Faculty Profiles - HORIGUCHI Shigeru

Papers - HORIGUCHI Shigeru

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Contrast-enhanced harmonic endoscopic ultrasonography with time-intensity curve analysis for intraductal papillary mucinous neoplasms of the pancreas. Reviewed International journal

Naoki Yamamoto, Hironari Kato, Takeshi Tomoda, Kazuyuki Matsumoto, Ichiro Sakakihara, Yasuhiro Noma, Shigeru Horiguchi, Ryo Harada, Koichiro Tsutsumi, Keisuke Hori, Takehiro Tanaka, Hiroyuki Okada, Kazuh de Yamamoto

Endoscopy 48 ( 1 ) 26 - 34 2016.1

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND STUDY AIMS: Preoperative diagnosis of the pathological grade of intraductal papillary mucinous neoplasms (IPMNs) is difficult. This study aimed to evaluate the accuracy of contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS) with time - intensity curve analysis in differentiating between low or intermediate grade dysplasia (LGD/IGD) and high grade dysplasia or invasive carcinoma (HGD/invasive carcinoma) in IPMNs and to assess correlation between the time - intensity curve parameters and tumor microvessel density. PATIENTS AND METHODS: Data from 30 patients with resected IPMNs (14 LGD/IGD, 16 HGD/invasive carcinoma) who underwent CH-EUS with time - intensity curve analysis were evaluated retrospectively. Time - intensity curve parameters and the microvessel density of the mural nodule were compared between the HGD/invasive carcinoma and LGD/IGD groups; the diagnostic accuracy of the time - intensity curve parameters was evaluated. RESULTS: The echo intensity change and echo intensity reduction rate of the mural nodule, and the nodule/pancreatic parenchyma contrast ratio were significantly higher in the HGD/invasive carcinoma group than in the LGD/IGD group (P < 0.05); the accuracies of these parameters were 80 %, 86.7 %, and 93.3 %, respectively. The microvessel density of the mural nodule was significantly higher in the HGD/invasive carcinoma group (P = 0.002). There was a strong positive, linear correlation between the echo intensity change of the mural nodule and the microvessel density (r = 0.803, P < 0.001). CONCLUSIONS: CH-EUS with time - intensity curve analysis is potentially useful for quantitatively evaluating the blood flow of IPMN microvasculature, and for differentiating between HGD/invasive carcinoma and LGD/IGD.

DOI： 10.1055/s-0034-1393563

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Pancreatic Hepatoid Carcinoma Mimicking a Solid Pseudopapillary Neoplasm: A Challenging Case on Endoscopic Ultrasound-guided Fine-needle Aspiration Reviewed

Yutaka Akimoto, Hironari Kato, Kazuyuki Matsumoto, Ryo Harada, Shinsuke Oda, Soichiro Fushimi, Shou Mizukawa, Shuntaro Yabe, Daisuke Uchida, Hiroyuki Seki, Takeshi Tomoda, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Takahito Yagi, Hiroyuki Okada

INTERNAL MEDICINE 55 ( 17 ) 2405 - 2411 2016

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC INTERNAL MEDICINE

A 59-year-old man was admitted to our hospital for treatment of a 45 mm pancreatic mass found during a medical examination. Endoscopic ultrasound-guided fine-needle aspiration cytology showed polygonal cells with pseudopapillary structures. The tumor cells were positive for nuclear/cytoplasmic beta-catenin and CD10, and negative for chromogranin A. After a tentative diagnosis of a solid pseudopapillary neoplasm, middle pancreatectomy was performed. Histologically, polygonal cells with abundant eosinophilic cytoplasm formed in the trabeculae and were immunohistochemically positive for HepPar1 and protein induced by vitamin K absence or antagonist-II. The tumor was finally diagnosed to be pancreatic hepatoid carcinoma. No recurrence occurred for 12 months, even without adjuvant chemotherapy.

