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| 1 | Retrospective cohort study Lower incidence of complications in endoscopic nasobiliary drainage for hilar cholangiocarcinoma显示文摘AIM:To identify the most effective endoscopic biliary drainage technique for patients with hilar cholangiocarcinoma.METHODS:In total,118 patients with hilar cholangiocarcinoma underwent endoscopic management[endoscopic nasobiliary drainage(ENBD)or endoscopic biliary stenting]as a temporary drainage in our institution between 2009 and 2014.We retrospectively evaluated all complications from initial endoscopic drainage to surgery or palliative treatment.The risk factors for biliary reintervention,post-endoscopic retrograde cholangiopancreatography(post-ERCP)pancreatitis,and percutaneous transhepatic biliary drainage(PTBD)were also analyzed using patient-and procedure-related characteristics.The risk factors for bilateral drainage were examined in a subgroup analysis of patients who underwent initial unilateral drainage.RESULTS:In total,137 complications were observed in92(78%)patients.Biliary reintervention was required in 83(70%)patients.ENBD was significantly associated with a low risk of biliary reintervention[odds ratio(OR)=0.26,95%CI:0.08-0.76,P=0.012].Post-ERCP pancreatitis was observed in 19(16%)patients.An absence of endoscopic sphincterotomy was significantly associated with post-ERCP pancreatitis(OR=3.46,95%CI:1.19-10.87,P=0.023).PTBD was required in 16(14%)patients,and Bismuth type III or IV cholangiocarcinoma was a significant risk factor(OR=7.88,95%CI:1.33-155.0,P=0.010).Of 102 patients with initial unilateral drainage,49(48%)required bilateral drainage.Endoscopic sphincterotomy(OR=3.24,95%CI:1.27-8.78,P=0.004)and Bismuth II,III,or IV cholangiocarcinoma(OR=34.69,95%CI:4.88-736.7,P<0.001)were significant risk factors for bilateral drainage.CONCLUSION:The endoscopic management of hilar cholangiocarcinoma is challenging.ENBD should be selected as a temporary drainage method because of its low risk of complications. | Kazumichi Kawakubo Hiroshi Kawakami Masaki Kuwatani Shin Haba Taiki Kudo Yoko A Taya Shuhei Kawahata Yoshimasa Kubota Kimitoshi Kubo Kazunori Eto Nobuyuki Ehira Hiroaki Yamato Manabu Onodera Naoya Sakamoto | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，9： | 26 |
| 2 | Prevention of esophageal strictures after endoscopic submucosal dissection显示文摘Endoscopic mucosal resection(EMR) and endoscopic submucosal dissection(ESD) have recently been accepted as less invasive methods for treating patients with early esophageal cancers such as squamous cell carcinoma and dysplasia of Barrett's esophagus.However,the large defects in the esophageal mucosa often cause severe esophageal strictures,which dramatically reduce the patient's quality of life.Although preventive endoscopic balloon dilatation can reduce dysphagia and the frequency of dilatation,other approaches are necessary to prevent esophageal strictures after ESD.This review describes several strategies for preventing esophageal strictures after ESD,with a particular focus on anti-inflammatory and tissue engineering approaches.The local injection of triamcinolone acetonide and other systemic steroid therapies are frequently used to prevent esophageal strictures after ESD.Tissue engineering approaches for preventing esophageal strictures have recently been applied in basic research studies.Scaffolds with temporary stents have been applied in five cases,and this technique has been shown to be safe and is anticipated to prevent esophageal strictures.Fabricated autologous oral mucosal epithelial cell sheets to cover the defective mucosa similarly to how commercially available skin products fabricated from epidermal cells are used for skin defects or in cases of intractable ulcers.Fabricated autologous oralmucosal-epithelial cell sheets have already been shown to be safe. | Shinichiro Kobayashi Nobuo Kanai Takeshi Ohki Ryo Takagi Naoyuki Yamaguchi Hajime Isomoto Yoshiyuki Kasai Takahiro Hosoi Kazuhiko Nakao Susumu Eguchi Masakazu Yamamoto Masayuki Yamato Teruo Okano | 2014 | World Journal of Gastroenterology2014，20，41： | 12 |
