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Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (<i>μ</i>-Oxo)tetraruthenium Cluster

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Green and Sustainable Chemistry 2011年第4期1卷 149-154页

作者： Teruyuki Kondo Yu Kimura Takashi Kanda daisuke takagi Kenji Wada Akio Toshimitsu 不详

A (μ-oxo)tetraruthenium cluster showed high catalytic activity for a simple and practical aerobic oxidation of alcohols to aldehydes and ketones under 1 atm of O2 or air. After the reaction, this cluster catalyst was re- covered from the reaction mixture, and we believe that this (μ-oxo)tetraruthenium cluster acts as an active catalytic species throughout the reaction.

关键词： Ruthenium Cluster Catalyst Aerobic Oxidation Alcohol

Triple therapy of interferon and ribavirin with zinc supplementation for patients with chronic hepatitis C:A randomized controlled clinical trial

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World Journal of Gastroenterology 2006年第8期12卷 1265-1269页

作者： Hideyuki Suzuki Hitoshi takagi Naondo Sohara daisuke Kanda Satoru Kakizaki Ken Sato Masatomo Mori Department of Medicine and Molecular Science Gunma University Graduate School of MedicineShowa-machi 3-39MaebashiGunma 371-8511Japan

AIM： To study the therapeutic effect of interferon （IFN） and ribavirin with zinc supplement on patients with chronic hepatitis C viral （HCV） infection. METHODS： A total of 102 patients confirmed histologically to have chronic HCV infection with genotype lb and more than 100 KIU/mL of HCV were randomly assigned to each arm of the study and each received 10 million units of pegylated interferon （IFN- alpha-2b） daily for 4 wk followed by the same dose every other day for 20 wk plus ribavirin （600 or 800 mg/d depending on body weight）, with or without polaprezinc （150 mg/d） orally for 24 wk. The primary endpoint was sustained virological response （SVR） defined as negative HCV-RNA in the serum 6 mo after treatment. RESULTS： There were no differences in the clinical background between the two groups except for more females in the dual therapy group than in the other group （P〈 0.05）. SVR was observed in 33.3% of the triple therapy group and 33.3% of the dual therapy group. The side effects were almost the same in both groups except for gastrointestinal symptoms, which were less in the triple therapy group （P= 0.019）. CONCLUSION： Considered together, triple therapy of zinc plus IFN and ribavirin for HCV infection patients with genotype lb and high viral load is not better than dual therapy except for lower incidence of gastrointestinal side effects.

关键词： HCV Zinc Interferon Ribavirin

Cell sheet technology for regeneration of esophageal mucosa

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World Journal of Gastroenterology 2012年第37期18卷 5145-5150页

作者： Ryo takagi Masayuki Yamato Nobuo Kanai daisuke Murakami Makoto Kondo Takaaki Ishii Takeshi Ohki Hideo Namiki Masakazu Yamamoto Teruo Okano Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University Department of Surgery Institute of GastroenterologyTokyo Women's Medical University Graduate School of Science and Engineering Waseda University

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 *** 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.

关键词： Cell sheet Endoscopic resection Esophagealstenosis Oral mucosa Good manufacturing practice

Overexpression of NK2 inhibits liver regeneration after partial hepatectomy in mice

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World Journal of Gastroenterology 2005年第47期11卷 7444-7449页

作者： Toshiyuki Otsuka Norio Horiguchi daisuke Kanda Takashi Kosone Yuichi Yamazaki Kazuhisa Yuasa Naondo Sohara Satoru Kakizaki Ken Sato Hitoshi takagi Glenn Merlino Masatomo Mori Department of Medicine and Molecular Science Gunma University Graduate School of Medicine3-39-15 ShowaMaebashiGunma 371-8511Japan Laboratory of Cell Regulation and Carinogenesis National Cancer InstituteBuilding 37Room 5002BethesdaMD 20892-4264United States