DOI： 10.2169/internalmedicine.55.6741

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Time-dependent image changes after ethanol injection into the pancreas: an experimental study using a porcine model. Reviewed International journal

Kazuyuki Matsumoto, Hironari Kato, Koichiro Tsutsumi, Soichiro Fushimi, Masaya Iwamuro, Shinsuke Oda, Sho Mizukawa, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Naoki Yamamoto, Shigeru Horiguchi, Hiroyuki Okada

Ecancermedicalscience 10 663 - 663 2016

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND: Ethanol, a commonly available agent, has been used to successfully ablate cystic and solid lesions in the pancreas. The aim of this study is to investigate the effects of an ethanol injection into the porcine pancreas and observe the time-dependent image changes in the pancreatic parenchyma. METHODS: Pure ethanol was injected into the pancreatic tail using a 25-gauge EUS needle with direct ultrasound guidance under celiotomy: 1 mL and 2 mL were injected, respectively. The abdomen was closed after the injection. MRI was performed before the procedure, immediately after, and on postoperative day (POD) seven. Blood samples were taken before the procedure and on PODs one, three, five, and seven. The pigs were euthanised on POD seven. RESULTS: Immediately after the injection, linear high signal areas in the pancreatic tail on T2 and rounded speckled high signal areas on DWI images were detected in both animals, measuring 35 × 32 mm in the 1 mL injected pig and 42 × 38mm in the 2 mL injected pig. After POD seven, rounded high signal areas were noted on T2 images, measuring 22 × 18 mm and 36 × 28 mm respectively. On POD one, the 1 mL injected animal had a 53% elevation in serum amylase while the 2 mL injected animal had a 66% elevation. Histologically, cystic and necrotic changes in the parenchyma were observed, measuring 23 × 22 mm and 40 × 35 mm respectively. CONCLUSIONS: Our results, which are limited to normal pancreas, suggested that a 1 mL injection caused localised changes within the pancreas while a 2 mL injection induced more widespread changes beyond the pancreas. The effective area of ethanol was widespread immediately after injection, and then the area was reduced with cystic and necrosis changes.

DOI： 10.3332/ecancer.2016.663

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[Radical surgery after successful chemotherapy in a case of primary small cell carcinoma of the liver]. Reviewed

Yutaka Akimoto, Koichiro Tsutsumi, Hironari Kato, Hidenori Hata, Hiroyuki Sakae, Daisuke Uchida, Takeshi Tomoda, Kazuyuki Matsumoto, Yasuhiro Noma, Naoki Yamamoto, Shigeru Horiguchi, Ryo Harada, Hiroyuki Okada, Hiroyuki Yanai, Takahito Yagi, Kazuhide Yamamoto

Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology 112 ( 11 ) 2024 - 34 2015.11

Language：Japanese Publishing type：Research paper (scientific journal)

A 52-year-old woman was admitted to our hospital with right upper quadrant pain with gallbladder wall thickening and multiple liver tumors. Endoscopic ultrasound-guided biopsy revealed small cell carcinomas of both the gallbladder and liver. After 10 cycles of chemotherapy with etoposide and cisplatin, marked shrinkage of the tumors was evident on computed tomography. The patient subsequently underwent hepatectomy and resection of the extrahepatic bile duct and gallbladder with curative intent. Although no viable tumor cells were found in the resected specimens, we confirmed phagocytosis of tumor cells killed by chemotherapy in the resected liver specimen. Therefore, we suspected that the patient had primary small cell carcinoma of the liver that had been successfully treated. This is a rare case of primary small cell carcinoma of the liver that showed pathological complete response to chemotherapy with etoposide and cisplatin.

DOI： 10.11405/nisshoshi.112.2024

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当院における生体肝移植後の胆管狭窄に対する内視鏡治療

友田健, 加藤博也, 内田大輔, 秋元悠, 松本和幸, 山本直樹, 堀口繁, 堤康一郎, 高木章乃夫, 岡田裕之, 八木孝仁

移植 50 ( 4-5 ) 481 - 481 2015.10

Hepatic stellate cells promote upregulation of epithelial cell adhesion molecule and epithelial-mesenchymal transition in hepatic cancer cells Reviewed

