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Hepatobiliary & Pancreatic Diseases International 2017年第6期16卷 659-661页

作者： Hirotsugu Maruyama Kazunari Tominaga Kunihiro Kato Satoshi Sugimori Masatsugu Shiba toshio watanabe Yasuhiro Fujiwara Department of Gastroenterology Osaka City University Graduate School of Medicine 1-4-3 Asahimachi Abeno-ku Osaka 545-8585 Japan

To the Editor:Biliary drainage is most frequently performed among endoscopic procedures using pancreatobiliary endoscopy.A large-diameter metallic stent can significantly extend the patency period rather than a plastic stent for extrahepatic biliary stricture.;However,the optimal drainage for the hilar biliary obstruction is still controversial.

关键词： Safety and efficacy of transpapillary bridged bilateral side-by-side stenting for unresectable malignant hilar biliary obstruction

Quality of ulcer healing in gastrointestinal tract:Its pathophysiology and clinical relevance

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World Journal of Gastroenterology 2012年第35期18卷 4811-4822页

作者： Tetsuo Arakawa toshio watanabe Tetsuya Tanigawa Kazunari Tominaga Yasuhiro Fujiwara Kenichi Morimoto Department of Gastroenterology Osaka City University Graduate School of Medicine

In this paper, we review the concept of quality of ulcer healing （QOUH） in the gastrointestinal tract and its role in the ulcer recurrence. In the past, peptic ulcer disease （PUD） has been a chronic disease with a cycle of repeated healing/remission and recurrence. The main etiological factor of PUD is Helicobacter pylori （H. pylorl~, which is also the cause of ulcer recur- rence. However, H. pylori-negative ulcers are pres- ent in 12%-20% of patients; they also recur and are on occasion intractable. QOUH focuses on the fact that mucosal and submucosal structures within ulcer scars are incompletely regenerated. Within the scars of healed ulcers, regenerated tissue is immature and with distorted architecture, suggesting poor QOUH. The abnormalities in mucosal regeneration can be the basis for ulcer recurrence. Our studies have shown that persistence of macrophages in the regenerated area plays a key role in ulcer recurrence. Our studies in a rat model of ulcer recurrence have indicated that proinflammatory cytokines trigger activation of macro- phages, which in turn produce increased amounts of cytokines and chemokines, which attract neutrophils to the regenerated area. Neutrophils release proteolytic enzymes that destroy the tissue, resulting in ulcer re- currence. Another important factor in poor QOUH can be deficiency of endogenous prostaglandins and a defi- ciency and/or an imbalance of endogenous growth fac- tors. Topically active mucosal protective and antiulcer drugs promote high QOUH and reduce inflammatory cell infiltration in the ulcer scar. In addition to PUD, the concept of QOUH is likely applicable to inflammatory bowel diseases including Crohn＇s disease and ulcer- ative colitis.

关键词： Quality of ulcer healing Peptic ulcer dis-ease Recurrence Prostaglandin Cytokines Growthfactors

Estimated Genetic Variance Explained by Single Nucleotide Polymorphisms of Different Minor Allele Frequencies for Carcass Traits in Japanese Black Cattle

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Journal of Biosciences and Medicines 2016年第5期4卷 89-97页

作者： Shinichiro Ogawa Hirokazu Matsuda Yukio Taniguchi toshio watanabe Yoshikazu Sugimoto Hiroaki Iwaisaki Graduate School of Agriculture Kyoto University Kyoto Japan National Livestock Breeding Center Nishigo Fukushima Japan Shirakawa Institute of Animal Genetics Japan Livestock Technology Association Nishigo Fukushima Japan

Japanese Black cattle are a beef breed and well known to excel in carcass quality, but the details of genetic architectures for carcass traits in beef breeds including this breed are still poorly understood. The objective of this study was to estimate the degree of additive genetic variance explained by single nucleotide polymorphism (SNP) marker groups with different levels of minor allele frequency (MAF) for marbling score and carcass weight in Japanese Black cattle. Phenotypic data on 872 fattened steers with the genotype information about 40,000 autosomal SNPs were analyzed using two different statistical models: one considering only SNPs selected based on MAF (model 1) and the other also considering all remaining SNPs as the different term (model 2). All available SNPs were classified into 10 groups based on their MAFs. For both traits, the estimated proportions of additive genetic variance explained by SNPs selected based on their MAFs using model 1 were always higher than the estimated ones using model 2. For carcass weight, relatively high values of the proportion of the additive genetic variance were estimated when using SNPs with MAFs which were in the ranges of 0.20 to 0.25 and 0.25 to 0.30, which may be partly due to the three previously-reported quantitative trait loci candidate regions. The results could have provided some information on the genetic architecture for the carcass traits in Japanese Black cattle, although its validity may be limited, mainly due to the sample size and the use of simpler statistical models in this study.