AIM： To investigate the in vivo effects of NK2 on liver regeneration after partial hepatectomy （PH）. METHODS： Survival after PH was observed with 21 NK2 transgenic mice and 23 wild-type （WT） mice over 10 d. Liver regeneration was analyzed using histology and immunohistochemistry. Expressions of genes were analyzed using Northern blot analysis, immunoprecipitation and immunoblotting, and reverse transcriptase polymerase chain reaction assay. Kaplan Meier method and the log-rank test were used for analyzing the survival after PH. Differences in the results of immunohistochemistry and percentage of liver regeneration was determined by the Student＇s t-test. RESULTS： More than half of NK2 transgenic mice died within 48 h after PH. After PH, increased deposition of small lipid droplets in hepatocytes was evident and hepatic proliferation was inhibited in NK2 transgenic mice. The hepatic expression and kinase activity of HGF receptor, c-Met, were unchanged among WT mice and NK2 transgenic mice after PH. The expression of tumor necrosis factor-co （TNF-c0 and interleukin-6 （IL-6） in liver tissues were prolonged in NK2 transgenic mice that died after PH. CONCLUSION： Our findings indicate that overexpression of NK2 inhibits liver regeneration after PH.

关键词： Hepatocyte growth factor NK2 Transgenic mice Partial hepatectomy Liver regeneration

Fiber Formation of Poly（tetrafluoroethylene） from its Emulsion

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Fiber Formation of Poly（tetrafluoroethylene） from its Emul...

Association between ADAMTS13 activity-VWF antigen imbalance and the therapeutic effect of HAIC in patients with hepatocellular carcinoma

第六届国际高技术高分子材料学术会议

作者： Hideki Yamane Yoshito takagi Takashi Wano daisuke Kitagawa Grad.School of Sci.& Tech. Kyoto Institute of Technology

＜正＞*** Poly（tetrafluoroethylene）（PTFE）has been known to have various superior properties such as thermal stability,chemical resistance,weather resistance

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来源： cnki会议评论

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World Journal of Gastroenterology 2020年第45期26卷 7232-7241页

作者： Hiroaki Takaya Tadashi Namisaki Kei Moriya Naotaka Shimozato Kosuke Kaji Hiroyuki Ogawa Koji Ishida Yuki Tsuji daisuke Kaya Hirotestu takagi Yukihisa Fujinaga Norihisa Nishimura Yasuhiko Sawada Hideto Kawaratani Takemi Akahane Masanori Matsumoto Hitoshi Yoshiji Department of Gastroenterology Nara Medical UniversityKashiharaNara 634-8522Japan Department of Blood Transfusion Medicine Nara Medical UniversityKashiharaNara 634-8522Japan

BACKGROUND Prediction of HAIC treatment response is important for improving the prognosis in patients with hepatocellular carcinoma(HCC).The progression of HCC is related to hypercoagulability and *** is known that ADAMTS13 and von Willebrand factor(VWF)are related to *** addition,previous study reported that the association between ADAMTS13 and VWF,and angiogenesis via vascular endothelial growth factor(VEGF).Recently,ADAMTS13 and VWF have been associated with the prognosis in patients with various kinds of cancer undergoing *** To investigate whether ADAMTS13 and VWF become useful biomarkers of treatment response in HCC patients before the initiation of HAIC *** Seventy-two patients were enrolled in this ***13 activity(ADAMTS13:AC),VWF antigen(VWF:Ag)and VEGF levels were determined via enzyme-linked immunosorbent *** and multivariable analyses were performed to determine the predictive factors of treatment response in patients with HCC undergoing HAIC *** ADAMTS13:AC levels in HCC patients with stable disease(SD)+partial response(PR)of HAIC treatment were significantly higher than those with progressive disease(PD)(P2.7)had higher VEGF levels than those with low ratio(≤2.7).Multivariable analysis revealed that VWF:Ag/ADAMTS13:AC ratio was a predictive factor of HAIC treatment *** VWF:Ag/ADAMTS13:AC ratio may become a useful biomarker of treatment response in HCC patients before the initiation of HAIC treatment.

