 10.2957/kanzo.58.427

Scopus

researchmap

DOI： 10.1007/s00535-017-1409-z

researchmap

DOI： 10.2957/kanzo.58.304

researchmap

記述言語：英語   出版者・発行元：JAPAN SOC INTERNAL MEDICINE  

A 46-year-old woman presented with massive hematemesis, caused by the rupture of esophageal varices. The laboratory investigations showed pancytopenia, and imaging tests revealed hepatosplenomegaly and ascites. A diagnosis of systemic sarcoidosis was made based on biopsies of the liver, stomach, lungs, heart, and skin. Although fat deposition was predominant, non-caseating granuloma and cirrhotic changes were found in the liver. Non-caseating granuloma was also identified in a biopsy specimen from minute depressions of the gastric folds. This case illustrates the rare involvement of the digestive system in a case of systemic sarcoidosis.

DOI： 10.2169/internalmedicine.8768-16

Web of Science

researchmap

記述言語：日本語   出版者・発行元：Japan Society of Hepatology  

The efficacy and safety of anti-hepatitis C virus (HCV. direct-acting antivirals were evaluated in postorthotopic liver transplantation patients. There were 29 patients with HCV genotype 1 and 2 with genotype 2. Of the 29 genotype 1 patients, 5 received daclatasvir (DCV. + asunaprevir (ASV), and 25 received sofosbuvir (SOF. + ledipasvir (LDV), including 1 who had failed DCV + ASV. Both genotype 2 patients received SOF + ribavirin. Four patients with DCV + ASV completed the protocol, and 3 of them achieved a sustained viral re-sponse for 24 weeks (SVR24). All of the patients who received SOF + LDV and SOF + RBV achieved SVR24 with minor adverse events. In post-liver transplantation patients, SOF-based regimens showed highly satisfactory efficacy and safety.

DOI： 10.2957/kanzo.58.599

Scopus

researchmap

記述言語：英語   出版者・発行元：HINDAWI LTD  

DOI： 10.1155/2017/6418529

Web of Science

researchmap

記述言語：英語   出版者・発行元：JAPAN SOC INTERNAL MEDICINE  

Objective Oxidative stress is associated with the progression of chronic liver disease. Non-alcoholic fatty liver disease (NAFLD) is also an oxidative stress-related disease. However, the oxidative/anti-oxidative balance has not been fully characterized in NAFLD. The objective of the present study was to investigate the balance between oxidative stress and the anti-oxidative activity in NAFLD, including non-alcoholic steatohepatitis (NASH)-related hepatocellular carcinoma (HCC).
Patients We recruited 69 patients with histologically proven NAFLD without HCC (NAFLD; n=58), and with NASH-related HCC (NASH-HCC; n=11). The 58 NAFLD patients included patients with non-alcoholic fatty liver (NAFL; n=14) and NASH (n=44).
Methods The serum levels of reactive oxygen metabolites (ROM) and anti-oxidative markers (OXY) were determined and then used to calculate the oxidative index. The correlations among such factors as ROM, OXY, oxidative index, and clinical characteristics were investigated.
Results In NAFLD, ROM positively correlated with the body mass index (BMI), hemoglobin A1c (HbA1c), C-reactive protein (CRP), and the histological grade or inflammatory scores, while only high HbA1c and CRP levels were significant factors that correlated with a higher ROM according to a multivariate analysis. OXY positively correlated with the platelet counts, albumin, and creatinine levels, while negatively correlating with age. However, it improved after treatment intervention. The oxidative index positively correlated with BMI, CRP, and HbA1c. The NASH-HCC patients exhibited a lower OXY than the NASH patients, probably due to the effects of aging.
Conclusion Oxidative stress correlated with the levels of NASH activity markers, while the anti-oxidative function was preserved in younger patients as well as in patients with a well-preserved liver function. The NASH-HCC patients tended to be older and exhibited a diminished anti-oxidative function.

DOI： 10.2169/internalmedicine.56.7002

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

症例は50歳代、女性。肝左葉を占める、肝内多発転移・門脈腫瘍塞栓をともなう混合型肝癌と診断された。肝細胞癌成分が有意と判断し、肝細胞癌に準じた化学療法を導入した。Sorafenib・CDDP肝動注療法では病勢と全身状態の悪化を認めたが、Low-dose FP(LFP)療法は奏効を認め、長期生存が得られている。今回LFP療法が、切除不能な混合型肝癌の治療の選択肢としても有効である可能性が示唆された。(著者抄録)

