检索结果-南通市图书馆

Luminescence study of europium(III) tris(β-diketonato)/phosphonate complexes in chloroform

Journal of Rare Earths 2008年第2期26卷 185-191页

作者： Stefan Lis Zbigniew Piskula Krzysztof Staninski Sayaka Tamaki Masayuki Inoue yuko hasegawa Department of Rare Earths Faculty of Chemistry Adam Mickiewicz University Grunwaldzka 6 Department of Chemistry Faculty of Science Science University of Tokyo

The extraction of Eu（Ⅲ） with β-diketone, HA, and monodentate or bidentate Lewis bases, B, into chloroform and the luminescence properties of the extracted species were studied. Pivaloyltrifluoroacetone, Hpta, and 2-thenoyltfifluoroacetone, Htta, were used as the β-diketones. The Lewis bases, B, were tetraethyl methylene diphosphonate, POPO, which was bidentate, and diethyl benzylphosphonate, PhPO which was monodentate. Based on the extraction data, the stability constants, log β, of the first complexes between tfis（β-diketonato）Eu（Ⅲ） and the phosphonate, EuA3B, were determined to be 6.0 for the POPO complex and 3.40 for the PhPO complex. The Eu（Ⅲ） luminescence intensity in the EuA3POPO was larger than EuA3 where A was either pta or tta at similar concentrations of Eu（Ⅲ）, while that in Eu（pta）3PhPO was stronger than EuA3; however, in Eu（tta）3PhPO, it was weaker than Eu（tta）3. The POPO functions as a sensitizer, and the PhPO functions as a quencher for the tta chelate and as a sensitizer for the pta chelate. From the lifetime and quantum yield, φ, of the Eu（Ⅲ） luminescence in the complexes as well as the observation of the extractability of Eu（Ⅲ） with the Hpta and the phosphonates and of the luminescence spectra of the complexes, it was confirmed that the extraction of Eu（Ⅲ） was remarkably enhanced with a β-diketonate and a strong Lewis base, and also the ternary complex that was formed as the extracted species, showed luminescence enhancement. This phenomenon may be due the formation of a strong bond between the Eu（Ⅲ） and the strong Lewis base leading to more hydrophobicity in the extracted species and also to more effective energy transfer from the Lewis base to the Eu（Ⅲ）. It was not significant whether the donor atoms were N or O.

关键词： tris(β-diketonato)Eu(Ⅲ) extraction luminescence phosphonate ligands rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

SYNERGISTIC EXTRACTION OF EUROPIUM（Ⅲ） WITH 2-THENOYLTRIFLUOROACETONE AND A LEWIS BASE AND THE APPLICATION TO PREPARATION OF BINUCLEAR COMPLEXES

SYNERGISTIC EXTRACTION OF EUROPIUM（Ⅲ） WITH 2-THENOYLTRIFL...

引用

International Solvent Extraction Conference 2005

作者： yuko hasegawa Satoshi Kumaki Koichiro Tanaka Department of Chemistry Faculty of Science Science University of Tokyo Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan Department of Chemistry Faculty of Science Science University of Tokyo Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan Department of Chemistry Faculty of Science Science University of Tokyo Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan

In the extraction of lanthanoids(III) with 2-thenoyltrifluoroacetone (Htta) and a Schiff base complexed copper(II), the distribution ratio of europium(III) has been measured as a function of pH, Htta

关键词： Synergistic extraction Schiff base Cu(saltn) lanthanoids(III) stability constants binuclear complexes

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Does laparoscopic resection for colorectal cancer liver metastasis have a long-term oncologic advantage?

