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How Group Heuristics Promotes Cooperative Behavior in Social Dilemma SituationmExploration of Group Heuristics Effects on the Basis of Computer Simulation

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Computer Technology and Application 2012年第10期3卷 699-705页

作者： atsuo murata saki kubo naoki hata Dept. of lntelligent Mechanical Systems Division of lndustrial Innovation Sciences Graduate School of Natural Science andTechnology Okayama University Okayama 700-8530 Japan

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Comparison of clinicopathological characteristics between resected ampullary carcinoma and carcinoma of the second portion of the duodenum

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World Journal of Gastrointestinal Surgery 2022年第11期14卷 1219-1229页

作者： Kohei Nishio Kenjiro Kimura Akihiro murata Go Ohira Hiroji Shinkawa Shintaro Kodai Ryosuke Amano Shogo Tanaka Sadatoshi Shimizu Shigekazu Takemura Akishige Kanazawa Shoji kubo Takeaki Ishizawa Department of Hepato-Biliary-Pancreatic Surgery Osaka Metropolitan UniversityOsaka 5458585Japan Department of HepatoBiliary-Pancreatic Surgery Osaka City General HospitalOsaka 5340021Japan

BACKGROUND Few studies compared the oncological and biological characteristics between ampullary carcinoma(AC) and cancer of the second portion of the duodenum(DC-Ⅱ), although both tumors arise from anatomically close *** To elucidate differences in clinicopathological characteristics, especially the patterns of lymph node metastasis(LNM), between AC and DC-Ⅱ.METHODS This was a retrospective cohort study of 80 patients with AC and 27 patients with DC-Ⅱ who underwent pancreaticoduodenectomy between January 1998 and December 2018 in two institutions. Clinicopathological factors, LNM patterns, and prognosis were compared between the two *** The patients with AC and DC-Ⅱ did not exhibit significant differences in 5-year overall survival(66.0% and 67.1%, respectively) and 5-year relapse-free survival(63.5% and 62.2%, respectively). Compared to the patients with DC-Ⅱ, the rate of preoperative biliary drainage was higher(P = 0.042) and the rates of digestive symptoms(P = 0.0158), ulcerative-type cancer(P < 0.0001), large tumor diameter(P < 0.0001), and advanced tumor stage(P = 0.0019) were lower in the patients with AC. The LNM rates were 27.5% and 40.7% in patients with AC and DC-Ⅱ,respectively, without significant difference(P = 0.23). The rates of LNM to hepatic nodes(N-He)and pyloric nodes(N-Py) were significantly higher in patients with DC-Ⅱ than in those with AC(metastasis to N-HE: 18.5% and 5% in patients with DC-Ⅱ and AC, respectively;P = 0.0432;metastasis to N-Py: 11.1% and 0% in patients with DC-Ⅱ and AC, respectively;P = 0.0186)CONCLUSION Although there were no significant differences in the prognosis and recurrence rates between the two groups, metastases to N-He and N-Py were more frequent in patients with DC-Ⅱ than in those with AC.

关键词： Ampulla of Vater Duodenum Lymphatic metastasis pattern Lymphatic metastasis station Lymph node excision Neoplasm Pancreaticoduodenectomy

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Plasma copeptin concentration is a predictor of tolvaptan efficacy in patients with hepatic ascites

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Portal Hypertension & Cirrhosis 2023年第3期2卷 109-114页

作者： Fumimasa Tomooka Kei Moriya Takahiro kubo Akihiko Shibamoto Jyunya Suzuki Satoshi Iwai Soichi Takeda Yuki Fujimoto Masahide Enomoto Koji murata Yuki Tsuji Yukihisa Fujinaga Koh Kitagawa Norihisa Nishimura Hiroaki Takaya Kosuke Kaji Hideto Kawaratani Tadashi Namisaki Takemi Akahane Akira Mitoro Hitoshi Yoshiji Department of Gastroenterology and Hepatology Nara Medical UniversityKashiharaJapan Department of Gastroenterology Nara Prefectural General Medical CenterShichijo-NishimachiJapan

Aims:No solid evidence-based opinion was raised regarding predictors of the degree of ascites reduction with *** retrospective cohort study aimed to examine whether serum copeptin concentration is a useful predictor of ***:The study population consisted of 80 patients with liver cirrhosis treated with tolvaptan for hepatic ascites effusions at Nara Medical University Hospital from May 2014 to December ***-three patients who lost>1.5 kg of body weight in the first week after starting tolvaptan were classified as good responders and the remaining 37 as poor *** laboratory parameters were measured immediately before the start of tolvaptan therapy to examine factors associated with predicting its ***:In the univariate analysis,no significant differences with respect to age(67.6 vs.69.8 years,p>0.05),sex,body mass index(24.8 vs.23.7 kg/m^(2),p>0.05),Child-Pugh score(9.4 vs.9.7,p>0.05),and Model for End-stage Liver Disease score(11 vs.12,p>0.05)were found between the two ***,aspartate transferase and alanine transaminase(ALT)levels were significantly lower in the good response group(52.9±56.3 vs.68.8±50.7 U/L,p<0.05;26.2±30.6 vs.40.5±33.5 U/L,p<0.01),whereas serum copeptin and serum sodium concentrations were significantly higher(57.1±15.0 vs.45.8±16.0 pg/mL,p<0.01;136.3±3.4 vs.133.8±5.8 mEq/L,p<0.05).In the multivariate analysis,serum copeptin concentration and ALT were statistically significant factors(p<0.01,p<0.05).Regression analysis of the association between the tolvaptan efficacy for refractory ascites and pretreatment serum copeptin concentration showed that a copeptin concentration cutoff of 45.9 pg/mL could predict treatment efficacy with a sensitivity,specificity,and area under the curve of 76.7%,59.5%,and 0.71%,***:Serum copeptin concentration may be a predictor of tolvaptan efficacy for refractory ascites effusion in Japanese patients with liver cirrhosis.

关键词： ascites copeptin decompensated liver cirrhosis diuretics tolvaptan

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