DOI： 10.11405/nisshoshi.113.2050

CiNii Article

researchmap

記述言語：日本語   出版者・発行元：(公社)日本超音波医学会  

researchmap

記述言語：日本語   出版者・発行元：(NPO)日本肺癌学会  

researchmap

記述言語：英語   出版者・発行元：SPANDIDOS PUBL LTD  

Pancreatobiliary tract cancer is a highly fatal cancer. Detection of pancreatobiliary tract cancer is difficult because it lacks typical clinical symptoms and because of its anatomical location. Biomarker discovery is therefore important to detect pancreatobiliary tract cancer in its early stage. A study demonstrated that expression levels of miR-1246, miR-3976, miR-4306, and miR-4644 in serum exosomes were higher in pancreatic cancer patients than these levels in healthy control participants. Supposing that microRNA (miRNA) expression profiles in saliva are similar to those in serum, four miRNAs (miR-1246, miR-3976, miR-4306, and miR-4644) in salivary exosomes may also be useful for detection of pancreatobiliary tract cancer. In this study, it was examined whether these miRNAs could be used as biomarkers for pancreatobiliary tract cancer. Twelve pancreatobiliary tract cancer patients and 13 healthy control participants were analyzed as a cancer and a control group, respectively. Unstimulated whole saliva was collected, salivary exosomes were isolated, and total RNA was extracted. Using quantitative real-time PCR (RT-qPCR), the relative expression ratios of miR-1246 and miR-4644 were significantly higher in the cancer group than these ratios in the control group. Receiver operating characteristic (ROC) curves were constructed to analyze the discrimination power of these miRNAs. For miR-1246, the results yielded an area under the curve (AUC) of 0.814 (P=0.008). For miR-4644, the results yielded an AUC of 0.763 (P=0.026). For the combination of miR-1246 and miR-4644, the results yielded an increased AUC of 0.833 (P=0.005). This pilot study suggests that miR-1246 and miR-4644 in salivary exosomes could be candidate biomarkers for pancreatobiliary tract cancer.

DOI： 10.3892/or.2016.5021

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   出版者・発行元：NATURE PUBLISHING GROUP  

Reduced expression in immortalized cells (REIC)/dickkopf-3 (Dkk-3), a tumor suppressor gene, is downregulated in various cancers. We previously reported the tumor-inhibitory effects of the REIC/Dkk-3 gene, delivered by a conventional adenoviral vector (Ad-CAG-REIC) in pancreatic cancer. Here, we developed an Ad-REIC vector with a novel gene expression system, termed the super gene expression (SGE) system, and assessed its therapeutic effects relative to those of Ad-CAG-REIC in pantreatic cancer cells. Human pancreatic cancer cell lines ASPC1 and MIAPaCa2 were used. REIC/Dkk-3 expression was assessed by western blot analysis. Relative cell viability and apoptotic effects were examined in vitro. The anti-tumor effects of Ad-REIC treatment were assessed in the mouse xenograft model. Compared with Ad-CAG-REIC, Ad-SGE-REIC elicited a significant increase in REIC protein expression in the cells studied, Relative to Ad-CAG-REIC, Ad-SGE-REIC reduced cell viability and induced apoptosis in the ASPC1 and MIAPaCa2 cell lines in vitro, and achieved superior tumor growth inhibition in the mouse xenograft model. Compared with conventional Ad-REIC agents, Ad-SGE-REIC provided enhanced inhibitory effects against tumor growth. Our results indicate that Ad-SGE-REIC is an innovative therapeutic tool for pancreatic cancer.

DOI： 10.1038/cgt.2016.31

Web of Science

researchmap

記述言語：英語   出版者・発行元：WILEY  

AimRecurrence of hepatocellular carcinoma (HCC) is observed frequently, even after curative treatments. The aim of this study is to elucidate the risk factors for recurrence of HCC after radiofrequency ablation (RFA), focusing on the carcinogenic potential of the liver assessed by -fetoprotein (AFP).
MethodsWe enrolled 357 consecutive patients who underwent complete ablation by RFA for primary HCC (3cm, 3 tumors) and analyzed the correlation between 17 critical parameters, including AFP and HCC recurrence.
ResultsRecurrence was observed in 236 patients during a mean observation period of 54.3months. Multivariate analysis revealed that multiple tumors (risk ratio [RR]=1.70, 95% confidence interval [CI]=1.27-2.26, P&lt;0.001), high AFP (&gt;10ng/mL, RR=1.45, 95% CI=1.09-1.94, P&lt;0.001) and high des--carboxyprothrombin (&gt;40 mAU/mL, RR=1.52, 95% CI=1.13-2.02, P&lt;0.005) were significantly correlated with recurrence. AFP was selected as a significant factor even when the cut-off level was set lower (5ng/mL). The risk of recurrence increased linearly according to the increase of the lowest AFP level after RFA and the adjusted ratios relative to AFP less than 5ng/mL were 1.56, 2.14, 2.57 and 3.13 in AFP 5-10ng/mL, 10-20ng/mL, 20-50ng/mL and over 50ng/mL, respectively. In addition, the recurrence rate was predicted by the AFP level after RFA, regardless of the level before the treatment.
ConclusionAFP less than 5ng/mL after curative RFA was an important predictor of a better prognosis and was considered to indicate the low carcinogenic potential of the non-cancerous liver.

