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| 1 | Current surgical treatment for bile duct cancer显示文摘Since extrahepatic bile duct cancer is difficult to diagnose and to cure,a safe and radical surgical strategy is needed.In this review,the modes of infiltration and spread of extrahepatic bile duct cancer and surgical strategy are discussed.Extended hemihepatectomy,with or without pancreatoduodenectomy(PD),plus extrahepatic bile duct resection and regional lymphadenectomy has recently been recognized as the standard curative treatment for hilar bile duct cancer.On the other hand,PD is the choice of treatment for middle and distal bile duct cancer.Major hepatectomy concomitant with PD(hepatopancreatoduodenectomy)has been applied to selected patients with widespread tumors.Preoperative biliary drainage(BD)followed by portal vein embolization(PVE)enables major hepatectomy in patients with hilar bile duct cancer without mortality.BD should be performed considering the surgical procedure,especially,in patients with separated intrahepatic bile ducts caused by hilar bile duct cancer.Right or left trisectoriectomy are indicated according to the tumor spread and biliary anatomy.As a result,extended radical resection offers a chance for cure of hilar bile duct cancer with improved resectability,curability,and a 5-year survival rate of 40%.A 5-year survival rate has ranged from 24% to 39% after PD for middle and distal bile duct cancer. | Yasuji Seyama Masatoshi Makuuchi | 2007 | World Journal of Gastroenterology2007，13，10： | 74 |
| 2 | KL-6 mucin expression in carcinoma of the ampulla of Vater: Association with cancer progression显示文摘AIM: To assess histochemical expression of KL-6 and its clinicopathological significance in carcinoma of the ampulla of Vater.METHODS: Ampullary carcinoma tissues were collected from 38 patients who underwent pancreatoduodenectomy or local resection. Tissues were subjected to immunohistochemical analysis using KL-6 antibody.RESULTS: Positive staining of ampullary carcinoma cells was observed in 26 (68.4%) cases. Staining was not found in the surrounding non-cancer regions of the ampullary tissues. Remarkable KL-6 expression was observed in invasive carcinoma cells in pancreatic and duodenal tissues and in metastatic carcinoma cells in lymph nodes. Positive KL-6 expression was related to lymph node metastasis (P = 0.020), pancreatic invasion (P = 0.016), duodenal invasion (P = 0.034), and advanced stage of TNM clinical classification (P = 0.010). Survival analysis showed that positive expression of KL-6 was related to a poorer prognosis (P = 0.029).CONCLUSION: The aberrant expression of KL-6 mucin is significantly related to unfavorable behaviors of carcinoma of the ampulla of Vater. | Wei Tang Yoshinori Inagaki Norihiro Kokudo Qian Guo Yasuji Seyama Munehiro Nakata Hiroshi Imamura Keiji Sano Yasuhiko Sugawara Masatoshi Makuuchi | 2005 | World Journal of Gastroenterology2005，11，35： | 10 |
| 3 | Hepatitis C virus enhances incidence of idiopathic pulmonary fibrosis显示文摘AIM: To investigate the cumulative development incidence and predictive factors for idiopathic pulmonary fibrosis in hepatitis C virus (HCV) positive patients. METHODS: We studied 6150 HCV infected patients who were between 40-70 years old (HCV-group). Another 2050 patients with hepatitis B virus (HBV) were selected as control (HBV-group). The mean observation period was 8.0 ± 5.9 years in HCV-group and 6.3 ± 5.5 years in HBV-group. The primary goal is the development of idiopathic pulmonary fibrosis (IPF) in both groups. The cumulative appearance rate of IPF and