研究者詳細 - 豊岡　伸一

論文 - 豊岡　伸一

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Successful management of temporary veno-venous extracorporeal membrane oxygenation for a pediatric lung transplant recipient with bronchiolitis obliterans syndrome awaiting lung re-transplantation: a case report. 査読国際誌

Yasuaki Tomioka, Kentaroh Miyoshi, Shin Tanaka, Seiichiro Sugimoto, Rie Kanai, Tetsuro Nikai, Shinichi Toyooka, Masaomi Yamane

Surgical case reports 9 ( 1 ) 163 - 163 2023年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: The use of extracorporeal membrane oxygenation (ECMO) as a bridge to lung transplantation is an uncommon strategy in Japan owing to the severe donor shortage and absence of urgent allocation policy. Moreover, the use of veno-venous (VV) ECMO for immunosuppressed patients is controversial; thus, applying ECMO to patients who await lung re-transplantation is challenging. CASE PRESENTATION: A 16-year-old lung transplant recipient with grade 3 bronchiolitis obliterans syndrome was waitlisted for lung re-transplantation. Eleven months later, he fell into severe respiratory acidosis with hypercapnia, which were not resolved with mechanical ventilation. VV ECMO was introduced to minimize lung stress and strain. Tracheostomy was additionally performed on day 5 after the start of ECMO, and respiratory condition swiftly improved; hence, the weaning process from VV ECMO began on day 9. Rehabilitation became implementable, and bilateral re-lung transplantation was successfully performed 6 months after the ECMO treatment. No critical complication related to the precedent use of ECMO was noted. CONCLUSIONS: VV ECMO can be a feasible treatment option even for lung transplant candidates awaiting re-transplantation for a prolonged period. Introduction of ECMO and tracheostomy in the early deterioration stage may be crucial to successful subsequent patient management.

DOI： 10.1186/s40792-023-01742-4

Prognostic Impact of Tumor-Infiltrating Lymphocytes, Tertiary Lymphoid Structures, and Neutrophil-to-Lymphocyte Ratio in Pulmonary Metastases from Uterine Leiomyosarcoma. 査読国際誌

Naoki Matsuda, Hiromasa Yamamoto, Tomohiro Habu, Kazuma Iwata, Kei Matsubara, Shin Tanaka, Kohei Hashimoto, Kazuhiko Shien, Ken Suzawa, Kentaroh Miyoshi, Tomohiro Toji, Mikio Okazaki, Seiichiro Sugimoto, Katsuhito Takahashi, Shinichi Toyooka

Annals of surgical oncology 2023年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: The presence of tumor-infiltrating lymphocytes (TILs) and tertiary lymphoid structures (TLSs) in tumor tissue has been related to the prognosis in various malignancies. Meanwhile, neutrophil-to-lymphocyte ratio (NLR) as a systemic inflammation marker also has been associated with the prognosis in them. However, few reports have investigated the relationship between pulmonary metastases from sarcoma and these biomarkers. METHODS: We retrospectively recruited 102 patients undergoing metastasectomy for pulmonary metastases from uterine leiomyosarcoma at Okayama University Hospital from January 2006 to December 2019. TILs and TLSs were evaluated by immunohistochemical staining of surgically resected specimens of pulmonary metastases using anti-CD3/CD8/CD103/Foxp3/CD20 antibodies. NLR was calculated from the blood examination immediately before the most recent pulmonary metastasectomy. We elucidated the relationship between the prognosis and these factors. Because we considered that the status of tumor tissue and systemic inflammation were equally valuable, we also assessed the impact of the combination of TILs or TLSs and NLR on the prognosis. RESULTS: As for TILs, CD3-positive cells and CD8-positive cells were correlated with the prognosis. The prognosis was significantly better in patients with CD3-high group, CD8-high group, TLSs-high group, and NLR-low group, respectively. The prognosis of CD8-high/NLR-low group and TLSs-high/NLR-low group was significantly better than that of CD8-low/NLR-high group and TLSs-low/NLR-high group, respectively. CONCLUSIONS: CD3-positive TILs, CD8-positive TILs, TLSs, and NLR are correlated with the prognosis, respectively. The combination of CD8-positive TILs or TLSs and NLR may be the indicators to predict the prognosis of patients with pulmonary metastases from uterine leiomyosarcoma.