DOI： 10.1111/hepr.12636

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

<p>Hepatitis C recurrence after orthotopic liver transplantation (OLT) has been accepted as a major problem after OLT. Recent progress in hepatitis C virus (HCV) treatment with the use of direct acting antivirals (DAA) has almost resolved this major issue, as 95-100% of non-OLT hepatitis C patients in Japan reach a sustained viral response (SVR). However, the SVR rate among post-OLT hepatitis C patients in the United States and Europe is reported to be 90% and 10% of these patients require an additional approach. As the pathogenesis of hepatitis C involves immunological responses, post OLT hepatitis C exhibits complex phenomena with immune regulating agents including prednisolone and calcineurin inhibitors and HLA-mismatch in the recipient immune system and the donor liver. The pathogenesis and the recent progress in post-OLT hepatitis C are described in this chapter.</p>

DOI： 10.11386/jst.51.2-3_092

CiNii Article

researchmap

記述言語：日本語   出版者・発行元：(一社)日本門脈圧亢進症学会  

researchmap

記述言語：英語   出版者・発行元：WILEY-BLACKWELL  

Background and AimReduced expression in immortalized cells/dickkopf-3 (REIC/DKK3) is a reported tumor suppressor gene and has potential to become an innovative therapy for various cancers. We examined the antitumor immunological effects of human REIC/DKK3 protein against pancreatic cancer.
MethodsActivation of extracellular signal-regulated kinases 1 and 2, mammalian target of rapamycin, and signal transducer and activator of transcription 3 by REIC/DKK3 protein was assessed in human peripheral blood mononuclear cells using immunoblotting. Pancreatic cancer cell lines (AsPC-1 and MIA Paca-2) were cocultured with peripheral blood mononuclear cells, and the anticancer effects of REIC/DKK3 protein were assessed using the methyl thiazole tetrazolium, cytotoxicity, and enzyme-linked immunospot assays. The antitumor immunological effects of the combined treatment with REIC/DKK3 protein and peripheral blood mononuclear cells were also assessed in a pancreatic cancer model using non-obese diabetic/severe combined immunodeficiency mice.
ResultsThe REIC/DKK3 protein activated extracellular signal-regulated kinases 1 and 2, mammalian target of rapamycin, and signal transducer and activator of transcription 3 in peripheral blood mononuclear cells. REIC/DKK3 protein inhibited in vitro cancer cell viability and enhanced cytotoxicity when incubated with peripheral blood mononuclear cells. REIC/DKK3 protein induced significant production of interferon gamma from lymphocytes incubated with pancreatic cancer cells, indicating that CD8+ T cells were activated in the peripheral blood mononuclear cells when cocultured with AsPC-1 and MIA Paca-2 in the presence of REIC/DKK3 protein. Combined treatment with REIC/DKK3 protein and peripheral blood mononuclear cells produced in vivo anticancer immunostimulatory effects on pancreatic cancer cells.
ConclusionsThe REIC/DKK3 protein and peripheral blood mononuclear cells synergistically enhanced anticancer immunological effects against pancreatic cancer cells. The observed immunomodulatory effect of combined treatment likely occurs in adenovirus-mediated REIC/DKK3 gene therapy and provides important clues to the therapeutic mechanisms involving immune cells.

DOI： 10.1111/jgh.13259

Web of Science

researchmap

記述言語：英語   出版者・発行元：SPANDIDOS PUBL LTD  

Runt-related transcription factor 3 (RUNX3) is known to function as a tumor suppressor in gastric cancer and other types of cancers, including hepatocellular carcinoma (HCC). However, its role has not been fully elucidated. In the present study, we aimed to evaluate the role of RUNX3 in HCC. We used the human HCC cell lines Hep3B, Huh7 and HLF; RUNX3 cDNA was introduced into Hep3B and Huh7 cells, which were negative for endogenous RUNX3 expression, and RUNX3 siRNA was transfected into HLF cells, which were positive for endogenous RUNX3. We analyzed the expression of RUNX3 and multidrug resistance-associated protein (MRP) by immunoblotting. MTT assays were used to determine the effects of RUNX3 expression on 5-fluorouracil (5-FU) and cisplatin (CDDP) sensitivity. Finally, 23 HCC specimens resected from patients with HCC at Okayama University Hospital were analyzed, and correlations among immunohistochemical expression of RUNX3 protein and MRP protein were evaluated in these specimens. Exogenous RUNX3 expression reduced the expression of MRP1, MRP2, MRP3 and MRP5 in the RUNX3-negative cells, whereas knockdown of RUNX3 in the HLF cells stimulated the expression of these MRPs. An inverse correlation between RUNX3 and MRP expression was observed in the HCC tissues. Importantly, loss of RUNX3 expression contributed to 5-FU and CDDP resistance by inducing MRP expression. These data have important implications in the study of chemotherapy resistance in HCC.

