检索结果-南通市图书馆

Polyamine-Polymeric Micelle Hybrid Hydrogel: Microscopic Properties of Crosslinkers Affecting Macroscopic Rheological Properties of Hydrogel

引用

Journal of Biomaterials and Nanobiotechnology 2015年第1期6卷 36-44页

作者： Chikara Yoshida Tomoki Ito Ryosuke Anzai kengo fukuda Keita Kinoshita Seiichi Sonotaki Taku Takami Yoshihiko Murakami Department of Organic and Polymer Materials Chemistry Faculty of Engineering Tokyo University of Agriculture and Technology Tokyo Japan

We have developed a hybrid hydrogel that is formed from a crosslinkable polymeric micelle and a polyamine. Under optimal conditions, the hydrogel rapidly formed in one second after a crosslinkable polymeric micelle solution was mixed with a polyamine solution. We could change the hydrogel’s gelation properties, such as the storage modulus and gelation time by tuning the molecular weights of block copolymers and by tuning the pH of the dissolving-solvent of the hydrogel’s constituent components. Furthermore, we have clarified here that the structural difference among the micelles acting as crosslinkers can affect the gelation properties of the hydrogel. According to our findings, the hydrogel that was formed from the polymeric micelles possessing a highly packed (i.e., well-entangled or crosslinked) inner core exhibited a higher storage modulus than the hydrogel that was formed from the polymeric micelles possessing a lowly packed structure. Our results demonstrate that a microscopic structural difference among crosslinkers can induce a macroscopic change in the properties of the resulting hydrogels. For medical applications, the hydrogel proposed in the present paper can encapsulate the hydrophobic compounds in crosslinkers (polymeric micelles) so that the hydrogel can be available as the biomaterial for their sustained release.

关键词： Hydrogel Polymeric Micelle Self-Assembly Crosslinker Block Copolymer

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

Clinical efficacy and safety of second line and salvage aflibercept for advanced colorectal cancer in Akita prefecture

引用

World Journal of Gastrointestinal Oncology 2021年第4期13卷 295-304页

作者： Taichi Yoshida Kentaro Takahashi kengo Shibuya Osamu Muto Yuko Yoshida Daiki Taguchi Kazuhiro Shimazu Koji fukuda Fuminori Ono Kyoko Nomura Hiroyuki Shibata Department of Clinical Oncology Akita University Graduate School of MedicineAkita 010-8543Japan Department of Gastroenterological Surgery Nakadori General HospitalAkita 010-8577Japan Department of Gastroenterology Akita Kousei MedicalAkita 010-0948Japan Department of Medical Oncology Akita Red Cross HospitalAkita 010-1495Japan Department of Surgery Omagari Kousei Medical CenterAkita 014-0027Japan Department of Environmental Health Science and Public Health Akita University Graduate School of MedicineAkita 010-8543Japan

BACKGROUND Angiogenesis inhibitors(AIs)combination with cytotoxic chemotherapy is a promising treatment for patients with colorectal cancer(CRC).Aflibercept(AFL)is an option for second-line treatment of CRC,according to the‘VELOUR’***,we can choose from three AIs,including bevacizumab,ramucirumab,and *** AIs can be used in subsequent treatment because of their distinctive mechanisms of *** addressed the uncertainty regarding AFL efficacy and safety in heavily-treated patients by comparing outcomes of survival treatment with second-line *** To determine and compare the efficacy and safety profiles of AFL in the secondline and salvage therapy *** Clinical data of 41 patients with advanced CRC who received intravenous AFL combined with the folinic acid-fluorouracil-irinotecan(FOLFIRI)regimen were collected retrospectively from six institutions in Japan,for the period from May 2017 to March *** characteristics collected included age,sex,tumor location,RAS and RAF status,metastatic sites,number of previous treatment cycles,therapeutic response,adverse events,duration of previous AI treatment,and survival *** end points were time to AFL treatment failure(aTTF)and median survival time post-AFL(aMST).Statistical analyses were performed to compare the efficacy and safety in the second-line setting with those of the salvage therapy setting,which was defined as the days since the end of secondline *** All 41 patients who received AFL+FOLFIRI for advanced CRC had metastatic or unresectable ***-two patients received AFL in the second-line setting and nineteen in the salvage therapy *** patient characteristics were similar in the two groups,except for two *** median duration of the previous AI administration was shorter in the second-line patients compared with that in the salvage therapy patients(144 d vs 323 d,P=0.006).In the second-line and salvage therapy groups,the objectiv

关键词： Colorectal cancer Aflibercept Second-line chemotherapy Folinic acidfluorouracil-irinotecan Palliative chemotherapy Observational cohort study

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

Survival, Proliferation and Cell Cycle of Swine Fibroblast after Infection with Salmonella enterica

引用

Advances in Microbiology 2016年第13期6卷 942-952页

作者： Mizuki Masuda Yijie Guo kengo Kuroda Jun Xu Hiroshi Yoneyama Tomokazu fukuda Bernard Mudenda Hang’ombe Katsuya Okuno Junko Nishimura Emiko Isogai Laboratory of Animal Microbiology Graduate School of Agricultural Science Tohoku University Sendai Japan Department of Immunobiology and Pathogenic Biology Medical School of Xi’an Jiaotong University Xi’an China Laboratory of Cell Engineering and Molecular Genetics Faculty of Science and Engineering Iwate University Morioka Japan Department of Clinical Microbiology School of Veterinary Medicine University of Zambia Lusaka Zambia Laboratory of Nutrition and Life Sciences Department of Biotechnology and Environmental Engineering Faculty of Engineering Hachinohe Institute of Technology Hachinohe Japan

Food-borne salmonellosis continues to be a major health concern worldwide. Carry-contamination of Salmonella frequently occurs in meat production. We focused on cell dynamics of swine fibroblasts after infection with Salmonella enterica serovar Enteritidis and Typhimurium, because fibroblast can be a target cell for Salmonella latent infection. It was found that both S. Enteritidis and S. Typhimurium were able to adhere and invade to swine fibroblasts. The proliferations in fibroblasts were different between each serovar. S. Enteritidis reached to the maximum at 24 hr after infection while S. Typhimurium did not. In addition, the decrease in the G0/G1 phase cells and increase in G2/M phase cells on the fibroblast were observed by both Salmonella infection. Cell death including apoptosis in the cells was inhibited by the infection of Salmonella. These results suggest that nontyphoidal Salmonella can survive for the long term by modifying bacterial cell proliferation and preventing cell death of host cells.

关键词： Salmonella enterica Fibroblast Swine Cell Death Cell Cycle

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

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

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：