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学科主题临床医学
Effect of Angiotensin II on STAT3 mediated atrial structural remodeling
Zheng, L. -Y.1; Zhang, M. -H.1; Xue, J. -H.1; Li, Y.1; Nan, Y.1; Li, M. -J.1; Wang, J.2; Du, X. -P.1
关键词Atrial Fibrillation Atrial Structural Remodeling Angiotensin Ii Signal Transducers And Activators Of Transcription (Stat)
刊名EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES
2014-08-01
18期:16页:2365-2377
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Pharmacology & Pharmacy
研究领域[WOS]Pharmacology & Pharmacy
关键词[WOS]METALLOPROTEINASE GENE-EXPRESSION ; CONVERTING ENZYME-INHIBITORS ; MYOCYTE CELL-DEATH ; IV COLLAGENASE ; HEART-FAILURE ; GELATINASE-A ; TRANSCRIPTIONAL ACTIVATION ; MATRIX METALLOPROTEINASE-2 ; MYOCARDIAL-INFARCTION ; VENTRICULAR MYOCYTES
英文摘要

OBJECTIVE: Atrial fibrillation (AF) has been identified to contribute significantly to the morbidity and mortality of cardiovascular disease patients. The atrial structural remodeling is a hallmark of AF and the molecular mechanisms underlying this remain unclear. Hence the objective of the present study is to determine the role of angiotensin II (AngII)/Ang-II type 1 (AT1) receptor - STAT3 signaling pathway on - atrial structural remodeling.

MATERIALS AND METHODS: The method of this study involves incubation of atrial myocytes, with Ang-II, to increase the level of apoptosis expressions by Tunel assay and the expression of apoptosis related factors like caspase 3 and 8 release of cytochrome C from mitochondria to cytosol by western blot test after OGD pre-treatment.

RESULTS: Atrial myocytes were shown to simulate the ischemia, hypoxia and atrial fibrillation. When incubated with Ang-II, (inhibited by losartan) the improvement was observed in the expression of caspase-3 and caspase-8. Ang-II also significantly promoted the transfer of cytochrome C levels from the mitochondria to the cytoplasm and this transfer was observed to be inhibited by losartan and WP1066. Ang-II incubation showed improved transcriptions of collagens and MMP expressions in atrial fibroblasts. In cultured atrial myocytes and fibroblasts, Ang-II induced tyrosine and serine phosphorylation of STAT3 showing interaction with MMP1 and MMP2 and DNA promoter sequences in atrial fibroblasts. The complete sequence was observed to have an affinity to be inhibited by losartan and WP1066.

CONCLUSIONS: Ang-II/AT1 receptor/STAT3 is an important signaling pathway in the atrial structural remodeling, Ang-II enhances the apoptosis of atrial parenchyma and deposition of atrial ECM, which might contributes to atrial fibrillation.

语种英语
WOS记录号WOS:000352203200021
项目编号2011BHKZ005
资助机构Tianjin Binhai New Area of Medical Science and Technology Projects
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/52694
专题北京大学第一临床医学院
作者单位1.Fifth Cent Hosp Tianjin, Tianjin, Peoples R China
2.Beijing Univ, Hosp 1, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Zheng, L. -Y.,Zhang, M. -H.,Xue, J. -H.,et al. Effect of Angiotensin II on STAT3 mediated atrial structural remodeling[J]. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES,2014,18(16):2365-2377.
APA Zheng, L. -Y..,Zhang, M. -H..,Xue, J. -H..,Li, Y..,Nan, Y..,...&Du, X. -P..(2014).Effect of Angiotensin II on STAT3 mediated atrial structural remodeling.EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES,18(16),2365-2377.
MLA Zheng, L. -Y.,et al."Effect of Angiotensin II on STAT3 mediated atrial structural remodeling".EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 18.16(2014):2365-2377.
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