DOI： 10.3892/or.2016.4681

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(公社)日本超音波医学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   出版者・発行元：BMJ PUBLISHING GROUP  

Background Oxidative stress may play pathogenic roles in the mechanisms underlying chronic hepatitis C (CHC). The impact of excessive oxidative stress and iron dysregulation on the development of hepatocellular carcinoma (HCC) after interferon therapy has not been established.
Methods We investigated the impact of oxidative stress and iron deposition on HCC development after therapy with pegylated interferon (PegIFN)+ribavirin in CHC patients. Systemic and intracellular iron homeostasis was evaluated in liver tissues, peripheral blood mononuclear cells and sera.
Results Of 203 patients enrolled, 13 developed HCC during the 5.6-year follow-up. High hepatic 8-hydroxy-2-deoxyguanosine (8-OHdG) levels were significantly associated with HCC development in multivariate analysis (p=0.0012) which was also significantly correlated with severity of hepatic iron deposition before therapy (p&lt;0.0001). Systemic and intracellular iron regulators of hepcidin and F-box and leucine-rich repeat protein 5 (FBXL5) expression levels were significantly suppressed in CHC patients (p=0.0032 and p=0.016, respectively) despite their significantly higher levels of serum iron and ferritin compared with controls. However, intracellular iron regulators of FBXL5 and iron regulatory proteins were regulated in balance with hepatic iron deposition. Significant correlations were observed among IL-6, bone morphogenetic protein 6, hepcidin and ferroportin, as regards systemic iron regulation.
Conclusions Measurement of hepatic oxidative stress before antiviral therapy is useful for the prediction of HCC development after interferon therapy. Low baseline levels of the intracellular iron regulators of FBXL5 in addition to a suppressed hepcidin level might be associated with severe hepatic iron deposition in CHC patients.

DOI： 10.1136/jclinpath-2015-203215

Web of Science

researchmap

記述言語：英語   出版者・発行元：BMJ PUBLISHING GROUP  

Background Oxidative stress may play pathogenic roles in the mechanisms underlying chronic hepatitis C (CHC). The impact of excessive oxidative stress and iron dysregulation on the development of hepatocellular carcinoma (HCC) after interferon therapy has not been established.
Methods We investigated the impact of oxidative stress and iron deposition on HCC development after therapy with pegylated interferon (PegIFN)+ribavirin in CHC patients. Systemic and intracellular iron homeostasis was evaluated in liver tissues, peripheral blood mononuclear cells and sera.
Results Of 203 patients enrolled, 13 developed HCC during the 5.6-year follow-up. High hepatic 8-hydroxy-2-deoxyguanosine (8-OHdG) levels were significantly associated with HCC development in multivariate analysis (p=0.0012) which was also significantly correlated with severity of hepatic iron deposition before therapy (p&lt;0.0001). Systemic and intracellular iron regulators of hepcidin and F-box and leucine-rich repeat protein 5 (FBXL5) expression levels were significantly suppressed in CHC patients (p=0.0032 and p=0.016, respectively) despite their significantly higher levels of serum iron and ferritin compared with controls. However, intracellular iron regulators of FBXL5 and iron regulatory proteins were regulated in balance with hepatic iron deposition. Significant correlations were observed among IL-6, bone morphogenetic protein 6, hepcidin and ferroportin, as regards systemic iron regulation.
Conclusions Measurement of hepatic oxidative stress before antiviral therapy is useful for the prediction of HCC development after interferon therapy. Low baseline levels of the intracellular iron regulators of FBXL5 in addition to a suppressed hepcidin level might be associated with severe hepatic iron deposition in CHC patients.

DOI： 10.1136/jclinpath-2015-203215

Web of Science

researchmap

記述言語：英語   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

Chronic hepatitis B (CHB) leads to cirrhosis and hepatocellular carcinoma (HCC). With a cohort of 1,206 CHB patients who visited Okayama University Hospital and related hospitals in 2011 and 2012, we compared the incidence rates of HCC among the patients grouped by age, hepatitis B virus (HBV) DNA, hepatitis B e antigen (HBeAg), and treatment. HCCs were observed in 115 patients with the median observation period of 1,687 days. Among the HCC patients aged &gt;= 35 years, HBV DNA &gt;= 4 log copies/mL and positive HBeAg at diagnosis (n = 184), the HCC incidence rate was 8.4% at 5 years in the entecavir (ETV)-treated patients, 21.8% in the lamivudine (LVD)-treated patients, and 26.4% among the patients not treated with drugs. The cumulative HCC incidence was significantly reduced in the ETV-treated patients compared to those treated with LVD or not treated (p = 0.013). Among the patients aged &gt;= 35 years with HBV DNA &gt;= 4 log copies/mL and negative HBeAg (n = 237), the cumulative HCC incidence was 14.6% in 5 years in ETV group and 13.9% among those not treated with a drug (p &gt; 0.05). Only small numbers of HCCs occurred in other patients. In CHB patients aged &gt;= 35 years with HBV DNA &gt;= 4 log copies/mL and positive HBeAg, ETV treatment is recommended for the suppression of HCC development.

