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| 1 | Multicenter study of endoscopic preoperative biliary drainage for malignant distal biliary obstruction显示文摘AIM: To determine the optimal method of endoscopic preoperative biliary drainage for malignant distal biliary obstruction.METHODS: Multicenter retrospective study was conducted in patients who underwent plastic stent(PS) or nasobiliary catheter(NBC) placement for resectable malignant distal biliary obstruction followed by surgery between January 2010 and March 2012. Procedurerelated adverse events, stent/catheter dysfunction(occlusion or migration of PS/NBC, developmentof cholangitis, or other conditions that required repeat endoscopic biliary intervention), and jaundice resolution(bilirubin level < 3.0 mg/d L) were evaluated. Cumulative incidence of jaundice resolution and dysfunction of PS/NBC were estimated using competing risk analysis. Patient characteristics and preoperative biliary drainage were also evaluated for association with the time to jaundice resolution and PS/NBC dysfunction using competing risk regression analysis.RESULTS: In total, 419 patients were included in the study(PS, 253 and NBC, 166). Primary cancers included pancreatic cancer in 194 patients(46%), bile duct cancer in 172(41%), gallbladder cancer in three(1%), and ampullary cancer in 50(12%). The median serum total bilirubin was 7.8 mg/d L and 324 patients(77%) had ≥ 3.0 mg/d L. During the median time to surgery of 29 d [interquartile range(IQR), 30-39 d]. PS/NBC dysfunction rate was 35% for PS and 18% for NBC [Subdistribution hazard ratio(SHR) = 4.76; 95%CI: 2.44-10.0, P < 0.001]; the pig-tailed tip was a risk factor for PS dysfunction. Jaundice resolution was achieved in 85% of patients and did not depend on the drainage method(PS or NBC).CONCLUSION: PS has insufficient patency for preoperative biliary drainage. Given the drawbacks of external drainage via NBC, an alternative method of internal drainage should be explored. | Naoki Sasahira Tsuyoshi Hamada Osamu Togawa Ryuichi Yamamoto Tomohisa Iwai Kiichi Tamada Yoshiaki Kawaguchi Kenji Shimura Takero Koike Yu Yoshida Kazuya Sugimori Shomei Ryozawa Toshiharu Kakimoto Ko Nishikawa Katsuya Kitamura Tsunao Imamura Masafumi Mizuide Nobuo Toda Iruru Maetani Yuji Sakai Takao Itoi Masatsugu Nagahama Yousuke Nakai Hiroyuki Isayama | 2016 | World Journal of Gastroenterology2016，22，14： | 18 |
| 2 | Treatment strategies for advanced hepatocellular carcinoma:Sorafenib vs hepatic arterial infusion chemotherapy显示文摘Sorafenib is used worldwide as a first-line standardsystemic agent for advanced hepatocellular carcinoma(HCC) on the basis of the results of two large-scale Phase Ⅲ trials. Conversely,hepatic arterial infusion chemotherapy(HAIC) is one of the most recommended treatments in Japan. Although there have been no randomized controlled trials comparing sorafenib with HAIC,several retrospective analyses have shown no significant differences in survival between the two therapies. Outcomes are favorable for HCC patients exhibiting macroscopic vascular invasion when treated with HAIC rather than sorafenib,whereas in HCC patients exhibiting extrahepatic spread or resistance to transcatheter arterial chemoembolization,good outcomes are achieved by treatment with sorafenib rather than HAIC. Additionally,sorafenib is generally used to treat patients with Child-Pugh A,while HAIC