关键词： Additive Genetic Variance Carcass Trait Japanese Black Cattle Minor Allele Frequency Single Nucleotide Polymorphism

Ab Initio MO Studies of the Weak Interaction in Cu-Histamine-Tyrosine Complex as an Model of Pseudoazurin M16Y Mutant

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Ab Initio MO Studies of the Weak Interaction in Cu-Histamine...

Management of gastric fundal varices without gastro-renal shunt in 15 patients

2007年全国核反应会暨生物物理与核物理学科交叉前沿研讨会

作者： Umpei Nagashima toshio watanabe Takamitsu Kohzuma Yoshiko Uchida Osamu Yamauchi Research Institute for Computational Science National Institute of Advanced Industrial Science and Technology1-1-1 UmezonoTsukubaIbaraki 305-8568Japan Institute of Applied Beam Science Ibaraki University2-1-1 BunkyoMitoIbaraki 310-8512Japan Faculty of Engineering Kansai University2-1-1 Ryozenji-choTakatsukiOsaka 569-1095Japan

Noncovalent weak interactions play important roles in biological *** bonding and aromatic ring stacking interactions are well established weak interaction in the structure and function of proteins and nucleic ***,the biological significance of a weak interaction between metal ion coordinated imidazole ring and the phenyl ring of a phenylalanine residue has been found in plastocyanin from fern *** reported the spectroscopic and electrochemical studies of the M16F mutant of a blue copper protein,

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World Journal of Gastroenterology 2008年第3期14卷 448-453页

作者： Natsuhiko Kameda Kazuhide Higuchi Masatsugu Shiba Kaori Kadouchi Hirohisa Machida Hirotoshi Okazaki Tetsuya Tanigawa toshio watanabe Kazunari Tominaga Yasuhiro Fujiwara Kenji Nakamura Tetsuo Arakawa Department of Gastroenterology Graduate School of Medicine Osaka City University Osaka 569-8686 Japan Second Department of Internal Medicine Osaka Medical College Osaka 569-8686 Japan Department of Radiology Graduate School of Medicine Osaka City University Osaka 569-8686 Japan

AIM:To examine the portal hemodynamics of gastric fundal varices (GV) without gastro-renal shunt (GRS), and to retrospectively investigate the effects of various kinds of treatment on eradication. METHODS: Ninety-four liver cirrhosis patients at high- risk of GV were treated in our hospital and enrolled in this study. We retrospectively examined their characteristics, liver function, and portal hemodynamics of GV. We performed balloon-occluded retrograde transvenous obliteration (BRTO) at first. If it was not technically possible to perform BRTO, endoscopic injection sclerotherapy using α-cyanoacrylate glue (CA) or percutaneous transhepatic obliteration (PTO) was performed. RESULTS: Among the 94 patients, a GRS was present in 79 (84.0%), and absent in the remaining 15 (16.0%). The subphrenic vein was connected to the inferior vena cava as the drainage vein in 13 (86.7%) out of the 15 cases without GRS. We performed BRTO in 6 patients, CA in 4 patients and PTO in 5 patients. The eradication rate was 100% for each procedure, but the rate of early recurrence within 6 mo was 16.7% for BRTO, 50.0% for CA and 40.0% for PTO, respectively. CONCLUSION: We should examine the hemodynamics before treatment of GV irrespective of the existence of GRS. If this hemodynamic examination reveals that the drainage vein connects directly to the inferior vena cava in GV without GRS, BRTO may be an effective treatment for GV with GRS.

关键词： Gastric fundal varices Gastro-renal shunt Balloon-occluded retrograde transvenous obliteration

Angle of covered self-expandable metallic stents after placement is a risk factor for recurrent biliary obstruction

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World Journal of Hepatology 2022年第5期14卷 992-1005页

作者： Kojiro Tanoue Hirotsugu Maruyama Yuki Ishikawa-Kakiya Yosuke Kinoshita Kappei Hayashi Masafumi Yamamura Masaki Ominami Yuji Nadatani Shusei Fukunaga Koji Otani Shuhei Hosomi Fumio Tanaka Noriko Kamata Yasuaki Nagami Koichi Taira toshio watanabe Yasuhiro Fujiwara Department of Gastroenterology Osaka City University Graduate School of MedicineOsaka 545-8585Japan