DOI： 10.18926/AMO/53996

Web of Science

researchmap

記述言語：英語   出版者・発行元：NATURE PUBLISHING GROUP  

Although obesity is undoubtedly major risk for non-alcoholic steatohepatitis (NASH), the presence of lean NASH patients with normal body mass index has been recognized. Here, we report that the insufficiency of phosphatidylethanolamine N-methyltransferase (PEMT) is a risk for the lean NASH. The Pemt-/-mice fed high fat-high sucrose (HFHS) diet were protected from diet-induced obesity and diabetes, while they demonstrated prominent steatohepatitis and developed multiple liver tumors. Pemt exerted inhibitory effects on p53-driven transcription by forming the complex with clathrin heavy chain and p53, and Pemt-/-mice fed HFHS diet demonstrated prominent apoptosis of hepatocytes. Furthermore, hypermethylation and suppressed mRNA expression of F-box protein 31 and hepatocyte nuclear factor 4 alpha resulted in the prominent activation of cyclin D1. PEMT mRNA expression in liver tissues of NASH patients was significantly lower than those with simple steatosis and we postulated the distinct clinical entity of lean NASH with insufficiency of PEMT activities.

DOI： 10.1038/srep21721

Web of Science

researchmap

記述言語：英語   出版者・発行元：INT MEDICAL PRESS LTD  

Background: The efficacy of a direct-acting antiviral agent (DAA) is compromised by the development of drug resistance. The associations between resistance-associated virus (RAV) and therapeutic outcomes have not been well-understood.
Methods: A total of 30 patients with HCV genotype-1b were enrolled and treated for 24 weeks with asunaprevir (ASV) and daclatasvir (DCV). Viral sequences in non-structural (NS) regions 3 and 5A in serum and liver tissue before treatment were examined with direct sequencing, next-generation sequencing (NGS) and the PCR-invader method to evaluate the importance of drug-resistance in the prediction of the outcomes of ASV plus DCV therapy.
Results: Of 30 patients (22 treatment-naive patients, 2 interferon-intolerant patients and 6 non-responders), 25 patients (83.3%) achieved sustained virological response (SVR) 24 weeks after the treatment. Viral breakthrough occurred in three treatment-naive patients and one non-responder. One treatment-naive patient experienced viral relapse. Among 25 patients without RAV, 24 obtained SVR, whereas 5 patients had RAV with a 1.3 to 88% frequency, resulting in various therapeutic outcomes. As for HCV compartments, similar RAVs were detected in serum and liver tissue for a patient obtaining SVR despite HCV NS5A Y93H and another developed viral breakthrough although no RAV was detected. Direct sequencing could not detect RAVs in low frequency (1.3 to 12%) for three of four patients.
Conclusions: Low frequency of RAVs might not affect the outcomes of ASV plus DCV therapy. Deep sequencing and PCR-invader methods can detect clinically significant RAVs for ASV plus DCV therapy.

DOI： 10.3851/IMP2976

Web of Science

researchmap

記述言語：英語   出版者・発行元：TAYLOR & FRANCIS LTD  

Background: Pancreatico-biliary malignancies exhibit similar characteristics, including obesity-related features and poor prognosis, and require new treatment strategies. Oxidative stress is known to induce DNA damage and carcinogenesis, and its reduction is viewed as being favorable. However, it also has anti-infection and anti-cancer functions that need to be maintained. To reveal the effect of oxidative stress on cancer progression, we evaluated oxidative stress and anti-oxidative balance in pancreatic cancer (PC) and cholangiocarcinoma (CC) patients, as well as the effect of add-on antioxidant treatment to chemotherapy in a mouse cholangiocarcinoma model.
Methods: We recruited 84 CC and 80 PC patients who were admitted to our hospital. Serum levels of reactive oxygen metabolites (ROM) and the anti-oxidative OXY-adsorbent test were determined and the balance of these tests was defined as an oxidative index. A diabetic mouse-based cholangiocarcinoma model was utilized to evaluate the effects of add-on antioxidant therapy on cholangiocarcinoma chemotherapy.
Results: Serum ROM was higher and anti-oxidant OXY was lower in CC patients with poor outcomes. These parameters were not significantly different in PC patients. In mice, vitamin E administration induced antioxidant hemeoxygenase (HO)-1 protein expression in cancer tissue, while the number of stem-like cells increased. L-carnitine administration improved intestinal microbiome and biliary acid balance, upregulated the hepatic mitochondrial membrane uptake related gene Cpt1 in non-cancerous tissue, and did not alter stem-like cell numbers.
Conclusion: Oxidative stress balance was dysregulated in cholangiocarcinoma with poor outcome. The mitochondrial function-supporting agent L-carnitine is a good candidate to control oxidative stress conditions.