DOI： 10.1245/s10434-023-14176-x

Five-Year Overall Survival Analysis of the JIPANG Study: Pemetrexed or Vinorelbine Plus Cisplatin for Resected Stage II-IIIA Nonsquamous Non-Small-Cell Lung Cancer. 査読国際誌

Hirotsugu Kenmotsu, Nobuyuki Yamamoto, Toshihiro Misumi, Kiyotaka Yoh, Haruhiro Saito, Shunichi Sugawara, Koji Yamazaki, Kazuhiko Nakagawa, Kenji Sugio, Takashi Seto, Shinichi Toyooka, Hiroshi Date, Tetsuya Mitsudomi, Isamu Okamoto, Kohei Yokoi, Hideo Saka, Hiroaki Okamoto, Yuichi Takiguchi, Toshiaki Takahashi, Masahiro Tsuboi

Journal of clinical oncology : official journal of the American Society of Clinical Oncology JCO2300179 2023年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned co-primary or secondary analyses are not yet available. Clinical Trial Updates provide an opportunity to disseminate additional results from studies, published in JCO or elsewhere, for which the primary end point has already been reported.The JIPANG study is an open-label phase III trial evaluating the efficacy of pemetrexed plus cisplatin (PemP) versus vinorelbine plus cisplatin (NP) as adjuvant chemotherapy in patients with stage II-IIIA nonsquamous non-small-cell lung cancer (NSCLC). Here, we report the long follow-up overall survival (OS) data. Eligible patients were randomly assigned to receive either PemP or NP. The primary end point was recurrence-free survival (RFS), and the secondary end point included OS. This analysis was performed using data collected 5 years after the last patient enrollment. Among 804 patients enrolled, 783 patients were eligible (384 for NP and 389 for PemP). The updated median RFS was 37.5 months in the NP arm and 43.4 months in the PemP arm with a hazard ratio of 0.95 (95% CI, 0.79 to 1.14). At a median follow-up of 77.3 months, the OS rates at 3 and 5 years were 84.1% and 75.6% versus 87.0% and 75.0% with a hazard ratio of 1.04 (95% CI, 0.81 to 1.34). This long-term follow-up analysis showed that PemP had similar efficacy to NP in both RFS and OS for this population, with one of the longest OS data compared with the historical data.

DOI： 10.1200/JCO.23.00179

[Perioperative Management for Patients with Metabolic and Endocrine Disorders]. 査読

Ken Suzawa, Shinichi Toyooka

Kyobu geka. The Japanese journal of thoracic surgery 76 ( 10 ) 844 - 848 2023年9月

記述言語：日本語掲載種別：研究論文（学術雑誌）

In recent years, the number of surgical cases involving patients with comorbidities has been increasing due to the aging society. Such patients may have a higher risk of postoperative morbidity or mortality. Therefore, surgeons are required to evaluate the current control status of the comorbidity, and perform appropriate perioperative management to decrease perioperative risk. This article focuses on the preoperative evaluation and management, as well as intraoperative and postoperative management of diabetes mellitus, thyroid dysfunction, which are frequently encountered among patients with metabolic and endocrine disorders, and paraganglioma, which is a rare disease but requires special attention in the field of thoracic surgery.

