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2244篇 您的检索式:作者名="Moriyama"
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1Apoptosis and non-alcoholic fatty liver diseases显示文摘The number of patients with nonalcoholic fatty liver diseases(NAFLD) including nonalcoholic steatohepatitis(NASH), has been increasing. NASH causes cirrhosis and hepatocellular carcinoma(HCC) and is one of the most serious health problems in the world. The mechanism through which NASH progresses is still largely unknown. Activation of caspases, Bcl-2 family proteins, and c-Jun N-terminal kinase-induced hepatocyte apoptosis plays a role in the activation of NAFLD/NASH. Apoptotic hepatocytes stimulate immune cells and hepatic stellate cells toward the progression of fibrosis in the liver through the production of inflammasomes and cytokines. Abnormalities in glucose and lipid metabolism as well as microbiota accelerate these processes. The production of reactive oxygen species, oxidative stress, and endoplasmic reticulum stress is also involved. Cell death, including apoptosis, seems very important in the progression of NAFLD and NASH. Recently, inhibitors of apoptosis have been developed as drugs for the treatment of NASH and may prevent cirrhosis and HCC. Increased hepatocyte apoptosis may distinguish NASH from NAFLD, and the improvement of apoptosis could play a role in controlling the development of NASH. In this review, the association between apoptosis and NAFLD/NASH are discussed. This review could provide their knowledge, which plays a role in seeing the patients with NAFLD/NASH in daily clinical practice.Tatsuo Kanda Shunichi Matsuoka Motomi Yamazaki Toshikatsu Shibata Kazushige Nirei Hiroshi Takahashi Tomohiro Kaneko Mariko Fujisawa Teruhisa Higuchi Hitomi Nakamura Naoki Matsumoto Hiroaki Yamagami Masahiro Ogawa Hiroo Imazu Kazumichi Kuroda Mitsuhiko Moriyama 2018World Journal of Gastroenterology2018,24,25:32
2Long-term effect of Helicobacter pylori eradication on the development of metachronous gastric cancer after endoscopic resection of early gastric cancer显示文摘Yuji Maehata Shotaro Nakamura Kiyoshi Fujisawa Motohiro Esaki Tomohiko Moriyama Kouichi Asano Yuta Fuyuno Kan Yamaguchi Issei Egashira Hyonji Kim Motonobu Kanda Minako Hirahashi Takayuki Matsumoto 2012Gastrointestinal Endoscopy2012,,1:10
3Extremely high prevalence of Helicobacter pylori infection in Bhutan显示文摘AIM: To revealed the prevalence of Helicobacter pylori (H. pylori ) infection in the Bhutanese population. METHODS: We recruited a total of 372 volunteers (214 females and 158 males; mean age of 39.6 ± 14.9 years) from three Bhutanese cities (Thimphu, Punaka, and Wangdue). The status of H. pylori infection was determined based on five different tests: the rapid urease test (CLO test), culture, histology, immunohistochemistry (IHC), and serum anti H. pylori -antibody. RESULTS: The serological test showed a significantly higher positive rate compared with the CLO test, culture, histology and IHC (P < 0.001, P < 0.001, P=0.01, and P=0.01, respectively). When the subjects were considered to be H. pylori positive in the case of at least one test showing a positive result, the overall prevalence of H. pylori infection in Bhutan was 73.4%. The prevalence of H. pylori infection significantly decreased with age (P < 0.01). The prevalence of H. pylori infection was lower in Thimphu than in Punakha and Wangdue (P=0.001 and 0.06, respectively). The prevalence of H. pylori infection was significantly higher in patients with peptic ulcers than in those with gastritis (91.4% vs 71.3%, P=0.003). CONCLUSION: The high incidence of gastric cancer in Bhutan may be attributed to the high prevalence of H. pylori infection.Ratha-korn Vilaichone Varocha Mahachai Seiji Shiota Tomohisa Uchida Thawee Ratanachu-ek Lotay Tshering Nguyen Lam Tung Toshio Fujioka Masatsugu Moriyama Yoshio Yamaoka 2013World Journal of Gastroenterology2013,19,18:8