DOI： 10.3109/10715762.2016.1172071

Web of Science

researchmap

記述言語：日本語   出版者・発行元：Japanese Society of Gastroenterology  

A woman in her 50s was admitted to our hospital because of multiple tumors detected in her liver. She was diagnosed with combined hepatocellular cholangiocarcinoma using gadolinium-ethoxybenzyldiethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and biopsy of the liver tumors. We judged the tumors to be unresectable because they were found in both lobes of the liver, with a tumor thrombus being found in the main left portal vein. The pathological findings showed that the tumors exhibited characteristics of hepatocellular carcinoma Therefore, sorafenib was administered
however, 6 months later, the disease progressed. Consequently, she received second-line chemotherapy with a one-shot intra-arterial injection of cisplatin, but this too was ineffective, and her general condition worsened. As hence, we changed the regimen to 5-fluorouracil continuous infusion and consecutive low dose cisplatin (LFP) therapy. After one cycle of chemotherapy with LFP, Gd-EOB-DTPA-enhanced MRI showed markedly decreased sizes and numbers of tumors. To date, she has completed six cycles of LFP therapy, and almost all her tumors are no longer visible on MRI. She has recovered to a good state and has achieved long-term survival. Thus, this case indicates that although LFP therapy is generally selected for cases of advanced hepatocellular carcinoma, it also appears to be effective for long-term disease control in cases of hepatocellular cholangiocarcinoma.

Scopus

PubMed

researchmap

researchmap

記述言語：英語   出版者・発行元：NATURE PUBLISHING GROUP  

Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. Gpnmb is classified as a type 1 membrane protein and its soluble form is secreted by ADAM10-mediated cleavage. Gpnmb mRNA was found in the Kupffer cells and white adipose tissues (WATs) and its upregulation in obesity was recently found. Here, we generated aP2 promoter-driven Gpnmb transgenic (Tg) mice and the overexpression of Gpnmb ameliorated the fat accumulation and fibrosis of the liver in diet-induced obesity model. Soluble form of Gpnmb in sera was elevated in Gpnmb Tg mice and Gpnmb concentrated in hepatic macrophages and stellate cells interacted with calnexin, which resulted in the reduction of oxidative stress. In the patients with non-alcoholic steatohepatitis, serum soluble GPNMB concentrations were higher compared with the patients with simple steatosis. The GPNMB is a promising biomarker and therapeutic target for the development and progression of NAFLD in obesity.

DOI： 10.1038/srep16920

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：WILEY-BLACKWELL  

Web of Science

researchmap

記述言語：英語   出版者・発行元：WILEY-BLACKWELL  

AimMost of the modification of N-glycosylation reported in cancers including hepatocellular carcinoma (HCC) were based on the examinations of a small number of patients or particular proteins. The aim of this study is to reveal changes in whole serum N-glycan profiles systematically during the process of hepatocarcinogenesis and to elucidate their clinical application.
MethodsWe analyzed sera from 105 patients with chronic hepatitis/liver cirrhosis (CH/LC) and age-/sex-matched healthy volunteers (HLT), as well as from 114 patients with HCC. Serum N-glycan profiles were measured comprehensively by a new, quantitative, high-throughput method and compared with clinical parameters.
ResultsThe total amount of N-glycan expression was significantly higher in patients with CH/LC than in HLT; however, no differences were observed between CH/LC and HCC patients. In HCC patients, multi-antennary glycans with fucose residues, particularly m/z 3195, were increased compared with CH/LC patients. The expression of m/z 3195 was high, especially in patients with a high number of intrahepatic lesions (&gt;3), large tumor size (&gt;3cm), macroscopic vascular invasion or metastasis. The ratio of pairs of glycans on the same path of the biosynthesis pathway (m/z 3195/1914) showed a higher area under the receiver-operator curve of 0.810 than any other single glycan to distinguish HCC from CH/LC.
ConclusionWe demonstrate the full spectrum of the alterations of serum N-glycans comprehensively in patients with liver disease, and elucidate the possible use of glycans as novel biomarkers of liver disease progression.

DOI： 10.1111/hepr.12441

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：書評論文，書評，文献紹介等   出版者・発行元：MDPI AG  

Hepatitis B often progresses to decompensated liver cirrhosis requiring orthotopic liver transplantation (OLT). Although newer nucleos(t)ide analogues result in &gt;90% viral and hepatitis activity control, severely decompensated patients still need OLT because of drug-resistant virus, acute exacerbation, or hepatocellular carcinoma. Acute hepatitis B is also an indication for OLT, because it can progress to fatal acute liver failure. After OLT, the hepatitis B recurrence rate is &gt;80% without prevention, while &gt;90% of transplant recipients are clinically controlled with combined hepatitis B immunoglobulin (HBIG) and nucleos(t)ide analogue treatment. However, long-term HBIG administration is associated with several unresolved issues, including limited availability and extremely high cost; therefore, several treatment protocols with low-dose HBIG, combined with nucleos(t)ide analogues, have been investigated. Another approach is to induce self-producing anti-hepatitis B virus (HBV) antibodies using an HBV envelope (HBs) antigen vaccine. Patients who are not HBV carriers, such as those with acutely infected liver failure, are good candidates for vaccination. For chronic HBV carrier liver cirrhosis patients, a successful vaccine response can only be achieved in selected patients, such as those treated with experimentally reduced immunosuppression protocols. The present protocol for post-OLT HBV control and the future prospects of newer treatment strategies are reviewed.

