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• 基础研究 • 上一篇    下一篇

罗格列酮对大鼠急性心肌缺血再灌注损伤的保护作用

王春艳1,李 晶2,王春梅2,高 鹏2,高长斌1,陈 立2   

  1. 1.吉林大学第一医院干部病房,吉林 长春 130021;2.吉林大学基础医学院药理学教研室,吉林 长春 130021
  • 收稿日期:2008-08-13 修回日期:1900-01-01 出版日期:2009-01-28 发布日期:2009-01-28
  • 通讯作者: 高长斌;陈 立

Protective effect of rosiglitazone on myocardial ischemia-reperfusion injury in rats

WANG Chun-yan1,LI Jing2,WANG Chun-mei2,GAO Peng2,GAO Chang-bin1,CHEN Li2   

  1. 1.Department of Cadre Ward, First Hospital,Jilin University,Changchun 130021,China; 2.Department of Pharmacology,School of Basic Medical Sciences,Jilin University,Changchun 130021,China
  • Received:2008-08-13 Revised:1900-01-01 Online:2009-01-28 Published:2009-01-28
  • Contact: GAO Chang-bin;CHEN Li

摘要: 目的:观察罗格列酮(RSG)对大鼠急性心肌缺血再灌注(I-R)损伤心肌梗死面积、心律失常发生率和心肌病理学改变的影响。方法:结扎大鼠左冠状动脉前降支30 min、再灌注120 min建立大鼠心肌I-R损伤模型,将大鼠随机分为I-R损伤模型组、RSG高剂量(6 mg•kg-1)、低剂量(3 mg•kg-1)组和假手术组,灌胃给药1周后行I-R损伤手术,观察心肌梗死面积、心律失常发生次数和类型、心肌组织学改变和心肌细胞超微结构的变化。结果:与模型组比较,RSG高剂量组心肌梗死面积与左心室面积百分率(IS/LV%,29.3±4.9 vs 37.6±3.2)以及心肌梗死面积与危险区面积比值(IS/AAR%,76.1±9.6 vs 93.5±7.4)减少(P<0.05或P<0.01);RSG高量组心律失常评分(2.6±0.4)低于I-R损伤模型组(4.2±0.6)(P<0.05)。RSG组心肌病理组织学和心肌细胞超微结构损伤轻于I-R损伤模型组。结论:RSG可通过减少I-R损伤大鼠心肌梗死面积、减少恶性心律失常的发生及改善病理组织学损伤而起到对大鼠心肌I-R损伤的保护作用。

关键词: 大鼠, Wistar, 缺血再灌注

Abstract: Abstract:Objective To observe the effects of rosiglitazone(RSG) on myocardial infarct size (IS),incidence rate of arrhythmias and the pathohistological changes in rat model of acute myocardial ischemia-reperfusion(I-R) injury.Methods The rat myocardial I-R injury model was induced by ligating left anterior descending branch of coronary artery for 30 min and reperfusing for 120 min.Wistar rats were randomly divided into four groups: I-R group,RSG groups with the doses of 3 and 6 mg•kg-1,and sham-operation group.IS, times and types of arrhythmia, pathohistological changes of myocardium tissue and changes of myocardial cell ultrastructure were observed.Results Compared  with I-R group,RSG decreased the ratio of IS/LV%(29.3±4.9 vs 37.6±3.2,P<0.05) and the rate of IS/AAR%(76.1±9.6 vs 93.5±7.4,P<0.05),reduced the score of arrhythmias(2.6±0.4 vs 46.2±0.6,P<0.05),the injuries of pathohistology of myocardium and myocardial cell ultrastructure in RSG group were better that those in I-R group.Conclusion RSG has the protective effect on acute myocardial I-R injury in rats,probably by reducing myocardium ischemia area and incidence rate of arrhythmias and ameliorating morphology and ultrastructure of myocardium.

Key words: rats, Wistar, ischemia-reperfusion

中图分类号: 

  • R542.2