4Contrast-enhanced ultrasonographic findings of serum amyloid A-positive hepatocellular neoplasm: Does hepatocellular adenoma arise in cirrhotic liver?显示文摘Hepatocellular adenoma(HCA) was recently classified into four pathological subtypes. There have been few studies describing the findings of contrast-enhanced ultrasonography(CEUS) of each type. Our case concerns a 78-year-old man who had undergone routine medical check-ups for hepatitis C for 11 years. Abdominal ultrasonography showed a 28 mm, hypo-echoic mass in the segment 4 of the liver. His integrating amount of drinking was 670 kg convert into ethanol. CEUS with Sonazoid demonstrated mild uniform hypo-enhancement with inflow of microbubbles from the periphery of the tumor in the arterial phase, and heterogeneously hypo-enhancement in the post vascular phase. Because the mass increased in size within 3 mo, a well differentiated hepatocellular carcinoma was suspected, and hepatic resection was performed. Microscopic findings showed homogeneous cell proliferation with low grade atypia, infiltration of inflammatory cells, ductular reactions, fatty deposit in part, and sinusoidal dilation. Immunohistochemistry revealed geographic positive for serum amyloid A(SAA), focal positive for glutaminesynthetase, diffuse and strong positive for C-reactive protein, and positive for liver-type fatty acid binding protein. These pathological features corresponded to that of an inflammatory HCA. However, we could not make a clear diagnosis, because HCAs were defined as not to arise in cirrhotic liver. Finally, this tumor was diagnosed as a SAA positive hepatocellular neoplasm.Mariko Kumagawa Naoki Matsumoto Yukinobu Watanabe Midori Hirayama Takao Miura Hiroshi Nakagawara Masahiro Ogawa Shunichi Matsuoka Mitsuhiko Moriyama Tadatoshi Takayama Masahiko Sugitani 2016World Journal of Hepatology2016,8,26:4
5A case of asymptomatic intraductal papillary neoplasm of the bile duct without hepatolithiasis显示文摘A 65-year-old woman was found to have dilatation of the intrahepatic bile duct in the right anterior segment during a general health. Laboratory data were within normal ranges and no solid mass was detected in her abdominal computer tomography (CT) or nuclear magnetic resonance imaging (MRI). However, endoscopic retrograde cholangiopancreatography (ERCP) demonstrated an obstruction of the right bile duct. Intraoperative cholangiography showed stenosis of the intrahepatic bile duct in the anterior inferior segment (B5) and narrowness of the intrahepatic bile duct in the anterior superior segment (B8), so that we strongly suspected intrahepatic cholangiocarcinoma (ICC). Histologically, surgically resected liver specimens, without tumor mass by macroscopic observation, showed intraductal papillary proliferation with fibrovascular cores and intraductal spreading of carcinoma in situ throughout a considerable area, especially in bile ductules around the peripheral small portal area. Furthermore, the immunohistochemical profile of the tumor (MUC5AC+/CK7+) was compatible with an intraductal papillary neoplasm of the bile duct (IPN-B). Consequently, this case was diagnosed as IPN-B with spreading CIS, stageⅠ(pT1, pN0, P0, H1, M0). We report a case of IPN-B with interesting histopathologicalfindings and emphasize that cholangiography is especially helpful for the diagnosis of bile duct dilatation due to infiltration of carcinoma cells.Junpei Hayashi Shyun-ichi Matsuoka Makiko Inami Shu Ohshiro Akiyasu Ishigami Hirotoshi Fujikawa Masahide Miyagawa Kenji Mimatsu Youichi Kuboi Hisao Kanou Takatsugu Oida Makiko Inami Shu Ohshiro Mitsuhiko Moriyama 2008World Journal of Gastroenterology2008,14,10:4