Restrictive allograft dysfunction rather than bronchiolitis obliterans syndrome had a major impact on the overall survival after living-donor lobar lung transplantation. 査読

Kei Matsubara, Shinji Otani, Haruchika Yamamoto, Kohei Hashimoto, Shin Tanaka, Kazuhiko Shien, Ken Suzawa, Kentaroh Miyoshi, Hiromasa Yamamoto, Mikio Okazaki, Seiichiro Sugimoto, Shinichi Toyooka

Surgery today 2023年7月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: Chronic lung allograft dysfunction (CLAD) is a known long-term fatal disorder after lung transplantation. In this study, we evaluated the CLAD classification of the International Society for Heart and Lung Transplantation (ISHLT) for living-donor lobar lung transplantation (LDLLT). METHODS: We conducted a single-center retrospective review of data from 73 patients who underwent bilateral LDLLT between 1998 and 2019. Factors related to opacity on computed tomography (CT) and restriction on pulmonary function tests (PFTs) were also analyzed. RESULTS: Overall, 26 (36%) patients were diagnosed with CLAD, including restrictive allograft syndrome (RAS), n = 10 (38.5%); bronchiolitis obliterans syndrome (BOS), n = 8 (30.8%); mixed, n = 1 (3.8%); undefined, n = 2 (7.7%); and unclassified, n = 5 (19.2%). The 5-year survival rate after the CLAD onset was 60.7%. The survival of patients with BOS was significantly better than that of patients with RAS (p = 0.012). In particular, patients with restriction on PFT had a significantly worse survival than those without restriction (p = 0.001). CONCLUSIONS: CLAD after bilateral LDLLT does not have a major impact on the recipient survival, especially in patients with BOS. Restriction on PFT may predict a particularly poor prognosis in patients with CLAD after bilateral LDLLT.

DOI： 10.1007/s00595-023-02729-2

ASO Visual Abstract: EGFR Mutation is a Prognostic Factor in Lung Cancer Patients with Pleural Dissemination Detected During or After Surgery. 査読国際誌

Toshiya Fujiwara, Kazuhiko Shien, Motoki Matsuura, Junichi Soh, Hiromasa Yamamoto, Soshi Takao, Yuho Maki, Tsuyoshi Ueno, Ryujiro Sugimoto, Ken Suzawa, Mikio Okazaki, Hiroyuki Tao, Makio Hayama, Masafumi Kataoka, Yoshifumi Sano, Hidetoshi Inokawa, Motohiro Yamashita, Osamu Kawamata, Kazuhiko Kataoka, Shinichi Toyooka

Annals of surgical oncology 2023年7月

Long-term outcomes following surgical treatment for thymic epithelial tumor in Japan and an analysis of prognostic factors based on the Japanese Association for Research on the Thymus nationwide database. 査読

Meinoshin Okumura, Ichiro Yoshino, Soichiro Funaki, Katsuhiro Okuda, Shun-Ichi Watanabe, Masahiro Tsuboi, Kimihiro Shimizu, Hiroshi Date, Toyofumi F Chen-Yoshikawa, Jun Nakajima, Shinichi Toyooka, Hisao Asamura

Surgery today 2023年7月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: Patients with a thymic epithelial tumor (TET), comprising thymoma, thymic carcinoma (TC), and thymic neuroendocrine neoplasm (TNEN), are rarely encountered. The present study was conducted to determine the recent outcomes of surgical treatment for TET in Japan and clarify the significance of prognostic factors by analyzing a nationwide database created by the Japanese Association for Research on the Thymus (JART). METHODS: The JART database includes records of 2471 thymoma, 285 TC, and 56 TNEN cases surgically treated between 1991 and 2010. At the time of the final follow-up examination, 439 patients had died, with tumor the cause of death in 188. The disease-specific survival was examined using the Kaplan-Meier method, with Cox's proportional hazards model utilized to determine independent prognostic factors. RESULTS: The 10-year survival rate according to TNM-based Stage I, II, IIIA, IIIB, IVA, and IVB classification was 98.7%, 76.8%, 85.0%, 68.9%, 66.2%, and 59.8%, respectively. The T factor, M factor, and tumor size were independent prognostic factors in both thymoma and thymic carcinoma cases, while the N factor had tendency to be a prognostic factor in thymoma but not in thymic carcinoma cases. The WHO histological type was an independent factor in thymoma cases. CONCLUSION: The significance of pathology and TNM classification as prognostic factors was confirmed.