引用

Hepatobiliary Surgery and Nutrition 2021年第2期10卷 246-248页

作者： Yasushi hasegawa Minoru Kitago Yuta Abe yuko Kitagawa Department of Surgery Keio University School of MedicineTokyoJapan

The long-term advantages of laparoscopic liver resection(LLR)over open liver resection(OLR)for colorectal cancer liver metastasis(CLM)have not been *** et al.(1)recently published an interesting article in the Annals of Surgery,titled“Survival Advantage of Laparoscopic Versus Open Resection for Colorectal Liver Metastases:A Meta-analysis of Individual Patient Data from Randomized Trials and Propensity-score Matched Studies.”The authors performed a meta-analysis of individual participant data from two randomized trials and thirteen propensity score-matched studies that compared long-term outcomes between patients undergoing LLR and OLR for CLM.A total of 1,275 patients who underwent LLR and 1,873 patients who underwent OLR were *** found that LLR was associated with a lower risk of death and concluded that LLR had a long-term survival benefit compared to OLR.

关键词： metastasis Surgery liver

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computed tomography attenuation values of ascites are helpful to predict perforation site

引用

World Journal of Gastroenterology 2015年第5期21卷 1573-1579页

作者： Ryo Seishima Koji Okabayashi Hirotoshi hasegawa Masashi Tsuruta Hiroki Hoshino Toru Yamada yuko Kitagawa Department of Surgery Keio University School of MedicineTokyo 1608582Japan

AIM:To evaluate the effect of computed tomography(CT) attenuation values of ascites on gastrointestinal(GI) perforation site ***:The CT attenuation values of the ascites from 51 patients with GI perforations were measured by volume rendering to calculate the mean *** effect of the CT attenuation values of the ascites on perforation site prediction and postoperative complications was ***:Of 24 patients with colorectal perforations,the CT attenuation values of ascites were significantly higher than those in patients with perforations at other sites [22.5 Hounsfield units(HU) vs 16.5 HU,respectively,P = 0.006].Colorectal perforation was significantly associated with postoperative complications(P = 0.038).The prediction rate of colorectal perforation using attenuation values as an auxiliary diagnosis improved by 9.8% compared to that of CT findings alone(92.2% vs 82.4%).CONCLUSION:The CT attenuation values of ascites could facilitate the prediction of perforation sites and postoperative complications in GI perforations,particularly in cases in which the perforation sites are difficult to predict by CT findings alone.

关键词： Perforation site prediction Gastrointestinal perfo

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Phosphate Transporter PHT4;6 Is a Determinant of Salt Tolerance that Is Localized to the Golgi Apparatus of Arabidopsis

引用

Molecular Plant 2009年第3期2卷 535-552页

作者： Beatriz Cubero yuko Nakagawa Xing-Yu Jiang Ken-Ji Miura Fang Li Kashchandra G. Raghothama Ray A. Bressan Paul M. hasegawa Jose M. Pardo Instituto de Recursos Naturales y Agrobiologia Consejo Superior de Investigaciones Cientificas Avda Reina Mercedes 10 Sevilla-41012 Spain Center for Environmental Stress Physiology Department of Horticulture and Landscape Architecture Purdue University West Lafayette IN 47907-2010 USA Present address: Ichinoseki National College of Technology Department of Chemical Engineering Takanashi Hagisyo Ichinoseki 021-8511 Japan Present address: Graduate School of Life and Environmental Sciences Gene Research Center 220 1-1-1 Ten-nou dai University of Tsukuba Tsukuba 305-8572 Japan

Insertion mutations that disrupt the function of PHT4;6 （At5g44370） cause NaCI hypersensitivity of Arabidopsis seedlings that is characterized by reduced growth of the primary root, enhanced lateral branching, and swelling of root tips. Mutant phenotypes were exacerbated by sucrose, but not by equiosmolar concentrations of mannitol, and attenuated by low inorganic phosphate in the medium. Protein PHT4;6 belongs to the Major Facilitator Superfamily of permeases that shares significant sequence similarity to mammalian type-I Pi transporters and vesicular glutamate transporters, and is a member of the PHT4 family of putative intracellular phosphate transporters of plants. PHT4;6 localizes to the Golgi membrane and transport studies indicate that PHT4;6 facilitates the selective transport of Pi but not of chloride or inorganic anions. Phenotypic similarities with other mutants displaying root swelling suggest that PHT4;6 likely functions in protein N-glycosylation and cell wall biosynthesis, which are essential for salt tolerance. Together, our results indicate that PHT4;6 transports Pi out of the Golgi lumenal space for the re-cycling of the Pi released from glycosylation processes.