6Causative anti-diabetic drugs and the underlying clinical factors for hypoglycemia in patients with diabetes显示文摘Recent clinical trials indicated that the intensive glycemic control do not reduce cardiovascular disease mortality among diabetic patients, challenging a significance of the strict glycemic control in diabetes management. Furthermore, retrospective analysis of the Action to Control Cardiovascular Risk in Diabetes study demonstrated a significant association betweenhypoglycemia and mortality. Here, we systematically reviewed the drug-induced hypoglycemia, and also the underlying clinical factors for hypoglycemia in patients with diabetes. The sulfonylurea use is significantly associated with severe hypoglycemia in patients with type 2 diabetes. The use of biguanide(approximately 45%-76%) and thiazolidinediones(approximately 15%-34%) are also highly associated with the development of severe hypoglycemia. In patients treated with insulin, the intensified insulin therapy is more frequently associated with severe hypoglycemia than the conventional insulin therapy and continuous subcutaneous insulin infusion. Among the underlying clinical factors for development of severe hypoglycemia, low socioeconomic status, aging, longer duration of diabetes, high Hb A1 c and low body mass index, comorbidities are precipitating factors for severe hypoglycemia. Poor cognitive and mental functions are also associated with severe hypoglycemia.Hidekatsu Yanai Hiroki Adachi Hisayuki Katsuyama Sumie Moriyama Hidetaka Hamasaki Akahito Sako 2015World Journal of Diabetes2015,6,1:3
7Laparoscopy-assisted Billroth I gastrectomy显示文摘Kitano S Iso Y Moriyama M 0,,02:3
8Interleukin-1β gene polymorphisms associated with hepatocellular carcinoma in hepatitis C virus infection显示文摘Yue Wang Naoya Kato Yujin Hoshida Hideo Yoshida Hiroyoshi Taniguchi Tadashi Goto Masaru Moriyama Motoyuki Otsuka Shuichiro Shiina Yasushi Shiratori Yoichi Ito Masao Omata 2003Hepatology2003,,:3
9Direct-acting antiviral agents against hepatitis C virus and lipid metabolism显示文摘Hepatitis C virus(HCV) infection induces steatosis and is accompanied by multiple metabolic alterations including hyperuricemia, reversible hypocholesterolemia and insulin resistance. Total cholesterol, low-density lipoprotein-cholesterol and triglyceride levels are increased by peginterferon and ribavirin combination therapy when a sustained virologic response(SVR) is achieved in patients with HCV. Steatosis is significantly more common in patients with HCV genotype 3 but interferon-free regimens are not always effective for treating HCV genotype 3 infections. HCV infection increases fatty acid synthase levels, resulting in the accumulation of fatty acids in hepatocytes. Of note, low-density lipoprotein receptor, scavenger receptor class B type Ⅰ and Niemann-Pick C1-like 1 proteins are candidate receptors that may be involved in HCV. They are also required for the uptake of cholesterol from the external environment of hepatocytes. Among HCV-infected patients with or without human immunodeficiency virus infection, changes in serum lipid profiles are observed during interferon-free treatment and after the achievement of an SVR. It is evident that HCV affects cholesterol metabolism during interferon-free regimens. Although higher SVR rates were achieved with interferon-free treatment of HCV, special attention must also be paid to unexpected adverse events based on host metabolic changes including hyperlipidemia.tatsuo kanda mitsuhiko moriyama 2017World Journal of Gastroenterology2017,23,31:3