DOI： 10.1007/s00595-023-02705-w

Development and validation of a symptom illustration scale from the patient-reported outcome common terminology criteria for adverse events for patients with breast cancer. 査読

Yoko Suzuki, Takayuki Iwamoto, Maya Uno, Minami Hatono, Yukiko Kajiwara, Yuko Takahashi, Mariko Kochi, Tadahiko Shien, Yuichiro Kikawa, Yukari Uemura, Yasuhiro Hagiwara, Seiichiro Yamamoto, Naruto Taira, Hiroyoshi Doihara, Shinichi Toyooka

Breast cancer (Tokyo, Japan) 30 ( 5 ) 856 - 868 2023年7月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: Emojis are commonly used for daily communication and may be useful in assessing patient-reported outcomes (PROs) in breast cancer. The purpose of this study is to develop and validate a Symptom Illustration Scale (SIS) as a new PRO measurement. METHODS: Eighteen original SIS items were developed from the PRO-CTCAE. In cohort one, the SIS validity and reliability were examined in patients with breast cancer, using a semi-structured five-question survey to investigate content validity. PROs with PRO-CTCAE and SIS were examined twice to determine criteria validity and test-retest reliability. In cohort two, the responsiveness of the scales were examined in patients treated with anthracycline, docetaxel, paclitaxel, and endocrine therapy. PROs with PRO-CTCAE and SIS were investigated two or three times, depending on the therapy. RESULTS: Patients were enrolled from August 2019 to October 2020. In cohort one (n = 70), most patients had no difficulties with the SIS, but 16 patients indicated that it was difficult to understand severities in the SIS. For criterion validity, Spearman rank correlation coefficients (rs) between PRO-CTCAE and SIS items were ≥ 0.41, except for "Decreased appetite." For test-retest reliability, κ coefficients of the SIS were ≥ 0.41 for 16/18 items (88.9%). Response time was significantly shorter for the SIS than for PRO-CTCAE (p < 0.001). In cohort two (n = 106), score changes between PRO-CTCAE and SIS for relevant symptoms all had correlations with rs ≥ 0.41. CONCLUSION: An original SIS from the PRO-CTCAE for patients with breast cancer were verified the validity, reliability, and responsiveness. Further studies to improve and validate the SIS are needed.

DOI： 10.1007/s12282-023-01480-3

ASO Author Reflections: Prognostic Impact of the Primary Tumor Resection for Lung Cancer Patients Diagnosed with Pleural Dissemination in the Perioperative Period-Importance of Biomarker-Based Treatment Decision Making. 査読国際誌

Kazuhiko Shien, Toshiya Fujiwara, Shinichi Toyooka

Annals of surgical oncology 2023年6月

EGFR Mutation is a Prognostic Factor in Lung Cancer Patients with Pleural Dissemination Detected During or After Surgery. 査読国際誌

Toshiya Fujiwara, Kazuhiko Shien, Motoki Matsuura, Junichi Soh, Hiromasa Yamamoto, Soshi Takao, Yuho Maki, Tsuyoshi Ueno, Ryujiro Sugimoto, Ken Suzawa, Mikio Okazaki, Hiroyuki Tao, Makio Hayama, Masafumi Kataoka, Yoshifumi Sano, Hidetoshi Inokawa, Motohiro Yamashita, Osamu Kawamata, Kazuhiko Kataoka, Shinichi Toyooka