BACKGROUND Studies have shown that covered self-expandable metallic stents(CSEMS)with a low axial forces after placement can cause early recurrent biliary obstruction(RBO)due to precipitating sludge *** To ascertain whether the angle of CSEMS after placement is a risk factor for RBO in unresectable distal malignant biliary obstruction(MBO).METHODS Between January 2010 and March 2019,261 consecutive patients underwent selfexpandable metallic stent insertion by endoscopic retrograde cholangiopancreatography at our facility,and 87 patients were included in this *** evaluated the risk factors for RBO,including the angle of CSEMS after placement as the primary *** measured the obtuse angle of CSEMS after placement on an abdominal radiograph using the SYNAPSE PACS *** also evaluated technical and functional success,adverse events,time to RBO(TRBO),non-RBO rate,survival time,cause of RBO,and reintervention procedure as secondary *** We divided the patients into two cohorts based on the presence or absence of *** angle of CSEMS after placement(per 1°and per 10°)was evaluated using the multivariate Cox proportional hazard analysis,which was an independent risk factor for RBO in unresectable distal MBO[hazard ratio,0.97 and 0.71;95%confidence interval(CI):0.94-0.99 and 0.54-0.92;P=0.01 and 0.01,respectively].For early diagnosis of RBO,the cut-off value of the angle of CSEMS after placement using the receiver operating characteristic curve was 130°[sensitivity,50.0%;specificity 85.5%;area under the curve 0.70(95%CI:0.57-0.84)].TRBO in the<130°angle group was significantly shorter than that in the≥130°angle group(P<0.01).CONCLUSION This study suggests that the angle of the CSEMS after placement for unresectable distal MBO is a risk factor for *** novel results provide pertinent information for future stent management.

关键词： Covered self-expandable metallic stents Recurrent biliary obstruction Malignant biliary obstruction Endoscopic retrograde cholangiopancreatography Angle Axial force

A case of mucosa-associated lymphoid tissue lymphoma forming multiple lymphomatous polyposis in the small intestine

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World Journal of Gastroenterology 2007年第9期13卷 1453-1457页

作者： Naoto Hirata Kazunari Tominaga Kensuke Ohta Kaori Kadouchi Hirotoshi Okazaki Tetsuya Tanigawa Masatsugu Shiba toshio watanabe Yasuhiro Fujiwara Shiro Nakamura Nobuhide Oshitani Kazuhide Higuchi Tetsuo Arakawa Department of Gastroenterology Osaka City University Graduate School of Medicine 1-4-3 Asahimachi Abeno-ku Osaka 545-8585 Japan Department of Hematology Osaka City University Graduate School of Medicine1-4-3 Asahimachi Abeno-kuOsaka 545-8585 Japan Department of Gastroenterology Rinku General Medical Center 2-3 Rinkuouraikita Izumisano Osaka 598-0048Japan

A 50-year old woman suffering from diabetes had a CT scan that revealed a diffuse thickening of small intestinal wall and swollen paraaortic lymph nodes. An esophago gastroduodenoscopy (EGD) confirmed multiple polypoid lesions in the duodenum and small intestine, and conventional histological testing revealed non-specific inflammatory changes. Further examinations including the immunohistochemical profiles of the biopsied specimens led us to diagnose the lesion as a marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue type, forming multiple lymphomatous polyposis sequentially spreading from duodenal bulb to terminal ileum. According to Lugano’s classification, its staging was clinically diagnosed as stage Ⅱ. Two courses of a standard CHOP (cyclophosphamide, doxorubicin hydrochloride, vincristine sulfate, and predonisolone) regimen with rituximab reduced the lesion and the patient had a almost complete response. A 5-year follow- up EGD and histological examinations detected no recurrence of the disease.

关键词： Intestinal lymphoma Hucosa-associated lymphoid tissue lymphoma Hultiple lymphomatous polyposis

Successful treatment of giant rectal varices by modified percutaneous transhepatic obliteration with sclerosant:Report of a case

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World Journal of Gastroenterology 2006年第33期12卷 5408-5411页

作者： Hirotoshi Okazaki Kazuhide Higuchi Masatsugu Shiba Shirou Nakamura Tomoko Wada Kazuki Yamamori Ai Machida Kaori Kadouchi Akihiro Tamori Kazunari Tominaga toshio watanabe Yasuhiro Fujiwara Kenji Nakamura Tetsuo Arakawa Department of Gastroenterology Osaka City University Graduate School of Medicine Osaka Japan Department of Gastroenterology Osaka City University Graduate School of Medicine Osaka Japan Department of Radiology Osaka City University Graduate School of Medicine Osaka Japan

We present a female patient with continuous melena, diagnosed with rectal variceal bleeding. She had a history of esophageal varices, which were treated with endoscopic therapy. Five years after the treatment of esophageal varices, continuous melena occurred. Since colonoscopy showed that the melena was caused by giant rectal varices, we thought that they were not suitable to receive endoscopic treatment. We chose the modified percutaneous transhepatic obliteration with sclerosant, which is one of the interventional radiology techniques but a new clinical procedure for rectal varices. After the patient received this therapy, her condition of rectal varices was markedly improved.