independent factors associated with the incidence rate of IPF were calculated using the Kaplan- Meier method and the Cox proportional hazard model. All of the studies were performed retrospectively by collecting and analyzing data from the patient records in our hospital. RESULTS: Fifteen patients in HCV-group developedIPF. On the other hand, none of the patients developed IPF in HBV-group. In HCV-group, the cumulative rates of IPF development were 0.3% at 10th year and 0.9% at 20th year. The IPF development rate in HCV-group was higher than that in HBV-group (P = 0.021). The IPF development rate in patients with HCV or HBV was high with statistical significance in the following cases: (1) patients ≥ 55 years (P < 0.001); (2) patients who had smoking index (package per day × year) of ≥ 20 (P = 0.002); (3) patients with liver cirrhosis (P = 0.042). CONCLUSION: Our results indicate that age, smoking and liver cirrhosis enhance the development of IPF in HCV positive patients. | Yasuji Arase Fumitaka Suzuki Yoshiyuki Suzuki Norio Akuta Masahiro Kobayashi Yusuke Kawamura Hiromi Yatsuji Hitomi Sezaki Tetsuya Hosaka Miharu Hirakawa Satoshi Saito Kenji Ikeda Hiromitsu Kumada | 2008 | World Journal of Gastroenterology2008，14，38： | 8 |
| 4 | Long‐term entecavir treatment reduces hepatocellular carcinoma incidence in patients with hepatitis B virus infection显示文摘 | Tetsuya Hosaka Fumitaka Suzuki Masahiro Kobayashi Yuya Seko Yusuke Kawamura Hitomi Sezaki Norio Akuta Yoshiyuki Suzuki Satoshi Saitoh Yasuji Arase Kenji Ikeda Mariko Kobayashi Hiromitsu Kumada | 2013 | Hepatology2013，，： | 5 |
| 5 | Long-term continuous entecavir therapy in nucleos(t)ide-na?ve chronic hepatitis B patients显示文摘 | Atsushi Ono Fumitaka Suzuki Yusuke Kawamura Hitomi Sezaki Tetsuya Hosaka Norio Akuta Masahiro Kobayashi Yoshiyuki Suzuki Satoshi Saitou Yasuji Arase Kenji Ikeda Mariko Kobayashi Sachiyo Watahiki Rie Mineta Hiromitsu Kumada | 2012 | Journal of Hepatology2012，，3： | 3 |
| 6 | Long-Term Outcome of Extended Hemihepatectomy for Hilar Bile Duct Cancer With No Mortality and High Survival Rate显示文摘 | Yasuji Seyama Keiichi Kubota Keiji Sano Tamaki Noie Tadatoshi Takayama Tomoo Kosuge Masatoshi Makuuchi | 2003 | Annals of Surgery2003，，1： | 3 |
| 7 | Spontaneous rupture of splenic hamartoma in a patient with hepatitis C virus-related cirrhosis and portal hypertension:A case report and review of the literature显示文摘自发的破裂是脾的错构瘤的稀罕复杂并发症。文学的评论揭示了仅仅四个如此的盒子。就我们的知识而言,这是与肝肝硬化和门静脉高血压联系的脾的错构瘤的自发的破裂的第一份报告。一个 53 岁的女人,被跟随在上面因为大动脉的解剖和丙肝病毒(HCV ) 联系了肝肝硬化,与突然的左胸和肩膀疼痛被提交。腹的超声证明流血的 intraabdominal,和显示的计算断层摄影术脾肿大破裂。突现的脾切除术被执行。手术后的功课是平静的,并且病人在第 13 手术后的天被解除。病理揭示了肿瘤是一个破裂的脾的错构瘤。非肿胀的脾的实质揭示了充血变化。我们认为肝肝硬化和门静脉高血压的存在是为脾的错构瘤的自发的破裂的风险因素。 | Yasuji Seyama Nobutaka Tanaka Yoshio Suzuki Motoki Nagai Takatoshi Furuya Yukihiro Nomura Jimpei Ishii Masakazu Nobori | 2006 | World Journal of Gastroenterology2006，12，13： | 3 |
| 8 | Effect of type 2 diabetes on risk for malignancies includes hepatocellular carcinoma in chronic hepatitis C显示文摘 | Yasuji Arase Mariko Kobayashi Fumitaka Suzuki Yoshiyuki Suzuki Yusuke Kawamura Norio Akuta Masahiro Kobayashi Hitomi Sezaki Satoshi Saito Tetsuya Hosaka Kenji Ikeda Hiromitsu Kumada Tetsuro Kobayashi | 2013 | Hepatology2013，，3： | 2 |
| 9 | Poor Response to Pegylated Interferon and Ribavirin in Older Women Infected with Hepatitis C Virus of Genotype 1b in High Viral Loads显示文摘 | Hitomi Sezaki Fumitaka Suzuki Yusuke Kawamura Hiromi Yatsuji Tetsuya Hosaka Norio Akuta Masahiro Kobayashi Yoshiyuki Suzuki Satoshi Saitoh Yasuji Arase Kenji Ikeda Yuzo Miyakawa Hiromitsu Kumada | 2009 | Digestive Diseases and Sciences2009，，6： | 2 |