Annals of surgical oncology 2023年6月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Primary lung tumors are sometimes resected when either pleural dissemination (PD) or malignant pleural effusion (MPE) exists. This study clarified the prognostic factors for non-small cell lung cancer (NSCLC) with either PD and MPE, or both, detected during or after surgery. PATIENTS AND METHODS: We examined patients with NSCLC from a multicenter database who had either PD, MPE, or both, detected during or after surgery between 2005 and 2015. Hazard ratios and 95% confidence intervals were estimated using the Cox proportional hazards model adjusted for potential confounding factors. RESULTS: Among 9463 registered patients, PD, MPE, or both, were found in 114 patients with NSCLC during or after surgery. Primary tumor resection and exploratory thoracotomy were performed in 65 and 49 patients, respectively. In univariate analysis, adenocarcinoma, clinically undetected lymph node metastasis (c-N0 or unknown), EGFR mutation, and combination of chemotherapy or tyrosine kinase inhibitors after surgery were better prognostic factors for overall survival (OS), whereas in the multivariate analysis, adenocarcinoma, clinically undetected lymph node metastasis, and EGFR mutation were favorable independent prognostic factors in OS. Additionally, limited to patients with EGFR mutation, patients with primary lung tumor resection showed a significantly better 5-year OS than those with exploratory thoracotomy (86.4 vs. 44.8%; p < 0.001). CONCLUSION: Our findings show that surgical resection of primary tumors could improve the prognosis of patients with PD, MPE, or both, detected during or after surgery when the tumors harbor an EGFR mutation.

DOI： 10.1245/s10434-023-13791-y

Elderly lung transplant recipients show acceptable long-term outcomes for lung transplantation: A propensity score-matched analysis. 査読

Yasuaki Tomioka, Shin Tanaka, Shinji Otani, Toshio Shiotani, Haruchika Yamamoto, Kentaroh Miyoshi, Mikio Okazaki, Seiichiro Sugimoto, Masaomi Yamane, Shinichi Toyooka

Surgery today 2023年6月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: Although the performance lung transplantation (LTx) in the elderly (≥ 60 years) has increased globally, the situation in Japan remains quite different, because the age limit at registration for cadaveric transplantation is 60 years. We investigated the long-term outcomes of LTx in the elderly in Japan. METHODS: This was a single-center retrospective study. We divided the patients into two groups according to age: the younger group (< 60 years; Y group; n = 194) and the elderly group (≥ 60 years; E group; n = 10). We performed three-to-one propensity score matching to compare the long-term survival between the E and Y groups. RESULTS: In the E group, the survival rate was significantly worse (p = 0.003), and single-LTx was more frequent (p = 0.036). There was a significant difference in the indications for LTx between the two groups (p < 0.001). The 5-year survival rate after single-LTx in the E group was significantly lower than that in the Y group (p = 0.006). After propensity score matching, the 5-year survival rates of the two groups were comparable (p = 0.55). However, the 5-year survival rate after single-LTx in the E group was significantly lower than that in the Y group (p = 0.007). CONCLUSION: Elderly patients showed acceptable long-term survival after LTx.

DOI： 10.1007/s00595-023-02699-5

Identification of genetic loci associated with renal dysfunction after lung transplantation using an ethnic-specific single-nucleotide polymorphism array. 査読国際誌

Yasuaki Tomioka, Seiichiro Sugimoto, Haruchika Yamamoto, Shuta Tomida, Toshio Shiotani, Shin Tanaka, Kazuhiko Shien, Ken Suzawa, Kentaroh Miyoshi, Shinji Otani, Hiromasa Yamamoto, Mikio Okazaki, Masaomi Yamane, Shinichi Toyooka