关键词： ADAMTS13 Von Willebrand factor Vascular endothelial growth factor Biomarkers Hepatocellular carcinoma HAIC

Hepatocellular carcinoma in extremely elderly patients:An analysis of clinical characteristics,prognosis and patient survival

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World Journal of Gastroenterology 2006年第1期12卷 48-53页

作者： Gengo Tsukioka Satoru Kakizaki Naondo Sohara Ken Sato Hitoshi takagi Hirotaka Arai Takehiko Abe Mitsuo Toyoda Kenji Katakai Akira Kojima Yuichi Yamazaki Toshiyuki Otsuka Yutaka Matsuzaki Fujio Makita daisuke Kanda Katsuhiko Horiuchi Tetsuya Hamada Mieko Kaneko Hideyuki Suzuki Masatomo Mori Department of Medicine and Molecular Science Gunma University Graduate School of MedicineMaebashiGunma 371-8511Japan Department of Gastroenterology Maebashi Red Cross HospitalMaebashiGunma 371-0014Japan Department of Internal Medicine Isesaki Municipal HospitalIsesakiGunma 372-0817Japan Department of Internal Medicine Kiryu Kousei General HospitalKiryuGunma 376-0024Japan Department of Internal Medicine Tone Chuo HospitalNuraataGunma 378-0053Japan Department of Gastroenterology National Nishigunma HospitalShibukawaGumna 377-0027Japan Department of Gastroenterology Saiseikai Maebashi HospitalMaebashiGunma 371-0821Japan Department of Gastroenterology Public Tomioka General HospitalTomiokaGunma 370-2361Japan Department of Internal Medicine Fuji Heavy Industries Ltd.Health Insurance Society General Ota HospitalOtaGunma 373-0056Japan Department of Gastroenterology Shimada Memorial HospitalFujiokaGunma 375-0024Japan

AIM： To identify the clinical and prognostic features of patients with hepatocellular carcinoma （HCC） aged 80 years or more. METHODS： A total of 1310 patients with HCC were included in this study. Ninety-one patients aged 80 years or more at the time of diagnosis of HCC were defined as the extremely elderly group. Two hundred and thirty-four patients aged 〉/ 50 years but less than 60 years were regarded as the non-elderly group. RESULTS： The sex ratio （male to female） was significantly lower in the extremely elderly group （0.90：1） than in the non-elderly group （3.9：1, P〈 0.001）. The positive rate for HBsAg was significantly lower in the extremely elderly group and the proportion of patients negative for HBsAg and HCVAb obviously increased in the extremely elderly group （P〈 0.001）. There were no significant differences in the following parameters： diameter and number of tumors, Child-Pugh grading, tumor staging, presence of portal thrombosis or ascites, and positive rate for HCVAb. Extremely elderly patients did not often receive surgical treatment （P 〈 0.001） and they were more likely to receive conservative treatment （P〈 0.01）. There were no significant differences in survival curves based on the Kaplan-Meier methods in comparison with the overall patients between the two groups. However, the survival curves were significantly worse in the extremely elderly patients with stage Ⅰ/Ⅱ, stage Ⅰ/Ⅱ and Child-Pugh grade A cirrhosis in comparison with the non-elderly group. The causes of death did not differ among the patients, and most cases died of liverrelated diseases even in the extremely elderly patients. CONCLUSION： In the patients with good liver functions and good performance status, aggressive treatment for HCC might improve the survival rate, even in extremely elderly patients.

关键词： Hepatocellular carcinoma Extremely elderly patients Survival analysis Cause of death

Gastrointestinal stromal tumor presenting with prominent calcification

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World Journal of Gastroenterology 2012年第39期18卷 5645-5648页

作者： Naoki Izawa Takeshi Sawada Ryuichi Abiko daisuke Kumon Mami Hirakawa Mika Kobayashi Nobuyuki Obinata Masahito Nomoto Tadateru Maehata Shun-ichi Yamauchi Takefumi Kouro Takashi Tsuda Satoshi Kitajima Hiroshi Yasuda Keiichi Tanaka Ichiro Tanaka Masahiro Hoshikawa Masayuki takagi Fumio Itoh Division of Gastroenterology and Hepatology St.Marianna University School of MedicineKawasaki 216-8511Japan Division of Gastroenterological and General Surgery St.Marianna University School of MedicineKawasaki 216-8511Japan Department of Pathology St.Marianna University School of MedicineKawasak 216-8511Japan