| 3 | Cell sheet technology for regeneration of esophageal mucosa显示文摘The progress of tissue-engineering technology has realized development of new therapies to treat various disorders by using cultured cells. Cell-and tissue-based therapies have been successfully applied to human patients, and several tissue-engineered products have been approved by the regulatory agencies and are commercially available. In the review article, we describe our experience of development and clinical application of cell sheet-based regenerative medicine.Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) have been shown to be useful for removal of gastrointestinal neoplasms with less invasiveness compared with open surgery, especially in esophageal surgery. However, postoperative inflammation and stenosis are major complications observed after intensive mucosal resection. Therefore, we have developed novel regenerative medicine to prevent such complications and promote wound healing of esophageal mucosa after EMR or ESD. Transplantable oral mucosal epithelial cell sheets were fabricated from patients' own oral mucosa. Immediately after EMR or ESD, fabricated autologous cell sheets were endoscopically transplanted to the ulcer sites. We performed a preclinical study with a canine model. In human clinical settings, cell culture and cell sheet fabrication were performed in clean rooms according to good manufacturing practice guidelines, and pharmaceutical drugs were used as supplements to culture medium in place of research regents used in animal study. We believe that cell-based regenerative medicine would be useful to improve quality of life of patients after EMR or ESD. | Ryo Takagi Masayuki Yamato Nobuo Kanai Daisuke Murakami Makoto Kondo Takaaki Ishii Takeshi Ohki Hideo Namiki Masakazu Yamamoto Teruo Okano | 2012 | World Journal of Gastroenterology2012，18，37： | 9 |
| 4 | Three cases of retroperitoneal schwannoma diagnosed by EUS-FNA显示文摘Schwannomas are peripheral nerve tumors that are typically solitary and benign.Their diagnosis is largely based on surgically resected specimens.Recently,a number of case reports have indicated that retroperitoneal schwannomas could be diagnosed with endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA).We report the diagnosis of three cases of schwannoma using EUS-FNA.Subjects were two males and one female,ages 22,40,and 46 years,respectively,all of whom were symptom-free.Imaging findings showed well-circumscribed round tumors.However,as the tumors could not be diagnosed using these findings alone,EUS-FNA was performed.Hematoxylin-eosin staining of the resulting tissue fragments revealed bland spindle cells with nuclear palisading.There was no disparity in nuclear sizes.Immunostaining revealed S-100 protein positivity and all cases were diagnosed as schwannomas.Ki-67 indexes were 3%-15%,2%-3%,and 3%,respectively.No case showed any signs of malignancy.As most schwannomas are benign tumors and seldom become malignant,we observed these patients without therapy.All tumors demonstrated no enlargement and no change in characteristics.Schwannomas are almost always benign and can be observed following diagnosis by EUS-FNA. | Taiki Kudo Hiroshi Kawakami Masaki Kuwatani Nobuyuki Ehira Hiroaki Yamato Kazunori Eto Kanako Kubota Masahiro Asaka | 2011 | World Journal of Gastroenterology2011，17，29： | 8 |
| 5 | Integrated in-process chatter monitoring and automatic suppression with adaptive pitch control in parallel turning显示文摘 | Shuntaro Yamato Yuki Yamada Kenichi Nakanishi Norikazu Suzuki Hayato Yoshioka Yasuhiro Kakinuma | 2018 | Advances in Manufacturing2018，6，3： | 2 |
| 6 | Association of primary biliary cirrhosis with idiopathic thrombocytopenic purpura显示文摘Although both primary biliary cirrhosis (PBC) and idiopathic thrombocytopenic purpura (ITP) are autoimmune diseases, the association of the 2 diseases is rare. Here, we report a case of ITP that developed during the follow-up of PBC in a 74-year- old man. The patient had been diagnosed with PBC 12 years previously, and had received treatment with ursodeoxycholic acid. The platelet count decreased from approximately 60 × 109/L to 8 × 109/L, and the association of decompensated liver cirrhosis (PBC) with ITP was diagnosed. Steroid and immune gamma globulin therapy were successful in increasing the platelet count. Interestingly, human leukocyte antigen genotyping detected the alleles DQB10601 and DRB10803, which are related to both PBC and ITP in Japanese patients. This case suggests common immunogenetic factors might be involved in the development of PBC and ITP. | Nobuyuki Toshikuni Ryumei Yamato Haruhiko Kobashi Ken Nishino Nobu Inada Ritsuko Sakanoue Mitsuhiko Suehiro Yoshinori Fujimura Gotaro Yamada | 2008 | World Journal of Gastroenterology2008，14，15： | 2 |