Scientific reports 13 ( 1 ) 8912 - 8912 2023年6月

記述言語：英語掲載種別：研究論文（学術雑誌）

Renal dysfunction is a long-term complication associated with an increased mortality after lung transplantation (LT). We investigated the association of single-nucleotide polymorphisms (SNPs) with the development of renal dysfunction after LT using a Japanese-specific SNP array. First, eligible samples of 34 LT recipients were genotyped using the SNP array and divided into two groups, according to the presence of homozygous and heterozygous combinations of mutant alleles of the 162 renal-related SNPs. To identify candidate SNPs, the renal function tests were compared between the two groups for each SNP. Next, we investigated the association between the candidate SNPs and the time course of changes of the estimated glomerular filtration rate (eGFR) in the 99 recipients until 10 years after the LT. ΔeGFR was defined as the difference between the postoperative and preoperative eGFR values. Eight SNPs were identified as the candidate SNPs in the 34 recipients. Validation analysis of these 8 candidate SNPs in all the 99 recipients showed that three SNPs, namely, rs10277115, rs4690095, and rs792064, were associated with significant changes of the ΔeGFR. Pre-transplant identification of high-risk patients for the development of renal dysfunction after LT based on the presence of these SNPs might contribute to providing personalized medicine.

DOI： 10.1038/s41598-023-36143-y

Pulmonary alveolar proteinosis after lung transplantation: Two case reports and literature review. 査読国際誌

Shinichi Kawana, Kentaroh Miyoshi, Shin Tanaka, Seiichiro Sugimoto, Dai Shimizu, Kei Matsubara, Mikio Okazaki, Noboru Hattori, Shinichi Toyooka

Respirology case reports 11 ( 6 ) e01160 2023年6月

記述言語：英語

Pulmonary alveolar proteinosis (PAP) affecting transplanted lungs is not well recognized. Herein, we report two cases of PAP after lung transplantation (LTx). The first case was a 4-year-old boy with hereditary pulmonary fibrosis who underwent bilateral LTx and presented with respiratory distress on postoperative day (POD) 23. He was initially treated for acute rejection, died due to infection on POD 248, and was diagnosed with PAP at autopsy. The second case involved a 52-year-old man with idiopathic pulmonary fibrosis who underwent bilateral LTx. On POD 99, chest computed tomography revealed ground-glass opacities. Bronchoalveolar lavage and transbronchial biopsy led to a diagnosis of PAP. Follow-up with immunosuppression tapering resulted in clinical and radiological improvement. PAP after lung transplantation mimics common acute rejection; however, is potentially transient or resolved with tapering immunosuppression, as observed in the second case. Transplant physicians should be aware of this rare complication to avoid misconducting immunosuppressive management.

DOI： 10.1002/rcr2.1160

Endobronchial Metastasis with Bloody Sputum 20 Years after Complete Resection of type A Non-Invasive Thymoma. 査読

Mototsugu Watanabe, Hiromasa Yamamoto, Kentaroh Miyoshi, Seiichiro Sugimoto, Shinichi Toyooka

Acta medica Okayama 77 ( 3 ) 331 - 334 2023年6月

記述言語：英語

Masaoka stage I type A thymomas rarely recur. We report the case of an 82-year-old man who developed endobronchial metastasis after thymothymectomy for Masaoka stage I type A thymoma. Twenty years after surgery, the patient developed bloody sputum, and chest computed tomography revealed a neoplasm obstructing the right upper lobe bronchus of the lung with enlarged mediastinal lymph nodes. He underwent right upper lobectomy and mediastinal lymph node dissection. Although preoperative pathological diagnosis was squamous cell carcinoma of the lung, postoperative histopathology revealed endobronchial metastasis of the thymoma. Nine years later, at age 89, the patient is alive and well.

DOI： 10.18926/AMO/65503

The impact of prognostic nutrition index on the waitlist mortality of lung transplantation. 査読

Kei Matsubara, Shinji Otani, Haruchika Yamamoto, Yasuaki Tomioka, Toshio Shiotani, Kentaroh Miyoshi, Mikio Okazaki, Seiichiro Sugimoto, Masaomi Yamane, Shinichi Toyooka