10Histopathology of type C liver disease for determining hepatocellular carcinoma risk factors显示文摘AIM:To evaluate the histopathological findings of type C liver disease to determine risk factors for development of hepatocellular carcinoma(HCC).METHODS:We studied 232 patients,who underwent liver biopsy for type C chronic liver disease between 1992 and 2009,with sustained virological response(SVR)after interferon therapy.The patients were divided into two groups according to the F stage 0+1+2 group(n = 182)and F3+4 group(n = 50).We prospectively observed and compared the incidence of HCC of the patients with SVR in the F0+1+2 and F3+4 groups.Then,the background factors and liver histopathological findings,including the degree of fibrosis,F stage,inflammation,necrosis,bile duct obstruction,fat deposition,and degree of irregular regeneration(IR)of hepatocytes,were correlated with the risk of developing HCC.RESULTS:HCC developed in three of 182(1.6%)patients in the F0+1+2 group,and four of 50(8.0%)in the F3+4 group.The cumulative incidence of HCC in the former group was found to be significantly lower than in the F3+4 group(log rank test P = 0.0224).The presence of atypical hepatocytes among IR of hepatocytes in the F3+4 group resulted in a higher cumulative incidence of HCC,and was significantly correlated with risk of HCC development(RR = 20.748,95%CI:1.335-322.5,P = 0.0303).CONCLUSION:Atypical hepatocytes among the histopathological findings of type C liver disease may be an important risk factor for HCC development along with progression of liver fibrosis.Hiroshi Matsumura Kazushige Nirei Hitomi Nakamura Teruhisa Higuchi Yasuo Arakawa Masahiro Ogawa Naohide Tanaka Mitsuhiko Moriyama 2013World Journal of Gastroenterology2013,19,30:3
11Advanced technology for the improvement of adenoma and polyp detection during colonoscopy显示文摘Tomohiko Moriyama Toshio Uraoka Motohiro Esaki Takayuki Matsumoto 2015Digestive Endoscopy2015,,:2
12Helianthus tuberosus(Jerusalem artichoke) tubers improve glucose tolerance and hepatic lipid profile in rats fed a high-fat diet显示文摘Objective:To analyze the effects of feeding Helianthus tuberosus(HT) tubers on glucose tolerance and lipid profile in rats fed a high-fat diet(HFD). Methods:A normal HFD or HFD including 10 w/w% HT tubers(HFD + HT) was fed to F334/Jcl rats. After 10 weeks,organ weights,glucose tolerance,and lipid profile were analyzed. Results:The body weight,liver weight,and epidermal fat content in the HFD group were higher than those of the normal group,and similar to those of the HFD + HT group. The oral glucose tolerance test at 10 weeks revealed that the blood glucose level 30 minutes after beginning the test in the HFD + HT group was significantly lower than that in the HFD group. Liver triglyceride and total cholesterol levels in the HFD + HT group were significantly lower than those in the HFD group. Fecal triglyceride and total cholesterol levels in the HFD + HT group were higher than those in the HFD group. Histological analyses revealed that fat and glycogen accumulation increased in the HFD group,but decreased in the HFD + HT group. Conclusions:These results indicate that HT tubers have anti-fatty liver effects based on improvements in glucose tolerance and the hepatic lipid profile.Naoto Okada Shinya Kobayashi Kouta Moriyama Kohsuke Miyataka Shinji Abe ChiemiSato Kazuyoshi Kawazoe 2017Asian Pacific Journal of Tropical Medicine2017,10,5:2
13A high-strength Mg–Ni–Y alloy sheet with a long-period ordered phase prepared by hot-rolling显示文摘T. Itoi K. Takahashi H. Moriyama M. Hirohashi 2008Scripta Materialia2008,,10:2
