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雌二醇对兔心肌缺血-再灌注损伤的保护作用 被引量:2

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摘要 目的探讨17b-雌二醇(E2)对兔心肌缺血-再灌注(I/R)损伤的保护作用。方法通过结扎冠状动脉左前降支建立兔在体心肌I/R损伤模型,将36只兔随机分为3组(每组12只),对照组:心肌缺血前静脉注入1ml乙醇;早期组:心肌缺血前注入10μg/kgE2;晚期组:再灌注前注入10μg/kgE2。化学发光法测定E2的浓度,检测血清超氧化物歧化酶(SOD)、丙二醛(MDA)、肌酸激酶同工酶(CK-MB)的变化,称重法测定心肌梗死范围,TUNEL法检测心肌细胞凋亡。结果与对照组比较,早期组和晚期组CK-MB、MDA含量明显降低(P<0.05),SOD活性明显升高(P<0.05),心肌梗死范围及凋亡指数显著降低(P<0.05),但早期组和晚期组之间比较差异无统计学意义。结论E2对减轻心肌I/R损伤的作用是在再灌注过程中,这种作用可能是通过抗氧化、抗凋亡和减少心肌细胞坏死途径实现的。
出处 《中国胸心血管外科临床杂志》 CAS 2007年第4期316-318,共3页 Chinese Journal of Clinical Thoracic and Cardiovascular Surgery
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同被引文献24

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