Improvement of Contractile Function in Isolated Cardiomyocytes From Ischemia-Reperfusion Rats by Ginkgolide B Pretreatment

被引：43

作者：

Hao, Yunling ^{[1
]}

Sun, Yiwei ^{[1
]}

Xu, Chuanying ^{[1
]}

Jiang, Xinwei ^{[1
]}

Sun, Hong ^{[1
]}

Wu, Qin ^{[1
]}

Yan, Changdong ^{[1
]}

Gu, Shuling ^{[1
]}

机构：

[1] Xuzhou Med Coll, Dept Physiol & Pharmacol, Xuzhou 221002, Jiangsu, Peoples R China

来源：

JOURNAL OF CARDIOVASCULAR PHARMACOLOGY | 2009年 / 54卷 / 01期

关键词：

ginkgolide B; ischema-reperfusion; myocardial contraction; BILOBA EXTRACT EGB-761; INDUCED PLATELET-AGGREGATION; CARDIAC MYOCYTES; MYOCARDIAL-ISCHEMIA; INDUCED APOPTOSIS; OXIDATIVE STRESS; PAF ANTAGONISTS; CELL-SURVIVAL; IN-VITRO; ARRHYTHMIAS;

D O I：

10.1097/FJC.0b013e3181a91410

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Ginkgo biloba extract is all important natural product for treatment of cerebral and cardiovascular diseases, whereas ginkgolide B (GB) is a main component of it. Its effects oil ischemic heart and ventricular contractile function in Sprague-Dawley male rats are unclear yet. In file present study, WC investigated file function of isolated hearts subjected to ischemia-reperfusion (IR) with or without GB pretreatment by using Millar transducer instruments. We also tested file left ventricular cardiomyocyte shortening amplitude after IR with different concentrations of GB pretreatment for 0.1, 1.0, 2.0, 5.0, and 10.0 mu M. The infarct size was tested by triphenyltetrazolium chloride. The release of lactate dehydrogenase (LDH) in the coronary effluent was determined with LDH kit. The expressions of Bcl-2 and Bax were assessed by Western blotting. We found that GB improved the function of left ventricle from IR injury and decreased infarct size and the release of LDH. The cardiomyocyte shortening amplitude depended on different concentrations of GB, which increased significantly at 2.0 mu A GB (P < 0.01). The expression of protein Bcl-2 was upregulated by GB and the ratio of Bax to Bcl-2 was decreased by GB. Our results showed that GB can partly prevent IR injury in rat heart.

引用

页码：3 / 9

页数：7

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