Teruya Nagahara, Hidenori Shiraha, Hiroaki Sawahara, Daisuke Uchida, Yasuto Takeuchi, Masaya Iwamuro, Junro Kataoka, Shigeru Horiguchi, Takeshi Kuwaki, Hideki Onishi, Shinichiro Nakamura, Akinobu Takaki, Kazuhiro Nouso, Kazuhide Yamamoto

ONCOLOGY REPORTS 34 ( 3 ) 1169 - 1177 2015.9

Language：English Publishing type：Research paper (scientific journal) Publisher：SPANDIDOS PUBL LTD

Microenvironment plays an important role in epithelial-mesenchymal transition (EMT) and sternness of cells in hepatocellular carcinoma (HCC). Epithelial cell adhesion molecule (EpCAM) is known as a tumor stemness marker of HCC. To investigate the relationship between microenvironment and sternness, we performed an in vitro co-culture assay. Four HCC cell lines (HepG2, Hep3B, HuH-7 and PLC/PRF/5) were co-cultured with the TWNT-1 immortalized hepatic stellate cells (HSCs), which create a microenvironment with HCC. Cell proliferation ability was analyzed by flow cytometry (FCM) and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, while migration ability was assessed by a wound healing assay. Expression of EpCAM was analyzed by immunoblotting and FCM. HCC cell lines were co-cultured with TWNT-1 treated with small interfering RNA (siRNA) for TGF-beta and HB-EGF; we then analyzed proliferation, migration ability and protein expression using the methods described above. Proliferation ability was unchanged in HCC cell lines co-cultured with TWNT-1. Migration ability was increased in HCC cell lines (HepG2, Hep3B, HuH-7 and PLC/PRF/5) directly (216.2 +/- 67.0, 61.0 +/- 22.0, 124.0 +/- 66.2 and 51.5 +/- 40.3%) and indirectly (102.5 +/- 22.0, 84.6 +/- 30.9, 86.1 +/- 25.7 and 73.9 +/- 29.7%) co-cultured with TWNT-1 compared with the HCC uni-culture. Immunoblot analysis revealed increased EpCAM expression in the HCC cell lines co-cultured with TWNT-1. Flow cytometry revealed that the population of E-cadherin(-)/N-cadherin(+) and EpCAM-positive cells increased and accordingly, EMT and stemness in the HCC cell line were activated. These results were similar in the directly and indirectly co-cultured samples, indicating that humoral factors were at play. Conversely, HCC cell lines co-cultured with siRNA-treated TWNT-1 showed decreased migration ability, a decreased population of EpCAM-positive and E-cadherin(-)/N-cadherin(+) cells. Taken together, humoral factors secreted from TWNT-1 promote upregulation of EpCAM and EMT in hepatic cancer cells.

DOI： 10.3892/or.2015.4126

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Walled-off necrosisに対するstep-up approachによる内視鏡的治療成績

秋元悠, 加藤博也, 松本和幸, 内田大輔, 友田健, 山本直樹, 堀口繁, 堤康一郎, 岡田裕之

Gastroenterological Endoscopy 57 ( Suppl.2 ) 2209 - 2209 2015.9

当院におけるmodified FOLFIRINOXの治療成績についての検討

堀口繁, 加藤博也, 水川翔, 矢部俊太郎, 關博之, 秋元悠, 内田大輔, 友田健, 松本和幸, 山本直樹, 堤康一郎, 那須淳一郎, 岡田裕之, 山本和秀

日本消化器病学会雑誌 112 ( 臨増大会 ) A899 - A899 2015.9

デバイス突破を目的としたSoehendra stent retrieverを用いた拡張術

松本和幸, 加藤博也, 堤康一郎, 秋元悠, 内田大輔, 友田健, 山本直樹, 堀口繁, 岡田裕之

Gastroenterological Endoscopy 57 ( Suppl.2 ) 2200 - 2200 2015.9

Endoscopic ultrasonography-guided transjejunal drainage for postoperative pancreatic fistula using forward-viewing echoendoscope. Reviewed

Takeshi Tomoda, Hironari Kato, Yutaka Akimoto, Kazuyuki Matsumoto, Naoki Yamamoto, Yasuhiro Noma, Ryo Harada, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada

Clinical journal of gastroenterology 8 ( 4 ) 228 - 31 2015.8

Language：English Publishing type：Research paper (scientific journal)

There are few reports on endoscopic ultrasonography (EUS)-guided transjejunal drainage. Here, we report a case with postoperative pancreatic fistula treated by endoscopic transjejunal drainage using a forward-viewing (FV) echoendoscope. A 69-year-old woman who had undergone pancreaticoduodenectomy was admitted because of pancreatic fistula. Placement of plastic stents into the pancreatic duct using a double-balloon enteroscope and EUS-guided transgastric drainage failed. We attempted EUS-guided transjejunal drainage using an FV echoendoscope that can advance through the acute-angled intestinal tract safely, and drainage was performed. There were no complications, and follow-up computed tomography showed complete resolution.

DOI： 10.1007/s12328-015-0580-0

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胆管空腸吻合術後の肝内結石治療における細径内視鏡を用いた経口直接胆道鏡の有用性

松本和幸, 堤康一郎, 加藤博也, 秋元悠, 内田大輔, 友田健, 山本直樹, 堀口繁, 八木孝仁, 岡田裕之

胆道 29 ( 3 ) 503 - 503 2015.8

Efficacy of Endoscopic Over 3-branched Partial Stent-in-Stent Drainage Using Self-expandable Metallic Stents in Patients With Unresectable Hilar Biliary Carcinoma. Reviewed International journal

Daisuke Uchida, Hironari Kato, Shinichiro Muro, Yasuhiro Noma, Naoki Yamamoto, Shigeru Horiguchi, Ryo Harada, Koichiro Tsutsumi, Hirofumi Kawamoto, Hiroyuki Okada, Kazuhide Yamamoto

Journal of clinical gastroenterology 49 ( 6 ) 529 - 36 2015.7

Language：English

BACKGROUND: The treatment of biliary stricture is crucially important for continuing stable chemotherapy for unresectable biliary carcinoma; however, there is no consensus regarding the use of hilar biliary drainage. In this study, we examined the efficacy of endoscopic over 3-branched biliary drainage using self-expandable metallic stents (SEMSs) in patients with unresectable malignant hilar biliary stricture (HBS). METHODS: A total of 77 patients with unresectable HBS treated with a SEMS and chemotherapy were retrospectively reviewed. There were 59 patients with cholangiocarcinoma and 18 patients with gallbladder carcinoma. The patients were divided into 2 groups (4- or 3-branched group and 2- or 1-branched group) and compared with respect to the duration of stent patency and overall survival. RESULTS: A comparison of the patients' baseline characteristics showed no significant differences between the 4- or 3-branched group and the 2- or 1-branched group. Neither the duration of patency nor survival time exhibited significant differences between the 2 groups, although, among the patients achieving disease control , the duration of patency period and survival time of the 4- or 3-branched group were significantly higher than those observed in the 2- or 1-branched group (P=0.0231 and 0.0466). CONCLUSIONS: The use of endoscopic over 3-branched biliary drainage with a SEMS may improve the duration of patency in patients with HBS.

DOI： 10.1097/MCG.0000000000000213

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ERCP using a short double-balloon enteroscope in patients with prior pancreatoduodenectomy: higher maneuverability supplied by the efferent-limb route. Reviewed International journal

Koichiro Tsutsumi, Hironari Kato, Shinichiro Muro, Naoki Yamamoto, Yasuhiro Noma, Shigeru Horiguchi, Ryo Harada, Hiroyuki Okada, Kazuhide Yamamoto

