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西洋参叶20s-原人参三醇组皂苷对大鼠心肌缺血再灌注损伤的保护作用

李 智1,2,于晓风1,曲绍春1,徐华丽1,睢大员1   

  1. 1.吉林大学药学院药理学教研室,吉林 长春 130021;2.中国人民解放军总医院第二附属医院药剂科,北京 100091
  • 收稿日期:2007-10-10 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: 睢大员

Protective effects of panax quinquefolium 20s-protopanaxtriolsaponins on myocardial ischemia-reperfusion injury in rats

LI Zhi1,2,YU Xiao-feng1,QU Shao-chun1,XU Hua-li1,SUI Da-yuan1   

  1. 1. Department of Pharmacology,School of Pharmacy,Jilin University,Changchun 130021,China;2. Department of Medical Material,General Hospital of PLA,Beijing 100091, China
  • Received:2007-10-10 Revised:1900-01-01 Online:2009-01-28 Published:2009-01-28
  • Contact: SUI Da-yuan

摘要: 目的:观察西洋参叶20s-原人参三醇组皂苷(PQTS)对大鼠心肌缺血再灌注损伤的保护作用,为新药开发提供依据。方法:50只大鼠随机分为假手术组、再灌注模型组及PQTS 12.5、25.0、50.0 mg•kg-1组(每组10只),PQTS组动物腹腔注射PQTS,假手术组和再灌注模型组注射生理盐水,结扎冠状动脉前降支30 min,松扎再灌注120 min造成心肌缺血再灌注损伤模型,检测各组心肌梗死范围(MIS),血清天冬氨酸氨基转移酶(AST)、乳酸脱氢酶(LDH)、心肌型肌酸激酶同功酶(CK-MB)、超氧物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性、丙二醛(MDA)含量、血浆前列环素(PGI2)及血栓素A2(TXA2)水平。结果:与再灌注模型组比较,PQTS 25.0和50.0 mg•kg-1组MIS缩小(P<0.01),血清AST、LDH、CK-MB活性及MDA含量降低(P<0.01),SOD及GSH-Px活性升高(P<0.05),血浆TXA2水平下降(P<0.05),PGI2水平及PGI2/TXA2比值增高(P<0.05或P<0.01)。上述指标PQTS 12.5 mg•kg-1组与对照组及再灌注模型组比较差异无显著性。结论:PQTS对大鼠心肌缺血再灌注损伤具有明显保护作用,可能与其增强抗氧化酶活性、减少自由基对心肌的氧化损伤、纠正血管活性物质平衡失调等机制有关。

关键词: 心肌缺血再灌注损伤, 心肌酶, 自由基, 血管活性物质

Abstract: Abstract:Objective To observe the protective effects of panax quinquefolium 20s-protopanaxtriolsaponins (PQTS) on myocardial ischemia-reperfusion injury in rats in order to provide basis for new drug development.Methods Fifty rats were divided randomly into sham group,ischemia-reperfusion model group and PQTS 12.5,25.0 and 50.0 mg•kg-1 group(n=10).All animals in PQTS groups were administered with PQTS one time everyday with intraperitoneal injection(i.p) for 3 d,the rats in sham and model groups were given saline. The myocardial ischemia-reperfusion model was induced by 30 min left anterior descending coronary occulusion and 120 min reperfusion in openchest anesthetized rats. The changes of aspartate aminotransferase (AST),lactate dehydrogenase(LDH),MB isoenzyme of creatine kinase(CK-MB),superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) content in serum,and the prostacycline(PGI2) and thromboxane A2 (TXA2) levels in plasma were determined.Results Compared with model group,in rats treated with PQTS (12.5,25.0 and 50.0 mg•kg-1 i.p for 3 d),the MIS was significantly reduced(P<0.01),the AST,LDH and CK-MB activities in serum,the MDA content,and the TXA2 level in plasma were declined(P<0.05 or P<0.01),while the PGI2 level in plasma and PGI2/TXA2 ratio were increased signficatly(P<0.05).In addition,the SOD and GSH-Px activities in serum were increased markedly(P<0.05 or P<0.01).Conclusion PQTS  has protective effects on myocardial ischemia-reperfusion injury through enhanceing activity of antioxidase,reducing oxidative damage of free radicals on myocardium and correcting disequilibrium of vasoactive substance.

Key words: myocardial ischemia-reperfusion injury, myocardial enzyme, free radicals, vasoactive substance

中图分类号: 

  • R285.5