关键词： Phosphate transport Golgi glycosylation salt stress.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Aerobic Exercise on the Intramuscular Lipid and Glycogen Content of Fiber Types in Soleus Muscles of Non-Alcoholic Steatohepatitis Model Rats

引用

Open Journal of Endocrine and Metabolic Diseases 2015年第10期5卷 131-137页

作者： Miyako Mochizuki Emi Hayashi Atsushi Yoshimura yuko Toyoda Lin Mei Noboru hasegawa Kyoto Bunkyo Junior College Kyoto Japan Department of Health and Nutrition Gifu Women’s University Gifu Japan Material Science and Engineering Nagoya Institutes of Technology Nagoya Japan School of Food and Biological Engineering Jiangsu University Zhenjiang China Department of Health and Medical Sciences Ishikawa Prefectural Nursing University Ishikawa Japan

We studied the effects of exercise on muscle mitochondria, and lipid and glycogen content in non-alcoholic steatohepatitis (NASH) model rats. Male Sprague-Dawley rats were randomly separated into 3 groups: the control group was fed standard chow;the NASH group was fed a methionine-choline-deficient high-fat diet (MCD);the NASH-exercise group was fed the MCD and exercised three times a week. Exercise training consisted of continuous running for thirty minutes at a 13 m/min, 6° slope on a motor-driven rodent treadmill for 6 weeks. Mitochondria content in NASH group decreased in the both fiber types compared with those of the control group. As compared between the NASH and NASH-exercise groups, however, exercise not only promoted significant improvements in liver fibrosis and cirrhosis and triglyceride (TG) content but also increased mitochondria content in type I muscle fiber in particular. These data suggest that exercise improved hepatic steatosis in NASH model rats and can prevent the progression of NASH.

关键词： Metabolic Disease Non-Alcoholic Steatohepatitis Intramuscular Lipid Triglyceride Glycogen Histopathological Fiber Types Aerobic Exercise

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Helicobacter cinaedi bacteremia with cellulitis after ABO-incompatible living-donor liver transplantation: Case report

引用

World Journal of Gastroenterology 2015年第25期21卷 7911-7915页

作者： Kohei Mishima Hideaki Obara Kayoko Sugita Masahiro Shinoda Minoru Kitago Yuta Abe Taizo Hibi Hiroshi Yagi Kentaro Matsubara Takehiko Mori Yaoko Takano Hiroshi Fujiwara Osamu Itano Naoki hasegawa Satoshi Iwata yuko Kitagawa Department of Surgery Keio University School of Medicine Center for Infectious Diseases and Infection Control Keio University School of Medicine Division of Hematology the Department of Medicine Keio University School of Medicine Department of Infectious Diseases Keio University School of Medicine

Helicobacter cinaedi(H. cinaedi), a Gram-negative spiral-shaped bacterium, is an enterohepatic nonHelicobacter pylori Helicobacter species. We report the first case of H. cinaedi bacteremia with cellulitis after liver transplantation. A 48-year-old male, who had been a dog breeder for 15 years, underwent ABO-incompatible living-donor liver transplantation for hepatitis C virus-induced decompensated cirrhosis using an anti-hepatitis B core antibody-positive graft. The patient was preoperatively administered rituximab and underwent plasma exchange twice to overcome blood type incompatibility. After discharge, he had been doing well with immunosuppression therapy comprising cyclosporine, mycophenolate mofetil, and steroid according to the ABO-incompatible protocol of our institution. However, 7 mo after transplantation, he was admitted to our hospital with a diagnosis of recurrent cellulitis on the left lower extremity, and H. cinaedi was detected by both blood culture and polymerase chain reaction analysis. Antibiotics improved his symptoms, and he was discharged at day 30 after admission. Clinicians should be more aware of H. cinaedi in immunocompromised patients, such as ABO-incompatible transplant recipients.