Surgical endoscopy 29 ( 7 ) 1944 - 51 2015.7

Language：English

BACKGROUND: In endoscopic retrograde cholangiopancreatography (ERCP) for patients who have undergone a pancreatoduodenectomy (PD) with a Braun anastomosis, two different approaches are available: the afferent-limb route and the efferent-limb route. This study was to clarify the usefulness of a short double-balloon enteroscope (DBE) in ERCP for prior-PD patients, and to reveal which route was optimal for ERCP. METHODS: Seventy-two consecutive patients with a prior PD underwent diagnostic or therapeutic ERCP using the DBE. This retrospective study evaluated the outcome of the ERCP and assessed the shape of the DBE by fluoroscopic imaging to compare the maneuverability of the two routes. RESULTS: In 71 patients (99%) the bilioenteric anastomosis was reached and cholangiography was performed. Treatment was required in 59 patients (83%) and was performed successfully in all. Complications occurred in two patients (3%) with cholangitis. In three patients, the afferent-limb route had to be changed to the efferent-limb route in the procedure. A gentler arc-shaped angulation of the DBE was induced using the efferent-limb route compared to the afferent-limb route (128° (n = 42) vs. 113° (n = 15); p = 0.037), and that was also revealed in 11 patients (15%) who underwent repeated ERCP by each route (123° vs. 96°; p = 0.003). CONCLUSIONS: The short DBE facilitates ERCP in prior-PD patients. Particularly, ERCP using the efferent-limb route can achieve a maneuverable procedure without unnecessary stress, such as scope insertion to the sharp-angled afferent limb and the handling of various accessories through the narrow scope channel with a sense of resistance.

DOI： 10.1007/s00464-014-3889-8

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Successful biliary drainage using a metal stent through the gastric stoma Reviewed

Kazuyuki Matsumoto, Hironari Kato, Koichiro Tsutsumi, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Naoki Yamamoto, Yasuhiro Noma, Shigeru Horiguchi, Hiroyuki Okada, Kazuhide Yamamoto

WORLD JOURNAL OF GASTROENTEROLOGY 21 ( 24 ) 7594 - 7597 2015.6

Language：English Publishing type：Research paper (scientific journal) Publisher：BAISHIDENG PUBLISHING GROUP INC

We report a case of biliary drainage for malignant stricture using a metal stent with an ultrathin endoscope through the gastric stoma. A 78-year-old female was referred to our hospital for jaundice and fever. She had undergone percutaneous endoscopic gastrostomy (PEG) for esophageal obstruction after radiation therapy for cancer of the pharynx. Abdominal contrast-enhanced computed tomography showed a 3-cm enhanced mass in the middle bile duct and dilatation of the intrahepatic bile duct. We initially performed endoscopic retrograde cholangiopancreatography (ERCP) with a trans-oral approach. However, neither the side-viewing endoscope nor the ultrathin endoscope passed through the esophageal orifice. Thus, we eventually performed ERCP via the PEG stoma using an ultrathin endoscope. We performed biliary drainage with a 6F introducer self-expanding metal stent. The cytology findings obtained by brush cytology showed malignancy. Her laboratory results were restored to normal levels after drainage and no complication occurred.

DOI： 10.3748/wjg.v21.i24.7594

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膵疾患の分子病態 Basics and Applications 網羅的糖鎖解析によるIPMNの悪性度診断能の検討

秋元悠, 能祖一裕, 加藤博也, 宮原孝治, 内田大輔, 友田健, 松本和幸, 野間康宏, 山本直樹, 堀口繁, 堤康一郎, 岡田裕之, 山本和秀

膵臓 30 ( 3 ) 268 - 268 2015.5

PNETの集学的治療当院及び関連病院におけるPNET治療についての検討

堀口繁, 加藤博也, 秋元悠, 内田大輔, 松本和幸, 友田健, 野間康宏, 山本直樹, 堤康一郎, 伏見聡一郎, 藤井雅邦, 植木亨, 八木孝仁, 山本和秀

膵臓 30 ( 3 ) 320 - 320 2015.5

胆管空腸吻合術後の肝内結石治療に対するDB-ERCPの有用性と工夫

堤康一郎, 加藤博也, 内田大輔, 秋元悠, 友田健, 松本和幸, 野間康宏, 山本直樹, 堀口繁, 岡田裕之, 山本和秀

Gastroenterological Endoscopy 57 ( Suppl.1 ) 765 - 765 2015.4

巨大結石に対するEPLBDの有用性及び安全性の検討超高齢者に対してもEPLBDは安全に施行可能か?