is indicated for those with either Child-Pugh A or B. Based on these findings,we reviewed treatment strategies for advanced HCC. We propose that sorafenib might be used as a first-line treatment for advanced HCC patients without macroscopic vascular invasion or Child-Pugh A,while HAIC is recommended for those with macroscopic vascular invasion or Child-Pugh A or B. Additional research is required to determine the best second-line treatment for HAIC non-responders with Child-Pugh B through future clinical trials. | Issei Saeki Takahiro Yamasaki Masaki Maeda Takuro Hisanaga Takuya Iwamoto Koichi Fujisawa Toshihiko Matsumoto Isao Hidaka Yoshio Marumoto Tsuyoshi Ishikawa Naoki Yamamoto Yutaka Suehiro Taro Takami Isao Sakaida | 2018 | World Journal of Hepatology2018，10，9： | 10 |
| 3 | Aggressive preoperative management and extended surgery for hilar cholangiocarcinoma: Nagoya experience显示文摘 | Yuji Nimura Junichi Kamiya Satoshi Kondo Masato Nagino Katsuhiko Uesaka Koji Oda Tsuyoshi Sano Hideo Yamamoto Naokazu Hayakawa | 2000 | Journal of Hepato - Biliary - Pancreatic Surgery2000，，2： | 6 |
| 4 | Inactivation effect of pressurized carbon dioxide on bacteriophage Qβ and ΦX174 as a novel disinfectant for water treatment显示文摘The inactivation effects of pressurized CO2 against bacteriophage Qβ and ΦX174 were investigated under the pressure of 0.3–0.9 MPa, initial concentration of 107–109PFU/mL, and temperature of17.8°C–27.2°C. The optimum conditions were found to be 0.7 MPa and an exposure time of 25 min. Under identical treatment conditions, a greater than 3.3-log reduction in bacteriophage Qβ was achieved by CO2, while a nearly 3.0 log reduction was observed for phage ΦX174. The viricidal effects of N2O(an inactivation gas with similar characteristics to CO2), normal acid(HCl), and CO2 treatment with phosphate buffered saline affirmed the chemical nature of CO2 treatment. The pumping cycle, depressurization rate, and release of intracellular substances caused by CO2 were its viricidal mechanisms. The results indicate that CO2 has the potential for use as a disinfectant without forming disinfection by-products. | Huy Thanh Vo Tsuyoshi Imai Truc Thanh Ho Masahiko Sekine Ariyo Kanno Takaya Higuchi Koichi Yamamoto Hidenori Yamamoto | 2014 | Journal of Environmental Sciences2014，26，6： | 4 |
| 5 | Survival of geriatric patients after percutaneous endoscopic gastrostomy in Japan显示文摘AIM: To examine the long term survival of geriatric patients treated with percutaneous endoscopic gastrostomy (PEG) in Japan. METHODS: We retrospectively included 46 Japanese community and tertiary hospitals to investigate 931 consecutive geriatric patients (≥ 65 years old) with swallowing difficulty and newly performed PEG between Jan 1st 2005 and Dec 31st 2008. We set death as an outcome and explored the associations among patient’s characteristics at PEG using log-rank tests and Cox proportional hazard models. RESULTS: Nine hundred and thirty one patients were followed up for a median of 468 d. A total of 502 deaths were observed (mortality 53%). However, 99%, 95%, 88%, 75% and 66% of 931 patients survived more than 7, 30, 60 d, a half year and one year, respectively. In addition, 50% and 25% of the patients survived 753 and 1647 d, respectively. Eight deaths were considered as PEG-related, and were associated with lower serum albumin levels (P = 0.002). On the other hand, among 28 surviving