关键词： Helicobacter cinaedi Bacteremia Cellulitis Liver transplantation Hepatitis C Living-donor ABOincompatible HBc-Ab-positive donor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Peritoneal dissemination of pancreatic cancer caused by endoscopic ultrasound-guided fine needle aspiration:A case report and literature review

引用

World Journal of Gastroenterology 2021年第3期27卷 294-304页

作者： Hideaki Kojima Minoru Kitago Eisuke Iwasaki Yohei Masugi Yohji Matsusaka Hiroshi Yagi Yuta Abe Yasushi hasegawa Shutaro Hori Masayuki Tanaka Yutaka Nakano Yusuke Takemura Seiichiro Fukuhara Yoshiyuki Ohara Michiie Sakamoto Shigeo Okuda yuko Kitagawa Department of Surgery Keio University School of MedicineTokyo 160-8582Japan Division of Gastroenterology and Hepatology Department of Internal MedicineKeio University School of MedicineTokyo 160-8582Japan Department of Pathology Keio University School of MedicineTokyo 160-8582Japan Department of Radiology Keio University School of MedicineTokyo 160-8582Japan

BACKGROUND Endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)is a biopsy technique widely used to diagnose pancreatic tumors because of its high sensitivity and *** needle-tract seeding caused by EUS-FNA has been recently reported,dissemination of pancreatic cancer cells is generally considered to be a rare complication that does not affect patient ***,the frequency of dissemination and needle-tract seeding appears to have been *** present a case of peritoneal dissemination of pancreatic cancer due to preoperative *** SUMMARY An 81-year-old man was referred to the Department of Surgery of our hospital in Japan owing to the detection of a pancreatic mass on computed tomography during medical ***-gastric EUS-FNA revealed that the mass was an adenocarcinoma;hence laparoscopic distal pancreatectomy with lymphadenectomy was *** intraoperative peritoneal dissemination and liver metastasis were visually detected,and pelvic lavage cytology was negative for carcinoma *** postoperative surgical specimen was negative for carcinoma cells at the dissected margin and the cut end margin;however,pathological findings revealed adenocarcinoma cells on the peritoneal surface proximal to the needle puncture site,and the cells were suspected to be disseminated via ***,the patient received adjuvant therapy with S-1(tegafur,gimeracil,and oteracil potassium);however,computed tomography performed 5 mo after surgery revealed liver metastasis and cancerous *** patient received palliative therapy and died 8 mo after the *** The indications of EUS-FNA should be carefully considered to avoid iatrogenic dissemination,especially for cancers in the pancreatic body or tail.

关键词： Case report Pancreatic carcinoma Endoscopic ultrasound-guided fine needle aspiration Peritoneal dissemination Cancerous peritonitis Biopsy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Distribution of HBV genotypes among HBV carriers in Benin:phylogenetic analysis and virological characteristics of HBV genotype E

引用

World Journal of Gastroenterology 2005年第41期11卷 6410-6415页

作者： Kei Fujiwara Yasuhito Tanaka Etsuro Orito Tomoyoshi Ohno Takanobu Kato Kanji Sugihara Izumi hasegawa Mayumi Sakurai Kiyoaki Ito Atsushi Ozasa yuko Sakamoto Isao Arita Ahmed El-Gohary Agossou Benoit Sophie I Ogoundele-Akplogan Namiko Yoshihara Ryuzo Ueda Masashi Mizokami Department of Internal Medicine and Molecular Science Nagoya City University Graduate School of Medical Sciences NagoyaJapan Department of Clinical Molecular Informative Medicine Nagoya City University Graduate School of Medical Sciences NagoyaJapan AIDS Research Center National Institute of Infectious Disease TokyoJapan Agency for Cooperation in International Health Kumamoto Japan Clinical Pathology Department Faculty of Medicine Suez Canal UniversityIsmailiaEgypt Central National Blood Transfusion Center Cotonou Benin Hematology Lab-CNHUC Cotonou Benin