DOI： 10.3390/ijms160817494

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：日本語   出版者・発行元：(一社)日本移植学会  

researchmap

記述言語：英語   出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS  

Background. Post orthotopic liver transplantation (OLT) viral hepatitis is an immunological condition where immune cells induce hepatitis during conditions of immune-suppression. The immune-regulatory programmed death-1 (PD-1)/PD-ligand 1 system is acknowledged to play important roles in immune-mediated diseases. However, the PD-1/PD-L2 interaction is not well characterized, with PD-L2 also exhibiting an immunostimulatory function. We hypothesized that this atypical molecule could affect the recurrence of post-OLT hepatitis. To test this hypothesis, we conducted immunohistochemical staining analysis and in vitro analysis of PD-L2. Methods. The expression of PD-L2 was evaluated in liver biopsy specimens from patients with chronic hepatitis B (n = 15), post-OLT hepatitis B (n = 8), chronic hepatitis C (n = 48), and post-OLT hepatitis C (CH-C-OLT) (n = 14). The effect of calcineurin inhibitors (CNIs) and hepatitis C virus (HCV) on PD-L2 expression was investigated in hepatoma cell lines. Results. The PD-L2 was highly expressed on CH-C-OLT hepatocytes. Treatment of hepatoma cell lines with CNIs resulted in increased PD-L2 expression, especially in combination with HCV core or NS3 protein. Transfection of cell lines with PD-L2 containing plasmid resulted in high intercellular adhesion molecule-1 (ICAM-1) expression, which might enhance hepatitis activity. Conclusions. The PD-L2 is highly expressed on CH-C-OLT hepatocytes, whereas HCV proteins, in combination with CNIs, induce high expression of PD-L2 resulting in elevated expression of ICAM-1. These findings demonstrate the effect of CNIs on inducing PD-L2 and subsequent ICAM-1 expression, effects that may produce inflammatory cell infiltration in post-OLT hepatitis C.

DOI： 10.1097/TP.0000000000000572

Web of Science

researchmap

記述言語：英語   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

A predictive marker of the rapid progression to hepatic failure is desired for patients with asymptomatic primary biliary cirrhosis (aPBC). We performed a systematic cohort analysis of 101 patients diagnosed as having aPBC and the rapid progression to liver failure in some, by focusing on cholestasis. Cholestasis was assessed by aberrant keratin7 (K-7) expressions in the patients' hepatocytes. Intralobular expressions of K-7 were found in 9 of the 101 patients. The grades of K-7 expression were significantly associated with the levels of alanine aminotransferase, alkaline phosphatase, and total bilirubin at the time of diagnosis, but not with bile duct loss or cholestasis. Stepwise logistic regression analysis revealed that high grades of K-7 expression correlated positively with high levels of total bilirubin. During the follow-up period, 8 patients developed jaundice, and the mean period until the development of jaundice was 5.2 years. The proportional hazards models for the risk of developing jaundice identified a high grade of aberrant K-7 expression in hepatocytes as the only significant risk factor. Aberrant K-7 expression in hepatocytes can be used as an additional marker to predict rapid progression to liver failure in patients with aPBC at the time of diagnosis.

DOI： 10.18926/AMO/53520

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：W B SAUNDERS CO-ELSEVIER INC  

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一社)日本肝臓学会  

researchmap

記述言語：英語   出版者・発行元：WILEY-BLACKWELL  

Background and AimInappropriate innate immune responses have been suggested to contribute to the pathogenesis of primary sclerosing cholangitis (PSC). We evaluated the associations of expressions of toll-like receptor (TLR) 4, TLR9, and nucleotide-binding oligomerization domain-containing protein (NOD)-like receptor family pyrin domain containing 3 (NLRP3) in the biliary epithelial cells (BECs) with clinical features of PSC patients.
MethodsWe retrospectively evaluated the expressions of TLR4, TLR9, and NLRP3 in the intrahepatic BECs by immunohistochemical staining in 21 PSC patients and 10 normal controls. In PSC, 17 patients underwent liver biopsy, and, in the other four patients, liver specimens were obtained at the time of liver transplantation.
ResultsTLR9 expressions in BECs were higher in PSC patients than in normal controls. TLR9 expressions were correlated with Ludwig fibrosis scores in PSC patients. TLR4 and NLRP3 expressions were similar between PSC patients and normal controls. Seventeen PSC patients undergoing liver biopsy were followed up during a median period of 55.7 months. Four reached to liver transplantation and four developed cholangiocarcinoma. Patients developing cholangiocarcinoma showed lower NLRP3 expressions than the others. Patients reaching to liver transplantation showed higher TLR9 expressions. Expression levels of TLR9 and NLRP3 were not correlated with liver biochemical tests and Mayo risk scores.
ConclusionsIn PSC, excessive immune responses through TLR9 signaling may be associated with the disease progression. Insufficient immune response through NLRP3 signaling may be associated with the development of cholangiocarcinoma. Evaluation of TLR9 and NLRP3 expressions in BECs may be useful for predicting the prognosis as an auxiliary marker.