| 7 | Influence of the safety and diagnostic accuracy of preoperative endoscopic ultrasound-guided fine-needle aspiration for resectable pancreatic cancer on clinical performance显示文摘AIM:To evaluate the safety and diagnostic accuracy of endoscopic ultrasound-guided fine-needle aspiration(EUS-FNA)in a cohort of pancreatic cancer patients.METHODS:Of 213 patients with pancreatic cancer evaluated between April 2007 and August 2011,82were thought to have resectable pancreatic cancer on the basis of cross-sectional imaging findings.Of these,54 underwent EUS-FNA before surgery(FNA+group)and 28 underwent surgery without preoperative EUSFNA(FNA-group).RESULTS:All 54 lesions were visible on EUS,and all54 attempts at FNA were technically successful.The diagnostic accuracy according to cytology and histology findings was 98.1%(53/54)and 77.8%(42/54),respectively,and the total accuracy was 98.1%(53/54).One patient developed mild pancreatitis after EUS-FNA but was successfully treated by conservative therapy.No severe complications occurred after EUS-FNA.In the FNA+and FNA-groups,the median relapse-free survival(RFS)was 742 and 265 d,respectively(P=0.0099),and the median overall survival(OS)was1042 and 557 d,respectively(P=0.0071).RFS and OS were therefore not inferior in the FNA+group.These data indicate that the use of EUS-FNA did not influence RFS or OS,nor did it increase the risk of peritoneal recurrence.CONCLUSION:In patients with resectable pancreatic cancer,preoperative EUS-FNA is a safe and accurate diagnostic method. | Taiki Kudo Hiroshi Kawakami Masaki Kuwatani Kazunori Eto Shuhei Kawahata Yoko Abe Manabu Onodera Nobuyuki Ehira Hiroaki Yamato Shin Haba Kazumichi Kawakubo Naoya Sakamoto | 2014 | World Journal of Gastroenterology2014，20，13： | 2 |
| 8 | A new mitochondrial DNA mutation associated with non-insulin-dependent diabetes mellitus显示文摘 | Nakagawa Y Ikegami H Yamato E | | 0，，： | 2 |
| 9 | Thermo-responsive drugdelivery from polymeric micelles constructed block copolymers of Poly( N -isoproplylacryl amide) and Poly(butylmethacrylate)显示文摘 | Chung J E Yokoyama M Yamato M | 1999 | J Control Release1999，62，： | 2 |
| 10 | Cell sheet engineering:Recreating tissues without biodegradable scaffolds显示文摘 | Yang J Yamato M Kohno C | 2005 | Biomaterials2005，26，33： | 1 |
| 11 | Membrane damage due to lipid oxidation 显示文摘 | Niki E Yamato Y komouro E | 1991 | Am J Clin Nutr1991，，： | 1 |
| 12 | Smad7 is an Activin- inducibe inhibitor of activin-induced growth arrest and apoptosis in mouse B cell 显示文摘 | Ishisaki A Yamato K Nakao A | 1998 | J Biol Chen1998，273，24： | 1 |
| 13 | Protective effect of lafutidine,a novel H2-receptor antagonist,on reflux esophagitis in rats through capsaicin-sensitive afferent neurons显示文摘 | Nagahama K Yamato M Kato S | | 0，，01： | 1 |
| 14 | Temperature- responsive cell culture surfaces for regenerative medicine with eellsheet engineering 显示文摘 | Yamato M Akiyama Y Kobayashi J | 2007 | Prog Polym Sei2007，32，89： | 1 |
| 15 | Rapid cell sheet detachment from poly (N-isopropylacrylamide)-grafted porous cell culture membranes显示文摘 | Kwon OH Kikuchi A Yamato M | 2000 | J Biomed Mater Res2000，50，1： | 1 |
| 16 | Limbal epithelial side-population cells have stem cell-like properties,including quiescent state显示文摘 | Umemoto T Yamato M Nishida K | 2006 | Stem Cells2006，24，1： | 1 |
| 17 | Periodontal rege- neration with multi-layered periodontal ligament-derived cell sheets in a canine model 显示文摘 | Iwata T Yamato M Tsuchioka H | 2009 | Biomaterials2009，30，14： | 1 |
| 18 | Validation of human periodontal ligament-derived cel s as a reliable source for cytotherapeutic use显示文摘 | Iwata T Yamato M Zhang Z | | 0，，12： | 1 |
| 19 | Cell sheet engi- neering: A unique nanoteehnology for scaffold-free tissue re- construction with clinical applications in regenerative medi- cine显示文摘 | Elloumi-Hannaehi I Yamato M Okano T | 2010 | J Intern Med2010，267，1： | 1 |
| 20 | Fabrication of paisatile cardiac tissue grafts using a novel 3-dimensional cell sheet manipulation technique and temperature-responsive cell culture surfaces显示文摘 | Shimizu T Yamato M Isoi Y | 2002 | Cite Res2002，90，3： | 1 |
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