patients (6.5%), PEG was removed. In a multivariate hazard model, older age [hazard ratio (HR), 1.02; 95% confidence interval (CI), 1.00-1.03; P = 0.009], higher C-reactive protein (HR, 1.04; 95% CI: 1.01-1.07; P = 0.005), and higher blood urea nitrogen (HR, 1.01; 95% CI: 1.00-1.02; P = 0.003) were significant poor prognostic factors, whereas higher albumin (HR, 0.67; 95% CI: 0.52-0.85; P = 0.001), female gender (HR, 0.60; 95% CI: 0.48-0.75; P < 0.001) and no previous history of ischemic heart disease (HR, 0.69; 95% CI: 0.54-0.88, P = 0.003) were markedly better prognostic factors. CONCLUSION: These results suggest that more than half of geriatric patients with PEG may survive longer than 2 years. The analysis elucidated prognostic factors. | Yutaka Suzuki Seryna Tamez Akihiko Murakami Akihiko Taira Akihiro Mizuhara Akira Horiuchi Chie Mihara Eiji Ako Hirohito Muramatsu Hitoshi Okano Hitoshi Suenaga Kazuaki Jomoto Junya Kobayashi Katsunari Takifuji Kazuhiro Akiyama Koh Tahara Koji Onishi Makoto Shimazaki Masami Matsumoto Masashi Ijima Masato Murakami Masato Nakahori Michiaki Kudo Michio Maruyama Mikako Takahashi Naohiro Washizawa Shigeru Onozawa Satoshi Goshi Satoyoshi Yamashita Shigeki Ono Shin Imazato Shinji Nishiwaki Shuichirou Kitahara Takao Endo Takao Iiri Takeshi Nagahama Takuto Hikichi Tatsuya Mikami Tetsuo Yamamoto Tetsushi Ogawa Tomoko Ogawa Tomoyuki Ohta Toshifumi Matsumoto Toshiroh Kura Tsutomu Kikuchi Tsuyoshi Iwase Tsuyotoshi Tsuji Yukio Nishiguchi Mitsuyoshi Urashima | 2010 | World Journal of Gastroenterology2010，16，40： | 4 |
| 6 | Potential bioremediation of mercury-contaminated substrate using filamentous fungi isolated from forest soil显示文摘The use of filamentous fungi in bioremediation of heavy metal contamination has been developed recently. This research aims to observe the capability of filamentous fungi isolated from forest soil for bioremediation of mercury contamination in a substrate. Six fungal strains were selected based on their capability to grow in 25 mg/L Hg2+-contaminated potato dextrose agar plates. Fungal strain KRP1 showed the highest ratio of growth diameter, 0.831, thus was chosen for further observation.Identification based on colony and cell morphology carried out by 18S rRNA analysis gave a 98%match to Aspergillus flavus strain KRP1. The fungal characteristics in mercury(Ⅱ) contamination such as range of optimum pH, optimum temperature and tolerance level were 5.5–7 and 25–35℃ and 100 mg/L respectively. The concentration of mercury in the media affected fungal growth during lag phases. The capability of the fungal strain to remove the mercury(Ⅱ) contaminant was evaluated in 100 mL sterile 10 mg/L Hg2+-contaminated potato dextrose broth media in 250 mL Erlenmeyer flasks inoculated with 108spore/mL fungal spore suspension and incubation at 30℃ for 7 days. The mercury(Ⅱ) utilization was observed for flasks shaken in a 130 r/min orbital shaker(shaken) and nonshaken flasks(static) treatments. Flasks containing contaminated media with no fungal spores were also provided as control. All treatments were done in triplicate. The strain was able to remove 97.50%and 98.73% mercury from shaken and static systems respectively. A. flavus strain KRP1 seems to have potential use in bioremediation of aqueous substrates containing mercury(Ⅱ) through a biosorption mechanism. | Evi Kurniati Novi Arfarita Tsuyoshi Imai Takaya Higuchi Ariyo Kanno Koichi Yamamoto Masahiko Sekine | 2014 | Journal of Environmental Sciences2014，26，6： | 4 |