| 10 | Association of two polymorphisms of the IL28B gene with viral factors and treatment response in 1,518 patients infected with hepatitis C virus显示文摘 | Mariko Kobayashi Fumitaka Suzuki Norio Akuta Hitomi Sezaki Yoshiyuki Suzuki Tetsuya Hosaka Yusuke Kawamura Masahiro Kobayashi Satoshi Saitoh Yasuji Arase Kenji Ikeda Kazuaki Chayama Yuzo Miyakawa Hiromitsu Kumada | 2012 | Journal of Gastroenterology2012，，5： | 2 |
| 11 | Stability of pyrrolidone derivatives against γ-ray irradiation显示文摘To evaluate the stability of N-alkylated pyrrolidone derivatives(NRPs),which are supposed to be used as precipitants for U(VI) and Pu(IV,VI) species in HNO 3 media,under irradiation environment,some candidate NRPs were irradiated by γ-ray.Irradiation to HNO 3 solutions up to 6 mol dm 3(= M) containing 2 M N-n-butyl-2-pyrrolidone(NBP),one of NRPs with lower hydrophobicity,has revealed that the residual ratios of NBP in the samples of HNO 3 up to 3 M decreased identically and linearly.Approximately 20% of NBP was found to be degraded after the irradiation at 1 MGy.It was also found that the decrease in the precipitation ratio of UO 2 2+(P.R.,%) was gentle and that the P.R.values were relatively in accordance with the residual ratios of NBP.On the other hand,the degradation of the samples irradiated in 6 M HNO 3 was found more distinguished.It was proposed from the analyses of degraded compounds that the degradation of NBP in HNO 3 by γ-ray irradiation started from the cleavage of the pyrrolidone ring by the addition of oxygen atom originating from HNO 3,followed by the formation of chain compounds by the successive addition of oxygen,leading to the generation of oxalic acid and acetic acid.The stability of other NRPs in 3 M HNO 3 was evaluated to be nearly identical with that of NBP except lower P.R.values of the samples containing NRPs with higher hydrophobicity irradiated at more than 0.5 MGy. | NOGAMI Masanobu SUGIYAMA Yuichi KAWASAKI Takeshi HARADA Masayuki KAWATA Yoshihisa MORITA Yasuji KIKUCHI Toshiaki IKEDA Yasuhisa | 2012 | Science China Chemistry2012，55，9： | 2 |
| 12 | Selection of a virus strain resistant to entecavir in a nucleoside-naive patient with hepatitis B of genotype H显示文摘 | Fumitaka Suzuki Norio Akuta Yoshiyuki Suzuki Hiromi Yatsuji Hitomi Sezaki Yasuji Arase Yusuke Kawamura Tetsuya Hosaka Masahiro Kobayashi Kenji Ikeda Mariko Kobayashi Sachiyo Watahiki Hiromitsu Kumada | 2007 | Journal of Clinical Virology2007，，2： | 2 |
| 13 | Expression of KL-6/MUC1 in pancreatic cancer tissues and its potentialinvolvement in tumor metastasis显示文摘 | Huanli Xu Yoshinori Inagaki Yasuji Seyama Guanhua Du Fengshan Wang Norihiro Kokudo Wei Tang | 2011 | Oncology Reports2011，，2： | 2 |
| 14 | Prevalence of hepatitis C virus variants resistant to NS3 protease inhibitors or the NS5A inhibitor (BMS-790052) in hepatitis patients with genotype 1b显示文摘 | Fumitaka Suzuki Hitomi Sezaki Norio Akuta Yoshiyuki Suzuki Yuya Seko Yusuke Kawamura Tetsuya Hosaka Masahiro Kobayashi Satoshi Saito Yasuji Arase Kenji Ikeda Mariko Kobayashi Rie Mineta Sachiyo Watahiki Yuzo Miyakawa Hiromitsu Kumada | 2012 | Journal of Clinical Virology2012，，4： | 2 |
| 15 | Characteristics of Patients With Nonalcoholic Steatohepatitis Who Develop Hepatocellular Carcinoma显示文摘 | Kohichiroh Yasui Etsuko Hashimoto Yasuji Komorizono Kazuhiko Koike Shigeki Arii Yasuharu Imai Toshihide Shima Yoshihiro Kanbara Toshiji Saibara Takahiro Mori Sumio Kawata Hirofumi Uto Shiro Takami Yoshio Sumida Toshinari Takamura Miwa Kawanaka Takeshi Oka | 2011 | Clinical Gastroenterology and Hepatology2011，，5： | 2 |