DOI： 10.1111/jgh.12711

Web of Science

researchmap

記述言語：日本語   出版者・発行元：(一財)日本消化器病学会  

researchmap

記述言語：英語   掲載種別：書評論文，書評，文献紹介等   出版者・発行元：WILEY-BLACKWELL  

A combination of hepatitis B immunoglobulin (HBIG) and nucleoside/nucleotide analogs (NUC) is the current standard of care for controlling hepatitis B recurrence after orthotopic liver transplantation (OLT). However, long-term HBIG administration is associated with several unresolved issues, including limited availability and extremely high cost, and thus several protocols for treatment with low-dose HBIG combined with NUC or HBIG-free regimens have been developed. This article reviews recent advances in post-OLT hepatitis B virus (HBV) control and future methodological directions. New NUC such as entecavir, tenofovir or lamivudine plus adefovir dipivoxil combinations induce a very low frequency of viral resistance. The withdrawal of HBIG after several months of OLT under new NUC continuation also has permissible effects. Even after HBV reactivation, NUC can usually achieve viral control when viral markers are strictly followed up. Another approach is to induce self-producing anti-HBV antibodies via vaccination with a hepatitis B surface antigen vaccine. However, HBV vaccination is not sufficiently effective in patients to treat liver cirrhosis type B after OLT because immune tolerance to the virus has already continued for several decades. Trials of its safety and cost-effectiveness are required. This review advocates a safe and economical approach to controlling post-OLT HBV recurrence.

DOI： 10.1111/hepr.12368

Web of Science

researchmap

記述言語：英語   出版者・発行元：SPRINGER  

The presence of portal vein tumor thrombosis (PVTT) is a poor prognostic factor for patients with hepatocellular carcinomas (HCC). The purpose of this study was to determine the treatment effect of irradiation in combination with hepatic arterial infusion chemotherapy (HAIC) for these patients.
We retrospectively examined the outcome of 67 HCC patients with PVTT of the main trunk or first branch who received HAIC alone or with concurrent irradiation for PVTT (CCRT).
Thirty-four patients received HAIC, and 33 patients received CCRT. The time to progression (TTP) of PVTT in the CCRT group was significantly longer than in the HAIC group (p &lt; 0.01), and the TTP of intrahepatic nodules in the CCRT group tended to be longer than in the HAIC group (p = 0.06). The objective response rates of intrahepatic nodules (52 vs. 18 %, p &lt; 0.01) and PVTT (45 vs. 18 %, p = 0.01) were both significantly higher in the CCRT group than in the HAIC group, respectively. No significant difference in overall survival was found between the two groups (p = 0.14); however, the median survival time in the CCRT group was longer than that in the HAIC group (12.4 vs. 5.7 months, respectively).
CCRT might be a promising treatment for advanced-stage HCC with PVTT. CCRT prolonged the TTP of intrahepatic nodules and PVTT, and it improved the objective response rate of intrahepatic nodules and PVTT.

DOI： 10.1007/s12072-014-9592-y

Web of Science

researchmap

記述言語：英語   出版者・発行元：JAPAN SOC INTERNAL MEDICINE  

Objective Hepatopulmonary syndrome (HPS) is characterized by vascular dilatation and hyperdynamic circulation, while portopulmonary hypertension (POPH) is characterized by vasoconstriction with fibrous obliteration of the vascular bed. Vasoactive molecules such as nitric oxide (NO) are candidate factors for cirrhotic complications associated with these diseases. However, oxidative stress balance is not well characterized in HPS and POPH. The present objective is to investigate the oxidative stress and anti-oxidative stress balance and NO pathway balance in patients with potential HPS and POPH.
Methods We recruited patients with decompensated cirrhosis (n = 69) admitted to our hospital as liver transplantation candidates. Patients exhibiting partial pressure of oxygen lower than 80 mmHg and alveolararterial oxygen gradient (AaDO(2)) &gt;= 15 mmHg were categorized as potentially having HPS (23 of 69 patients). Patients exhibiting a tricuspid regurgitation pressure gradient &gt;= 25 mmHg were categorized as potentially having POPH (29 of 61 patients). Serum reactive oxygen metabolites were measured and anti-oxidative OXY-adsorbent test (OXY) were performed, and the balance of these tests was defined as the oxidative index. The correlation between these values and the clinical characteristics of the patients were assessed in a cross-sectional study.
Results Potential HPS patients exhibited no correlation with oxidative stress markers. Potential POPH patients exhibited lower OXY (p = 0.037) and higher oxidative index values (p = 0.001). Additionally, the vascular NO synthase enzyme inhibiting protein, asymmetric dimethylarginine, was higher in potential POPH patients (p = 0.049). The potential POPH patients exhibited elevated AaDO(2), suggesting the presence of pulmonary shunting.
Conclusion Potential POPH patients exhibited elevated oxidative stress with decreased anti-oxidative function accompanied by inhibited NO production. Anti-oxidants represent a candidate treatment for potential POPH patients.

DOI： 10.2169/internalmedicine.54.4889

Web of Science

researchmap