| 7 | An interactive rendering system using hierarchical data structure for earth-scale clouds显示文摘This paper presents an interactive system for realistic visualization of earth-scale clouds. Realistic images can be generated at interactive frame rates while the viewpoint and the sunlight directions can be changed interactively. The realistic display of earth-scale clouds requires us to render large volume data representing the density distribution of the clouds. However, this is generally time-consuming and it is difficult to achieve the interactive performance, especially when the sunlight direction can be changed. To address this, our system precomputes the integrated intensities and opacities of clouds for various viewing and sunlight directions. This idea is combined with a novel hierarchical data structure for further acceleration. The photorealism of the final image is improved by taking into account the atmospheric effects and shadows of clouds on the earth. We demonstrate the usefulness of our system by an application to a space flight simulation. | DOBASHI Yoshinori YAMAMOTO Tsuyoshi NISHITA Tomoyuki | 2010 | Science China(Information Sciences)2010，53，5： | 3 |
| 8 | 尼可地尔经皮冠状动脉介入治疗(PCI)降低心肌损伤显示文摘背景尼可地尔作为辅助治疗药物,在缺血性心脏病患者的治疗中具有良好效果。本研究旨在评估尼可地尔选择性经皮冠状动脉治疗(PCI)后对心肌的保护作用。方法我们随机地将49个接受选择性PCI治疗的病人分为尼可地尔及对照这两组。PCI治疗前,尼可地尔组先静脉推注4mg尼可地尔,介入治疗后再以6mg每小时的量静脉滴注24小时。口服尼可地尔给药组持续给药直至接下来的冠状动脉造影(CAG)。PCI治疗前及PCI治疗后0、4、24及48小时分别采集各组静脉血样,检测肌酸激酶(CK)、肌酸激酶MB亚型(CK-MB)、肌钙蛋白Ⅰ(TnI)和肌红蛋白的量。通过对比治疗前后的脑室造影来评价左心室功能及左心室壁运动。结果 PCI治疗后24小时,尼可地尔组的心肌酶水平显著低于对照组;实验组及对照组的CK分别为78.1±34.9,117.4±137.9U/l,显著性P=0.0141,CK-MB为1.57±1.90,2.67±4.50U/l,显著性P=0.0485,TnI为0.37±0.55,0.86±1.65ng/ml,显著性P=0.0101。尼可地尔组的局部左心室壁运动在后期较对照组显著增强。结论尼可地尔能抑制选择性PCI治疗后心肌酶的水平,并在后期显著增强左心室壁的运动,表明尼可地尔可提高PCI治疗时对心肌的保护,降低因血管成形术造成的心肌损伤。 | Tsuyoshi Isono Hiroshi Kamihata Yasuo Sutani Masayuki Motohiro Satoshi Yamamoto Shiori Kyoui Yoshiji Iharada Kouji Kurimoto Katsuko Hara Hakuo Takahashi Toshiji Iwasaka 陈浩 | 2016 | 首都食品与医药2016，23，20： | 3 |
| 9 | Effects of an oral iron chelator, deferasirox, on advanced hepatocellular carcinoma显示文摘AIM To evaluate the inhibitory effects of deferasirox(DFX) against hepatocellular carcinoma(HCC) through basic and clinical studies.METHODS In the basic study, the effect of DFX was investigated in three hepatoma cell lines(Hep G2, Hep3 B, and Huh7), as well as in an N-nitrosodiethylamine-induced murine HCC model. In the clinical study, six advanced HCC patients refractory to chemotherapy were enrolled. The initial dose of DFX was 10 mg/kg per day and was increased by 10 mg/kg per day every week, until the maximum dose of 30 mg/kg per day. The duration of a single course of DFX therapy was 28 consecutive days. In the event of dose-limiting toxicity(according to the Common Terminology Criteria for Adverse Events v.4.0), DFX dose was reduced.RESULTS Administration of DFX inhibited the proliferation of hepatoma cell lines and induced the activation of caspase-3 in a dose-dependent manner in vitro. In the murine model, DFX treatment significantly suppressed the development of liver tumors(P < 0.01), and significantly upregulated the mR NA expression levels of hepcidin(P < 0.05), transferrin receptor 1(P < 0.05), and hypoxia inducible factor-1α(P < 0.05) in both tumor and non-tumor tissues, compared