We present a rare case of a gastrointestinal stromal tumor (GIST) in the stomach with prominent calcifica-tion at presentation. A 61-year-old woman visited our hospital because of epigastric discomfort. A spherical calcified lesion with a diameter of about 30 mm was incidentally shown in the left upper quadrant on an abdominal X-ray. Computed tomography demonstrated that the tumor was growing from the upper gastric body, with calcification in the peripheral ring area. A laparoscopic partial gastrectomy was performed, and the resected specimen revealed a well-circumscribed tumor with exophytic growth from the gastric muscularis propria. Microscopic examination revealed spindle- shaped tumor cells with calcification and hemorrhage. Additionally, positive immunoreactivity of the tumor to KIT and CD34 and a low mitotic index resulted in the diagnosis of very low risk GIST. There are a few case reports of heavily calcified GIST, although solitary or punctate calcification of primary GIST has been reported in several case series. Dystrophic calcification of necrotic or degenerative tissue is the supposed cause of primary calcified GISTs. In contrast, appearance of calcification after administration of imatinib mesylate, which may be one indicator of disease response, is possibly caused by a different mechanism.

关键词： Gastrointestinal stromal tumor Calcifica-tion Stomach Computed tomography Imatinib me-sylate

Efficacy of 5-Fluorouracil and High-Concentration Cisplatin Suspended in Lipiodol by Short-Term Hepatic Arterial Infusion Chemotherapy for Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis

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Journal of Cancer Therapy 2015年第13期6卷 1151-1161页

作者： Yutaka Yata Masashi Namikawa Tatsuya Ohyama Takashi Ohsaki daisuke Kanda Takeshi Hatanaka Kei Shibuya Jun Kubota Hitoshi takagi Terumi Takahara Teruo Yoshinaga Department of Gastroenterology Saiseikai Maebashi Hospital Maebashi-City Japan Department of Radiology Saiseikai Maebashi Hospital Maebashi-City Japan Third Department of Internal Medicine Toyama University Toyama-City Japan

Background: Since advanced hepatocellular carcinoma (HCC) is potentially fatal, and patients’ quality of life (QOL) often deteriorates during their treatment, improving the prognosis and QOL of patients given chemotherapy is very important. In addition, cost-effective treatments are highly desirable when chemotherapy must be given repeatedly. The aim of this study was to evaluate the efficacy and usefulness of 5-fluorouracil (5-FU) and high-concentration cisplatin by short-term hepatic arterial infusion chemotherapy (3-day FPL) in advanced HCC patients. Methods: Thirty patients with unresectable advanced HCC were enrolled. The patients underwent hepatic arterial infusion chemotherapy via the implanted port system with 5-FU on days 1 - 3 and a fine-powder formulation of cisplatin in suspended pre-warmed lipiodol on day 2 every 4 to 10 weeks. Tumor response was assessed one month later with CT. Results: All patients had evidence of portal vein invasion (Vp2-4). Four patients achieved a complete response (CR), 8 patients achieved a partial response (PR), and 7 patients had stable disease (SD). The median progression-free survival (PFS) and overall survival (OS) were 198 days and 452 days, respectively. The OS was significantly longer in the successful disease control group (CR, PR, and SD) than in the progressive disease group (P < 0.005). Conclusions: Three-day FPL was effective and tolerable in advanced HCC patients due to its shorter time of administration than conventional FP therapy. Therefore, repetitive 3-day FPL appears useful and contributes to improving the prognosis and QOL of patients with advanced HCC. In addition, this protocol is a cost-effective treatment.

关键词： Advanced Hepatocellular Carcinoma (HCC) Portal Vein Tumor Thrombosis (PVTT) Hepatic Arterial Infusion Chemotherapy (HAIC) 5-FU a Fine-Powder Formulation of Cisplatin Quality of Life (QOL) Cost-Effective Treatment