General thoracic and cardiovascular surgery 71 ( 5 ) 306 - 312 2023年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: The prognostic nutrition index (PNI), calculated using serum albumin and total lymphocyte count, is a recent topical index related to inflammation. Preoperative PNI is regarded as a new preoperative prognostic score in lung transplantation (LTx). This study aimed to investigate the impact of PNI at the time of registration as a prognostic parameter of mortality on the waiting list for LTx. METHODS: A retrospective review was conducted on the data of 132 adult patients registered for LTx in our department between January 2013 and June 2020. Patients who finally received LTx were analyzed as censored data. The overall survival was evaluated using the Kaplan-Meier method for pre-registered clinical factors including the PNI at the time of registration. Overall survival was calculated from the date of listing to the Japan Organ Transplant Network to the date of death. RESULTS: The low-PNI group had a significantly worse prognosis. Multivariate analysis demonstrated that age (p = 0.023), idiopathic interstitial pneumonia (p < 0.001), lung allocation score (LAS) (p < 0.001), and PNI (p < 0.001) were independent prognostic factors for waitlist mortality. CONCLUSIONS: PNI at the time of registration can be an independent prognostic parameter in registered candidates for LTx.

DOI： 10.1007/s11748-022-01895-3

S100A8/A9 as a prognostic biomarker in lung transplantation. 査読国際誌

Kentaro Nakata, Mikio Okazaki, Shinichi Kawana, Yujiro Kubo, Dai Shimizu, Shin Tanaka, Kohei Hashimoto, Ken Suzawa, Kazuhiko Shien, Kentaroh Miyoshi, Hiromasa Yamamoto, Seiichiro Sugimoto, Shinichi Toyooka

Clinical transplantation e15006 2023年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: S100A8/A9 is a damage-associated molecule that augments systemic inflammation. However, its role in the acute phase after lung transplantation (LTx) remains elusive. This study aimed to determine S100A8/A9 levels after lung transplantation (LTx) and evaluate their impact on overall survival (OS) and chronic lung allograft dysfunction (CLAD)-free survival. METHODS: Sixty patients were enrolled in this study, and their plasma S100A8/A9 levels were measured on days 0, 1, 2, and 3 after LTx. The association of S100A8/A9 levels with OS and CLAD-free survival was assessed using univariate and multivariate Cox regression analyses. RESULTS: S100A8/A9 levels were elevated in a time-dependent manner until 3 days after LTx. Ischemic time was significantly longer in the high S100A8/9 group than in the low S100A8/A9 group (p = .017). Patients with high S100A8/A9 levels (> 2844 ng/mL) had worse prognosis (p = .031) and shorter CLAD-free survival (p = .045) in the Kaplan-Meier survival analysis than those with low levels. Furthermore, multivariate Cox regression analysis showed that high S100A8/A9 levels were a determinant of poor OS (hazard ratio [HR]: 3.7; 95% confidence interval [CI]: 1.2-12; p = .028) and poor CLAD-free survival (HR: 4.1; 95% CI: 1.1-15; p = .03). In patients with a low primary graft dysfunction grade (0-2), a high level of S100A8/A9 was also a poor prognostic factor. CONCLUSIONS: Our study provided novel insights into the role of S100A8/A9 as a prognostic biomarker and a potential therapeutic target for LTx.

DOI： 10.1111/ctr.15006

Prognostic factors for lung transplant recipients focusing on age and gender: the Japanese lung transplantation report 2022. 査読

Hisashi Oishi, Yoshinori Okada, Masaaki Sato, Jun Nakajima, Daisuke Nakajima, Takeshi Shiraishi, Toshihiko Sato, Takashi Kanou, Yasushi Shintani, Kentaroh Miyoshi, Shinichi Toyooka, Sumiko Maeda, Masayuki Chida, Keitaro Matsumoto, Takeshi Nagayasu, Hidemi Suzuki, Ichiro Yoshino, Yasushi Matsuda, Yasushi Hoshikawa, Hiroshi Date