关键词： Rectal varices Modified percutaneoustranshepatic obliteration with sclerosant

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TCDD的密度泛函理论研究

化学学报 2003年第6期61卷 840-845页

作者：王遵尧吴迎春菊池修渡边寿雄盐城工学院化工系盐城224003 日本筑波大学化学系日本筑波3058571

用B3LYP/6 3 11G 方法全优化计算 2 2个四氯二苯并对二英 (简称TCDD)分子 ,得到几何构型、总能量、标准熵、标准焓和标准自由能 .将 2 ,3 ,7,8 TCDD的计算构型与X射线衍射实验测定值进行了比较 .计算结果表明 ,总能量、标准焓和标准... 详细信息

用B3LYP/6 3 11G 方法全优化计算 2 2个四氯二苯并对二英 (简称TCDD)分子 ,得到几何构型、总能量、标准熵、标准焓和标准自由能 .将 2 ,3 ,7,8 TCDD的计算构型与X射线衍射实验测定值进行了比较 .计算结果表明 ,总能量、标准焓和标准自由能与氯原子置换位置的相关性很高 (r>0 997) .1,3 ,6,8 TCDD的总能量和自由能最低 ,即最稳定 .以此为参照 ,得到异构体的总能量的相对稳定性顺序和自由能的相对稳定性顺序 .1,3 ,7,9 TCDD的稳定性次之 ,1,3 ,7,8 TCDD居第三 .将这二个顺序与焚烧炉产生的TCDD异构体和合成的异构体对的生成百分比进行了比较。

关键词： TCDD 密度泛函理论研究四氯二苯并对二噁英热力学相对稳定性环境污染物

Risk factors for bleeding after endoscopic mucosal resection

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World Journal of Gastroenterology 2005年第46期11卷 7335-7339页

作者： Masatsugu Shiba Kazuhide Higuchi Kaori Kadouchi Ai Montani Kazuki Yamamori Hirotoshi Okazaki Makiko Taguchi Tomoko Wada Atsushi Itani toshio watanabe Kazunari Tominaga Yoshihiro Fujiwara Tomoshige Hayashi Kei Tsumura Tetsuo Arakawa Department of GastroenterologyOsaka City University Medical School OsakaJapan Department of GastroenterologyOsaka City University Medical School OsakaJapan Department of Preventive Medicine and Environmental HealthOsaka City University Medical SchoolOsakaJapan Department of GastroenterologyOsaka City University Medical School OsakaJapan Department of CardiologyOsaka City University Medical SchoolOsakaJapan

AIM： To clarify the risk factors for bleeding after endoscopic mucosal resection （EMR）. METHODS： A total of 297 consecutive patients who underwent EMR were enrolled. Some of the patients had multiple lesions. Bleeding requiring endoscopic treatment was defined as bleeding after EMR. Odds ratios （OR） with 95% confidence intervals （CI）, calculated by logistic regression with multivariate adjustments for covariates, were the measures of association. RESULTS： Of the 297 patients, 57 （19.2%） patients with bleeding after EMR were confirmed. With multivariate adjustment, the cutting method of EMR, diameter, and endoscopic pattern of the tumor were associated with the risk of bleeding after EMR. The multivariate-adjusted OR for bleeding after EMR using endoscopic aspiration mucosectomy was 3.07 （95%CI, 1.59-5.92） compared with strip biopsy. The multiple-adjusted OR for bleeding after EMR for the highest quartile （16-50 mm） of tumor diameter was 5.63 （95%CI, 1.84-17.23） compared with that for the lowest （4-7 mm）. The multiple-adjusted OR for bleeding after EMR for depressed type of tumor was 4.21 （95%CI, 1.75-10.10） compared with elevated type. CONCLUSION： It is important to take tumor charactedstics （tumor size and endoscopic pattern） and cutting method of EMR into consideration in predicting bleeding after EMR.

关键词： Endoscopic mucosal resection Bleeding Tumor characteristics Cutting method