with control mice. In the clinical study, anorexia and elevated serum creatinine were observed in four and all six patients, respectively. However, reduction in DFX dose led to decrease in serum creatinine levels in all patients. After the first course of DFX, one patient discontinued the therapy. We assessed the tumor response in the remaining five patients; one patient exhibited stable disease, while four patients exhibited progressive disease. The one-year survival rate of the six patients was 17%.CONCLUSION We demonstrated that DFX inhibited HCC in the basic study, but not in the clinical study due to dose-limiting toxicities. | Issei Saeki Naoki Yamamoto Takahiro Yamasaki Taro Takami Masaki Maeda Koichi Fujisawa Takuya Iwamoto Toshihiko Matsumoto Isao Hidaka Tsuyoshi Ishikawa Koichi Uchida Kenji Tani Isao Sakaida | 2016 | World Journal of Gastroenterology2016，22，40： | 3 |
| 10 | Effects of ghrelin administration during chemotherapy with advanced esophageal cancer patients显示文摘 | Yuichiro Hiura Shuji Takiguchi Kazuyoshi Yamamoto Tsuyoshi Takahashi Yukinori Kurokawa Makoto Yamasaki Kiyokazu Nakajima Hiroshi Miyata Yoshiyuki Fujiwara Masaki Mori Kenji Kangawa Yuichiro Doki | 2012 | Cancer2012，，19： | 2 |
| 11 | Response surface method for modeling the removal of carbon dioxide from a simulated gas using water absorption enhanced with a liquid-film-forming device显示文摘This paper presents the results from using a physical absorption process to absorb gaseous CO_2mixed with N_2using water by producing tiny bubbles via a liquid-film-forming device(LFFD)that improves the solubility of CO_2in water.The influence of various parameters—pressure,initial CO_2concentration,gas-to-liquid ratios,and temperature—on the CO_2removal efficiency and its absorption rate in water were investigated and estimated thoroughly by statistical polynomial models obtained by the utilization of the response surface method(RSM)with a central composite design(CCD).Based on the analysis,a high efficiency of CO_2capture can be reached in conditions such as low pressure,high CO_2concentration at the inlet,low gas/liquid ratio,and low temperature.For instance,the highest removal efficiency in the RSM–CCD experimental matrix of nearly 80%occurred for run number 20,which was conducted at 0.30 MPa,CO_2concentration of 35%,gas/liquid ratio of 0.71,and temperature of 15°C.Furthermore,the coefficients of determination,R^2,were 0.996 for the removal rate and 0.982 for the absorption rate,implying that the predicted values computed by the constructed models correlate strongly and fit well with the experimental values.The results obtained provide essential information for implementing this method properly and effectively and contribute a promising approach to the problem of CO_2capture in air pollution treatment. | Diem-Mai Kim Nguyen Tsuyoshi Imai Thanh-Loc Thi Dang Ariyo Kanno Takaya Higuchi Koichi Yamamoto Masahiko Sekine | 2018 | Journal of Environmental Sciences2018，30，3： | 2 |
| 12 | The CagA protein of Helicobacter pylori suppresses the functions of dendritic cell in mice显示文摘 | Hiroshi Tanaka Masaru Yoshida Shin Nishiumi Naomi Ohnishi Kazuki Kobayashi Koji Yamamoto Tsuyoshi Fujita Masanori Hatakeyama Takeshi Azuma | 2010 | Archives of Biochemistry and Biophysics2010，，1： | 2 |