Surgery today 2023年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: To clarify the impact of donor and recipient characteristics on the survival of recipients before and after lung transplantation in the Japanese population. METHODS: Patients' data were collected for retrospective analysis from all authorized lung transplant centers in Japan. We included 1963 patients listed for lung transplantation by the end of December 2021, comprised of 658 deceased-donor and 270 living-donor lung transplants. RESULTS: Primary disease had a significant impact on the mortality of patients waiting for transplantation. The indications for transplant significantly affected the post-transplant survival rate of deceased-donor lung transplant recipients. The recipient's age also significantly affected the post-transplant survival rate of the deceased-donor and living-donor lung transplant recipients. The recipients of grafts transplanted from donors aged 61 years or older showed a worse post-transplant survival rate (≧60 years old). The survival rate for the combination of a female donor to a male recipient among the deceased-donor lung transplant recipients was the worst among the four combinations. CONCLUSION: The donor and recipient characteristics significantly impacted the survival of recipients after lung transplantation. The underlying mechanism of the negative impact of the gender mismatch of female donor to male recipient on post-transplant survival needs to be investigated further.

DOI： 10.1007/s00595-023-02686-w

Diagnostic value of circulating microRNA-21 in chronic lung allograft dysfunction after bilateral cadaveric and living-donor lobar lung transplantation. 査読国際誌

Toshio Shiotani, Seiichiro Sugimoto, Yasuaki Tomioka, Haruchika Yamamoto, Shin Tanaka, Kentaroh Miyoshi, Ken Suzawa, Kazuhiko Shien, Hiromasa Yamamoto, Mikio Okazaki, Shinichi Toyooka

Heliyon 9 ( 4 ) e14903 2023年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: MicroRNAs (miRNAs) involved in the pathogenesis of pulmonary fibrosis have been shown to be associated with the development of chronic lung allograft dysfunction (CLAD) after lung transplantation (LT). We investigated the role of circulating miRNAs in the diagnosis of CLAD after bilateral LT, including cadaveric LT (CLT) and living-donor lobar LT (LDLLT). METHODS: The subjects of this retrospective study were 37 recipients of bilateral CLT (n = 23) and LDLLT (n = 14), and they were divided into a non-CLAD group (n = 24) and a CLAD group (n = 13). The plasma miRNA levels of the two groups were compared, and correlations between their miRNAs levels and percent baseline forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), and total lung capacity (TLC) values were calculated from one year before to one year after the diagnosis of CLAD. RESULTS: The plasma levels of both miR-21 and miR-155 at the time of the diagnosis of CLAD were significantly higher in the CLAD group than in the non-CLAD group (miR-21, P = 0.0013; miR-155, P = 0.042). The miR-21 levels were significantly correlated with the percent baseline FEV1, FVC, and TLC value of one year before and at the time of diagnosis of CLAD (P < 0.05). A receiver operating characteristic curve analysis of the performance of miR-21 levels in the diagnosis of CLAD yielded an area under the curve of 0.89. CONCLUSION: Circulating miR-21 appears to be of potential value in diagnosing CLAD after bilateral LT.

DOI： 10.1016/j.heliyon.2023.e14903

(891) Bilateral Lung Transplantation from Living Donors in a 67-Year-Old Patient 査読

H. Ujike, S. Tanaka, H. Choshi, S. Kawana, Y. Kubo, D. Shimizu, K. Matsubara, K. Hashimoto, K. Shien, K. Suzawa, K. Miyoshi, H. Yamamoto, M. Okazaki, S. Sugimoto, S. Toyooka

The Journal of Heart and Lung Transplantation 42 ( 4 ) 2023年4月

(347) Augmented Humoral Response to a Third And Fourth Dose of Mrna Sars-Cov-2 Vaccines in Lung Transplant Recipients 査読

S. Kawana, S. Sugimoto, K. Matsubara, S. Tanaka, K. Miyoshi, H. Choshi, H. Ujike, Y. Kubo, D. Shimizu, K. Hashimoto, K. Shien, K. Suzawa, H. Yamamoto, M. Okazaki, S. Toyooka

The Journal of Heart and Lung Transplantation 42 ( 4 ) S164 - S165 2023年4月

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