友田健, 加藤博也, 秋元悠, 内田大輔, 松本和幸, 野間康宏, 山本直樹, 堀口繁, 堤康一郎, 岡田裕之, 山本和秀

Gastroenterological Endoscopy 57 ( Suppl.1 ) 740 - 740 2015.4

Double-balloon enteroscopy for choledochojejunal anastomotic stenosis after hepato-biliary-pancreatic operation. Reviewed International journal

Ichiro Sakakihara, Hironari Kato, Shinichiro Muro, Yasuhiro Noma, Naoki Yamamoto, Ryo Harada, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada, Kazuhide Yamamoto, Hiroshi Sadamori, Takahito Yagi

Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 27 ( 1 ) 146 - 54 2015.1

Language：English

BACKGROUND AND AIM: There have been few reports on the success rate of balloon dilation and stent deployment using endoscopic retrograde cholangiopancreatography by double-balloon enteroscopy (DBE-ERCP) or on the follow-up period after stent removal in patients with a reconstructed digestive tract and stenosis of choledochojejunal anastomosis. The present study was designed to evaluate the usefulness of DBE-ERCP in patients with a reconstructed digestive tract and stenosis of choledochojejunal anastomosis. METHODS: Forty-four patients with stenosis of choledochojejunal anastomosis underwent DBE-ERCP at Okayama University Hospital between April 2008 and January 2012 (107 procedures). Rates of reaching choledochojejunal anastomosis, stent deployment, and restenosis after stent removal were retrospectively evaluated. RESULTS: Insertion of DBE into the choledochojejunal anastomotic site succeeded in 38 of 44 patients (86.4%), and anastomotic dilation and stent deployment succeeded in 36 of 44 patients (81.8%). In 32 of 44 patients (72.7%), their anastomotic stenoses were improved, and they achieved stent removal. After stent removal, restenosis of choledochojejunal anastomosis was detected in seven of 32 patients; however, the resolution of restenosis was achieved in all seven of those patients. CONCLUSION: Dilation of choledochojejunal anastomosis combined with stent deployment using DBE-ERCP seems to be a viable first-line treatment for patients with stenosis of choledochojejunal anastomosis.

DOI： 10.1111/den.12332

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The efficacy and safety of single-session endoscopic ultrasound-guided fine needle aspiration and endoscopic retrograde cholangiopancreatography for evaluation of pancreatic masses. Reviewed International journal

Yasuhiro Noma, Hirofumi Kawamoto, Hironari Kato, Masaya Iwamuro, Ken Hirao, Masakuni Fujii, Koichiro Tsutsumi, Shigeru Horiguchi, Naoki Yamamoto, Ichiro Sakakihara, Takeshi Tomoda, Kazuyuki Matsumoto, Hiroyuki Okada, Kazuhide Yamamoto

Hepato-gastroenterology 61 ( 134 ) 1775 - 9 2014.9

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND/AIMS: There have been limited studies evaluating single-session EUS-FNA and ERCP for evaluation of pancreatic masses. The aim of this study was to determine the safety of single-session EUS-FNA and ERCP, and to compare the diagnostic accuracies of cytodiagnosis by EUS-FNA, ERCP, and their combination. METHODOLOGY: A total of 100 patients with pancreatic masses were prospectively enrolled. All patients underwent single-session EUS-FNA and ERCP. The main outcome measurement was frequency of post-procedural complications. Another measurement was diagnostic accuracy of cytodiagnosis by EUS-FNA, ERCP, and their combination. RESULTS: Procedure-related pancreatitis occurred in 10 patients, but all patients were conservatively managed. Cytodiagnosis by EUS-FNA was significantly superior to ERCP in accuracy. In patients with a pancreatic head mass, 3 cases of false negative EUS-FNA were positive on ERCP. The combination procedures improved accuracy compared with EUS-FNA alone. By contrast, in the subgroup of the pancreatic body or tail mass, the combination of EUS-FNA and ERCP did not improve cytodiagnosis compared to that with EUS-FNA alone. CONCLUSIONS: Single-session EUS-FNA and ERCP appears to be as safe as performing each procedure separately. EUS-FNA should be considered the principal procedure for cytodiagnosis. ERCP has only a complementary role in patients with pancreatic head mass.

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Papers - HORIGUCHI Shigeru