检索结果-南通市图书馆

Dual effect of pre-ischemic administration of TNF-alpha on myocardial infarct size

World Journal of Cardiovascular Diseases 2013年第5期3卷 21-25页

作者： Thuy Tran Quang Raja Hatem guy rousseau Audrey-Anne Gosselin Erick Schampaert Thierry Charron Centre de Recherche Hopital du Sacré-Caeur de Montréal Montréal Canada Centre de Recherche Hopital du Sacré-Caeur de Montréal Montréal Canada Département de Pharmacologie Université de Montréal Montréal Canada Centre de Recherche Hopital du Sacré-Caeur de Montréal Montréal Canada Département de Cardiologie Hopital du Sacré-Caeur de Montréal Montréal Canada Département de Cardiologie Hopital du Sacré-Caeur de Montréal Montréal Canada

Tumour necrosis factor-α is a cytokine released during myocardial infarction. According to the literature, the effect of TNFα on myocardial infarction is controversial, especially when administered before the ischemic period. The deleterious effects of TNFα seem to be related to the triggering of apoptosis. This study has been designed to determine if different doses of TNFα, administered before the ischemic period, have the same effect on infarct size and on activation of caspase-3 and-8, two enzymes involved in apoptosis. Four groups, using a porcine model of myocardial infarction, have been used: placebo and TNFα (0.1 μg/kg;1 μg/kg and 3 μg/kg). All administered 15 minutes before a 50 minutes occlusion of the left anterior descending artery. Myocardial infarct size has been determined at 3 hours of reperfusion. In a subgroup of animals, reperfusion period has been limited to 15 min to determine the activity of caspase-3 and-8 by spectrofluorometry. Results indicated that infarct size is significantly smaller in groups 0.1 μg/kg and 1 μg/ kg as compared to the placebo group. In contrast, the 3 μg/kg group presented an infarct size similar to the placebo group. Activity of caspase-3 and-8 is reduced in the ischemic region in groups 0.1 and 1 μg/ kg as compared to the placebo group whereas activity in the 3 μg/kg group was similar to the placebo. The results obtained indicated that a low dose of TNFα administered before the ischemic period reduces infarct size, whereas the cardioprotection is lost with the high dose.

关键词： TNF-Alpha Myocardial Infarct Size Protection Apoptosis Caspase-8

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

Activation of the pattern recognition receptor NOD1 augments colon cancer metastasis

引用

Protein & Cell 2020年第3期11卷 187-201页

作者： Henry Y.Jiang Sara Najmeh guy Martel Elyse MacFadden-Murphy Raquel Farias Paul Savage Arielle Leone Lucie Roussel Jonathan Cools-Lartigue Stephen Gowing Julie Berube Betty Giannias France Bourdeau Carlos HFChan Jonathan D.Spicer Rebecca McClure Morag Park Simon rousseau Lorenzo E.Ferri Thoracic and Upper GI Cancer Research Laboratories Research Institute of McGill University Health Centre1001 Decarie BoulevardBlock ELab#E02-4134MontrealQC H4A 3J1Canada Department of Experimental Surgery and Department of Surgery McGill University1650 Cedar AvenueMontrealQC H3G 1A4Canada Meakins-Christie Laboratories Research Institute of McGill University Health Centre1001 Decarie BoulevardMontrealQC H4A 3J1Canada The Rosalind and Morris Goodman Cancer Research Centre McGill University1160 Pine AvenueMontrealQC H3A 1A3Canada Department of Surgery Roy J.and Lucille A.Carver College of MedicineUniversity of IowaUniversity of Iowa Hospitals and Clinics200 Hawkins DriveIowa CityIA 52242USA Department of Pathology Health Sciences North41 Ramsey Lake RoadSudburyONCanada

While emerging data suggest nucleotide oligomerization domain receptor 1(NOD1),a cytoplasmic pattern recognition receptor,may play an important and complementary role in the immune response to bacterial infection,its role in cancer metastasis is entirely ***,we sought to determine the effects of NOD1 on ***1 expression in paired human primary colon cancer,human and murine colon cancer cells were determined using immunohistochemistry and immunoblotting(WB).Clinical significance of NOD1 was assessed using TCGA survival data.A series of in vitro and in vivo functional assays,including adhesion,migration,and metastasis,was conducted to assess the effect of NOD1.C12-iE-DAP,a highly selective NOD1 ligand derived from gram-negative bacteria,was used to activate ***130,a specific NOD1 inhibitor,was used to block C12-iE-DAP *** knockdown(KD)of NOD1 in human colon cancer cells(HT29)was constructed with shRNA lentiviral transduction and the functional assays were thus ***,the predominant signaling pathway of NOD1-activation was identified using WB and functional assays in the presence of specific kinase *** data demonstrate that NOD1 is highly expressed in human colorectal cancer(CRC)and human and murine CRC cell ***,we demonstrate that this increased NOD1 expression negatively impacts survival in patients with ***,we identify NOD1 activation by C12-iE-DAP augments CRC cell adhesion,migration and *** effects are predominantly mediated via the p38 mitogen activated protein kinase(MAPK)*** is the first study implicating NOD1 in cancer metastasis,and thus identifying this receptor as a putative therapeutic target.

关键词： NOD1 iE-DAP ML130 colon cancer metastasis cancer-extracellular matrix adhesion cancer migration p38 MAPK activation intravital microscopy survival analysis

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

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

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

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：