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山葡萄多酚对大鼠心肌线粒体氧化损伤的保护作用

焦淑萍1,倪海镜2,薛丽娟2   

  1. 1.北华大学医学院生物化学教研室,吉林 吉林132013;2.吉林大学中日联谊医院药剂科,吉林 长春130033
  • 收稿日期:2007-04-19 修回日期:1900-01-01 出版日期:2008-01-28 发布日期:2008-01-28
  • 通讯作者: 倪海镜

Effects of polyphenols of vitis amurensis Rupr on rat heart mitochondria injury induced by vitamin C and FeSO4

JIAO Shu-ping1,NI Hai-jing2,XUE Li-juan2   

  1. 1.Department of Biochemistry,Medical College of Beihua University,Jilin 132013,China;2.Department of Medicament,China-Japan Union Hospital, Jilin University,Changchun 130033,China
  • Received:2007-04-19 Revised:1900-01-01 Online:2008-01-28 Published:2008-01-28
  • Contact: NI Hai-jing

摘要: 目的:在大鼠心肌线粒体(Mt)自由基损伤的体外实验中观察山葡萄多酚(PVAR)对心肌线粒体氧化损伤的保护作用,为治疗心肌缺血再灌注损伤提供实验依据。方法: 实验分5组,正常线粒体组、诱导损伤线粒体组和预先加25、50、100 mg•L-1PVAR再诱导损伤线粒体组;利用Fe2+/维生素C(VitC)系统产生氧自由基,体外对Wistar大鼠心肌Mt诱导损伤,观察各组Mt心磷脂和MDA含量、膜流动性、ATPase活性和肿胀度的变化。结果:与损伤组比较,三种剂量PVAR组心磷脂含量明显增高(P<0.05),MDA明显减少(P<0.01),膜流动性显著增大(P<0.01),ATPase活性增高(P<0.05),100 mg•L-1PVAR组线粒体肿胀度与正常组比较差异无显著性。结论:氧自由基引起Mt损伤;PVAR对氧自由基引起的大鼠心肌Mt损伤具有保护作用,保护机制可能是直接减少氧自由基的生成。

关键词: 多酚, 线粒体, 膜流动性

Abstract: Abstract:Objective To study the protective effects of the polyphenols of vitis amurensis Rupr(PVAR) on rat heart mitochondria injury induced by oxygen radicals.Methods Experiment was designed into 5 groups:normal group,injury group and 25,50,100 mg•L-1PVAR+injury group.In experiment of rat heart mitochondria injury in vitro,vitamin C and FeSO4 played as an injury agent,PVAR played as a protectiveagent.The cardiolipin and MDA level of the mitochondria were determined.The membrane fluidity,ATPase activity and swelling of the mitochondria were examined.Results Compared with injury group,the cardiolipin was increased(P<0.05),the MDA was decreased(P<0.05),the membrane fluidity and the ATPase activitiy were increased(P<0.01) in 25,50,100 mg•L-1 PVAR groups.There was no significant difference of swelling of injured mitochondria between PVAR( 100 mg•L-1) group and control group.Conclusion Oxygen radicals can result in severe mitochondria injuried.The PVAR can protect the injuried rat heart mitochondria by antagonizing the free radicals.

Key words: polyphenols, mitochondria, membrane fluidity

中图分类号: 

  • R965.1