| 16 | Non-transmissible Sendai virus vector encoding c-myc suppressor FBP-interacting repressor for cancer therapy显示文摘AIM:To investigate a novel therapeutic strategy to target and suppress c-myc in human cancers using far up stream element(FUSE)-binding protein-interacting repressor(FIR).METHODS:Endogenous c-Myc suppression and apoptosis induction by a transient FIR-expressing vector was examined in vivo via a HA-tagged FIR(HA-FIR)expression vector.A fusion gene-deficient,non-transmissible,Sendai virus(SeV)vector encoding FIR cDNA,SeV/dF/FIR,was prepared.SeV/dF/FIR was examined for its gene transduction efficiency,viral dose dependency of antitumor effect and apoptosis induction in HeLa(cervical squamous cell carcinoma)cells and SW480(colon adenocarcinoma)cells.Antitumor efficacy in a mouse xenograft model was also examined.The molecular mechanism of the anti-tumor effect and c-Myc suppression by SeV/dF/FIR was examined using Spliceostatin A(SSA),a SAP155 inhibitor,or SAP155siRNA which induce c-Myc by increasing FIR△exon2 in HeLa cells.RESULTS:FIR was found to repress c-myc transcription and in turn the overexpression of FIR drove apoptosis through c-myc suppression.Thus,FIR expressing vectors are potentially applicable for cancer therapy.FIR is alternatively spliced by SAP155 in cancer cells lacking the transcriptional repression domain within exon 2(FIR△exon2),counteracting FIR for c-Myc protein expression.Furthermore,FIR forms a complex with SAP155 and inhibits mutual well-established functions.Thus,both the valuable effects and side effects of exogenous FIR stimuli should be tested for future clinical application.SeV/dF/FIR,a cytoplasmic RNA virus,was successfully prepared and showed highly efficient gene transduction in in vivo experiments.Furthermore,in nude mouse tumor xenograft models,SeV/dF/FIR displayed high antitumor efficiency against human cancer cells.SeV/dF/FIR suppressed SSA-activated c-Myc.SAP155 siRNA,potentially produces FIR△exon2,and led to c-Myc overexpression with phosphorylation at Ser62.HA-FIR suppressed endogenous c-Myc expression and induced apoptosis in HeLa and SW480 cells.A c-myc transcriptional suppressor FIR expressing SeV/dF/FIR showed high gene transduction efficiency with significant antitumor effects and apoptosis induction in HeLa and SW480 cells.CONCLUSION:SeV/dF/FIR showed strong tumor growth suppression with no significant side effects in an animal xenograft model,thus SeV/dF/FIR is potentially applicable for future clinical cancer treatment. | Kazuyuki Matsushita Hideaki Shimada Yasuji Ueda Makoto Inoue Mamoru Hasegawa Takeshi Tomonaga Hisahiro Matsubara Fumio Nomura | 2014 | World Journal of Gastroenterology2014，20，15： | 2 |
| 17 | Viral Elimination Reduces Incidence of Malignant Lymphoma in Patients with Hepatitis C显示文摘 | Yusuke Kawamura Kenji Ikeda Yasuji Arase Hiromi Yatsuji Hitomi Sezaki Tetsuya Hosaka Norio Akuta Masahiro Kobayashi Fumitaka Suzuki Yoshiyuki Suzuki Hiromitsu Kumada | 2007 | The American Journal of Medicine2007，，12： | 2 |
| 18 | Changes in physical properties of polycarbonate by absorbed water 显示文摘 | Eiko Ito Yasuji Kobayashi | 1978 | Journal of Applied Polymer Science1978，22，4： | 1 |
| 19 | Isolation and identification of alkaline lipase producing microorganisms, cultural conditions and some properties of crude enzymes显示文摘 | Watanabe N Yasuhide O T A Yasuji M | 1997 | Agric Biol Chem1997，41，8： | 1 |
| 20 | Acid-stable-amylase of black aspergilli part II显示文摘 | YAsUJi M MOT00 A | 1968 | Agricultural and Biological Chemistry1968，32，1： | 1 |
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