AIM: To determine the distribution of Hepatitis B virus (HBV) genotypes in Benin, and to clarify the virological characteristics of the dominant ***: Among 500 blood donors in Benin, 21 HBsAg-positive donors were enrolled in the study. HBV genotypes were determined by enzyme immunoassay and restriction fragment length polymorphism. Complete genome sequences were determined by PCR and direct ***: HBV genotype E (HBV/E) was detected in 20/21 (95.2%), and HBV/A in 1/21 (4.8%). From the age-specific prevalence of HBeAg to anti-HBe seroconversion (SC) in 19 HBV/E subjects, SC was estimated to occur frequently in late teens in HBV/*** comparison of four complete HBV/E genomes from HBeAg-positive subjects in this study and five HBV/E sequences recruited from the database revealed that HBV/E was distributed throughout West Africa with very low genetic divers ity (nucleotide homology 96.7-99.2%).Based on the sequences in the basic core promoter (BCP)to precore region of the nine HBV/E isolates compared to those of the other genotypes, a nucleotide substitution in the BCP, G1757A, was observed in HBV/***: HBV/E is predominant in the Republic of Benin, and SC is estimated to occur in late teens in HBV/E. The specific nucleotide substitution G1757A in BCP, which might influence the virological characteristics,is observed in HBV/E.

关键词： HBV genotype West Africa Basic corepromoter

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Maintenance treatment with infliximab for ulcerative ileitis after intestinal transplantation: A case report

引用

World Journal of Clinical Cases 2021年第19期9卷 5270-5279页

作者： Takumi Fujimura Yohei Yamada Tomoshige Umeyama Yumi Kudo Hiroki Kanamori Teizaburo Mori Takahiro Shimizu Mototoshi Kato Miho Kawaida Naoki Hosoe Yasushi hasegawa Kentaro Matsubara Naoki Shimojima Masahiro Shinoda Hideaki Obara Makoto Naganuma yuko Kitagawa Ken Hoshino Tatsuo Kuroda Department of Pediatric Surgery National Saitama HospitalWako ShiSaitama 351-0102Japan Department of Pediatric Surgery Keio University School of MedicineTokyo 160-8582Japan Department of Pathology Keio University School of MedicineTokyo 160-8582Japan Center for Diagnostic and Therapeutic Endoscopy Keio University School ofMedicineTokyo 160-8582Japan Department of Surgery Keio University School of MedicineTokyo 160-8582Japan Digestive Diseases Center International University of Health and WelfareMita HospitalTokyo 108-8329Japan Department of Gastroenterology and Hepatology Keio University School of MedicineTokyo 160-8582Japan

BACKGROUND Evidence has been published on the successful applications of the anti-tumor necrosis factor alpha antibody infliximab,such as induction therapy,salvage treatment for acute cellular rejection,and treatment for chronic ulcerative inflammation,in intestinal transplant ***,the optimal protocol for the effective use of infliximab remains largely undetermined due to scarcity of available clinical *** report a continuative application of infliximab as maintenance therapy for recurrent chronic ulcerative ileitis in a recipient of isolated intestinal transplantation(ITx).CASE SUMMARY The patient was a 11-year-old boy with intestinal motility disorder classified as a hypogenic type of intestinal *** patient underwent living-donor related intestinal *** immunosuppression regimen consisted of daclizumab,tacrolimus,and *** he did not show rejection while on tacrolimus monotherapy,routine screening endoscopy showed several ulcerative lesions in the distal end of the graft 2 years after the intestinal *** work up to evaluate the progression of anemia revealed stenosis with ulcerative inflammatory changes and multiple longitudinal ulcers in the *** the endoscopic findings suggested ulcerative lesions in Crohn’s disease,infliximab treatment was *** with infliximab and a small dose of oral prednisolone afforded successful withdrawal of total parenteral nutrition and maintenance of a well-functioning graft without infectious complications for 5 years since the administration of the first dose of *** Infliximab is effective as maintenance therapy for recurrent chronic ulcerative ileitis in an isolated ITx patient.

关键词： Intestinal transplantation Chronic ulcer Infliximab Crohn’s disease Tumor necrosis factor alpha Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：