J4 ›› 2010, Vol. 36 ›› Issue (4): 634-639.

• 基础研究 • 上一篇    下一篇

山楂叶总黄酮对大鼠心肌缺血再灌注损伤的保护作用

李红|关凤英|刘亚东|石卓|杨世杰   

  1. 吉林大学基础医学院药理学教研室|吉林 长春130021
  • 收稿日期:2010-01-27 出版日期:2010-07-28 发布日期:2010-07-28
  • 通讯作者: 石 卓(Tel: 0431-85619799,E-mail: shi_zhuo@126.com) E-mail:shi_zhuo@126.com
  • 作者简介:李 红(1958-)|女,吉林省长春市人|高级实验师|医学硕士|主要从事分子药理学研究。
  • 基金资助:

    吉林省科技厅科研基金资助课题(200705355)

Protective effects of Flavone mixture of crataegus leave onmyocardial ischemia reperfusion injury in rats

LI Hong,GUAN Feng-ying,LIU Ya-dong,SHI Zhuo,YANG Shi-jie   

  1. Department |of |Pharmacology,School of |Basic Medical Sciences,Jilin University,Changchun 130021,China
  • Received:2010-01-27 Online:2010-07-28 Published:2010-07-28

摘要:

目的:研究山楂叶总黄酮(FMCL)对心肌缺血再灌注损伤的保护作用,并初步探讨其机制。方法:56只Wistar大鼠随机分为生理盐水组、假手术组、再灌注模型组、阳性药血塞通(20 mg?kg-1) 组及FMCL高、中、低(30.0、15.0和7.5 mg/kg)剂量组,每组8只,结扎冠状动脉前降支30 min,松扎再灌注120 min 制备心肌缺血再灌注损伤模型,观察FMCL作用下大鼠心电图ST段的改变;大鼠TTC染色测量心肌梗死面积;HE染色观察大鼠心肌组织病理形态学的变化;检测大鼠血清CK、LDH、AST、SOD、MDA及NO含量的变化。结果:与模型组比较,FMCL 30.0、15.0 mg?kg-1组及阳性药血塞通组(20 mg/kg)在缺血10、30 min和再灌注10、30、60、120 min时ST段抬高明显降低 (P<0.01),FMCL 7.5  mg?kg-1组与模型组比较差异无显著性(P>0.05); FMCL 30.0、15.0、7.5  mg?kg-1组及阳性药血塞通20 mg/kg组心肌梗死面积明显缩小(P<0.05或 P<0.01);FMCL可改善心肌组织病理损害;与模型组比较, FMCL 30.0、15.0、7.5 mg?kg-1组及阳性药血塞通组大鼠血清中AST、CK和LDH含量明显降低(P<0.01或P<0.05);FMCL 30.0、15.0 mg?kg-1组及阳性药血塞通组大鼠血清中SOD活性及NO含量明显升高(P<0.01), MDA含量降低(P<0.01)。结论:FMCL对大鼠心肌缺血再灌注损伤具有保护作用,其作用机制可能与抗自由基作用有关。

关键词: 山楂叶总黄酮;心肌缺血;缺血再灌注;脂质过氧化;一氧化氮

Abstract:

Objective To investigate the protective effects of Flavone mixture of crataegus leave (FMCL) on the rat myocardial ischemia reperfusion models and their mechanisms.Methods Fifty-six Wistar rats were randomly divided into control group,sham group,ischemia reperfusion model group,Xue-Sai-Tong(20 mg/kg) group and FMCL (30.0,15.0,7.5  mg/kg) groups(n=8).The myocardial ischemia reperfusion model was induced by 30 min left anterior descending coronary occulusion and 120 min reperfusion in openchest anesthetized rats to study the effects of FMCL on elegated ST-T of electrocardiogram ( ECG),the size of myocardial infarction,the morphological changes of cardiocytes and the contents of SOD,MDA,CK,AST,LDH and NO in serum were detected. Results Compared with model group,elegated ST-T of  ECG in FMCL(30.0,15.0 mg/kg)and Xue-Sai-Tong groups were decreased(P<0.01),the sizes of myocardial infarction in FMCL(30.0,15.0,7.5 mg/kg) and Xue-Sai-Tong groups were shrinked(P<0.05 or P<0.01),FMCL could ameliorate the pathological lesion. Compared with model group,the contents of AST,CK,LDH and MDA in FMCL(30.0,15.0 mg/kg)and Xue-Sai-Tong groups were decreased(P<0.05 or P<0.01),and the contents of SOD and NO were increased(P<0.01).Conclusion FMCL  has the protective effects on myocardial ischemia reperfusion injury in rats,which may be related to inhibition of lipid oxidation.

Key words: Flavone mixture of crataegus leave;myocardial ischemia;ischemia reperfusion;lipid peroxidation;nitric oxide

中图分类号: 

  •