14Hepatic gene expression profiles associated with fibrosis progression and hepatocarcinogenesis in hepatitis C patients显示文摘AIM: To determine fibrosis progression and hepatocellular carcinoma (HCC), using simultaneous gene expression analysis.METHODS: Total RNA samples were extracted from liver biopsies from 19 patients with hepatitis C virus (HCV)infection and 3 patients without HCV infection. Among the 19 HCV-infected patients, 7 and 12 patients had grade F1-2 and F3-4 fibrosis, respectively. Of the 12 patients with F3-4 fibrosis, 8 had HCC. Gene expression in the liver samples was determined using an oligonucleotide microarray. The following comparisons were performed:normal livers vs HCV-infected livers; F1-2 vs F3-4; and F3-4 with HCC vs F3-4 without HCC. Genes that were differentially expressed between these groups were identified based on signal-to-noise ratios.RESULTS: In the HCV-infected livers, genes involved in immune responses were highly expressed. Expression levels of genes for plasma proteins and drug-metabolizing enzymes were decreased and those of genes involved in the cell cycle and oncogenesis were increased in the F3-4 cases as compared to the F1-2 cases. Among the F3-4 cases, genes involved in carbohydrate metabolism tended to be more highly expressed in patients with HCC than in patients without HCC.CONCLUSION: We identified genes that are associated with fibrosis progression and hepatocarcinogenesis. This information may be used to detect increased carcinogenic potential in the livers of patients with HCV infection.Yujin Hoshida Motoyuki Otsuka Naoya Kato Ryosuke Tateishi Takuma Teratani Shuichiro Shiina Hiroyoshi Taniguchi Masaru Moriyama Takao Kawabe Masao Omata 2005World Journal of Gastroenterology2005,11,13:2
15地铁站内烟气流动特性和消防安全(英文)显示文摘介绍了地铁站内烟气流动和控制的试验和数值研究。在三个真正地铁站内利用甲醇油池火作为燃料进行了试验,用所获得数据来验证地铁站火灾数值模型,并进一步检验其烟控系统的性能。在站内使用了制量烟气流动模型,再现了最简单条件下每个站点的试验结果,然后把结果跟其他试验条件下的试验结果进行了比较。最后,用模型预测更复杂火灾的烟气流动情况。另外,还讨论了地铁系统的有效设计和火灾安全设施的正常运作情况。通过限制内饰面材料的燃烧性能或者安装自动喷淋系统都可以有效控制热释放速率,且在站点两端开设逃生路线、站台和地铁隧道直接卷帘的正常启动等可有效保证安全疏散。SHUJI MORIYAMA YUJI HASEMI DON-GUN NAM SATOSHI TANAKA NAOMI OKAZAWA 2006消防科学与技术2006,25,3:2
16A novel extra-wide-angle–view colonoscope: a simulated pilot study using anatomic colorectal models显示文摘Toshio Uraoka Shinji Tanaka Takayuki Matsumoto Takahisa Matsuda Shiro Oka Tomohiko Moriyama Reiji Higashi Yutaka Saito 2012Gastrointestinal Endoscopy2012,,:2
17Laparoscopic-assisted Billroth I gastrectomy显示文摘Kitano S Iso Y Moriyama M 0,,04:2
18Digital transmission of high bit rate signals using 16DAPSK-OFDM Modulation scheme显示文摘Moriyama S Tsuchida K Sasaki M 1998IEEE Transmission on Broadcasting1998,44,1:2
19Endoscopic resection for residual lesion of metastatic gastric cancer:A case report显示文摘BACKGROUND Chemotherapy is a standard strategy for stage IV gastric cancer patients.However, some cases cannot undergo conversion surgery because of their frailty,even if the patients had response to chemotherapy. For these patients, local tumor progression is a problem. We report here the case of a patient whose residual gastric cancer was resected through endoscopic submucosal dissection(ESD)after concomitant chemotherapy for metastatic gastric cancer.CASE SUMMARY An 85-year-old male complained of difficulty swallowing, and examination revealed gastric cancer with multiple liver metastases. Although he received concomitant chemotherapy, a residual tumor was observed in the primary lesion while the metastatic lesions disappeared completely. Conversion surgery was considered optional treatment; however, he could not undergo that because of advanced age and comorbidities. Thus, we performed ESD to treat the residual tumor. As a result, we resected the residual lesion completely. The patient has been alive for 29 mo since ESD, without recurrence.CONCLUSION We achieved local control using ESD, and these findings may provide therapeutic improvements both in local control and patient survival outcomes.Kaori Hayashi Sho Suzuki Hisatomo Ikehara Hiroaki Okuno Akira Irie Mitsuru Esaki Chika Kusano Takuji Gotoda Mitsuhiko Moriyama 2019World Journal of Clinical Cases2019,7,4:2
20Calcium channel blockers inhibit proliferation and matrix production in rat mesangial cells: possible mechanism of suppression of AP-1 and CREB activities 显示文摘Sugiura T Imai E Moriyama T 2000Nephron2000,85,:2
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