| 13 | Complications of Hepatectomy for Hilar Cholangiocarcinoma显示文摘 | Masato Nagino Junichi Kamiya Katsuhiko Uesaka Tsuyoshi Sano Hideo Yamamoto Naokazu Hayakawa Michio Kanai Yuji Nimura | 2001 | World Journal of Surgery2001，，10： | 2 |
| 14 | Thermal Analysis of Resin Composites with Ellipsoidal Filler Considering Thermal Boundary Resistance显示文摘The effective thermal conductivity of composites with ellipsoidal fillers is analyzed by using a homogenization method that is able to represent the microstructure precisely.In this study,various parameters such as the volume fraction,shape,and distribution of the filler are quantitatively estimated to understand the mechanisms of heat transfer in the composite.First,thermal boundary resistance between resin and filler is important for obtaining composites with higher thermal conductivity.Second,the anisotropy of the effective thermal conductivity arises from contact between filler in the case of ellipsoidal filler and produces lower thermal resistance.Finally,the filler network and thermal resistance are essential for the heat transfer in composites because the path of thermal conduction is improved by contact between neighboring filler particles. | Yusuke Asakuma Tsuyoshi Yamamoto | 2016 | Journal of Thermal Science2016，25，5： | 2 |
| 15 | Short- and long-term outcomes of endoscopic papillary large balloon dilation with or without sphincterotomy for removal of large bile duct stones显示文摘 | Hirofumi Kogure Takeshi Tsujino Hiroyuki Isayama Naminatsu Takahara Rie Uchino Tsuyoshi Hamada Koji Miyabayashi Suguru Mizuno Dai Mohri Yoko Yashima Kazumichi Kawakubo Takashi Sasaki Natsuyo Yamamoto Yousuke Nakai Kenji Hirano Naoki Sasahira Minoru Tada K | 2013 | Scandinavian Journal of Gastroenterology2013，，1： | 1 |
| 16 | Relation of risk factors with response to carvedilol in heart failure with preserved ejection fraction – A report from the Japanese Diastolic Heart Failure Study (J-DHF)显示文摘 | Kazuhiro Yamamoto Hideki Origasa Yasushi Suzuki Toshiaki Takahashi Tsuyoshi Shinozaki Tomoyuki Watanabe Yasushi Sakata Chisato Izumi Kayano Taira Masatsugu Hori | 2013 | Journal of Cardiology2013，，： | 1 |
| 17 | Multielement compositions of marine phytoplankton samples from coastal areas of japan by instrumental neutron activation analysis显示文摘 | Toshiyuki Masuzawa Teruyuki Suzuki Kayoko Seki Tsuyoshi Kosugi Yuriko Hibi Mineko Yamamoto Jitsuya Takada Rokuji Matsushita Mitsuru Yanada | 1999 | Biological Trace Element Research1999，，1： | 1 |
| 18 | Role of double-balloon endoscopy in the diagnosis of small-bowel tumors: the first Japanese multicenter study显示文摘 | Keigo Mitsui Shu Tanaka Hironori Yamamoto Tsuyoshi Kobayashi Akihito Ehara Tomonori Yano Hidemi Goto Hiroshi Nakase Shinji Tanaka Toshiyuki Matsui Mitsuo Iida Kentaro Sugano Choitsu Sakamoto | 2009 | Gastrointestinal Endoscopy2009，，3： | 1 |
| 19 | Downregulation of microRNA-34 induces cell proliferation and invasionof human mesothelial cells显示文摘 | Norimitsu Tanaka Shinichi Toyooka Junichi Soh Kazunori Tsukuda Kazuhiko Shien Masashi Furukawa Takayuki Muraoka Yuho Maki Tsuyoshi Ueno Hiromasa Yamamoto Hiroaki Asano Takemi Otsuki Shinichiro Miyoshi | 2013 | Oncology Reports2013，，6： | 1 |
| 20 | Right trisegment portal vein embolization for biliary tract carcinoma: Technique and clinical utility显示文摘 | Masato Nagino Junichi Kamiya Michio Kanai Katsuhiko Uesaka Tsuyoshi Sano Hideo Yamamoto Naokazu Hayakawa Yuji Nimura | 2000 | Surgery2000，，2： | 1 |
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