【摘要】 目的 探讨微量元素硒和银杏叶对大鼠心肌缺血/再灌注损伤(IRI)的保护作用。 方法 建立大鼠心肌缺血/再灌注模型，用硒和银杏叶溶液在模型建立前分别做预处理，观察尾动脉压、心律失常的变化，测定血液中LDH、SOD、GSH-PX和MDA的改变。 结果 硒和银杏叶的预处理组，能降低血液中LDH和MDA含量，能提高SOD和GSH-PX活性，能升高血压和抗心律失常。 结论 硒和银杏叶对大鼠心肌IRI具有一定的保护作用。

    关键词 缺血再灌注损伤 超氧化物歧化酶 过氧化物酶 细胞保护 微量元素

    【Abstract】 Objective To investigate the protective effect of trace element selenium(Se)and Ginkgo Biloba leaves on myocardial ischemia reperfusion injury(IRI)in rats.Methods The model of myocardial ischemial reperfu-sion was established.The solution containing Se or Ginkgo Biloba was given before the model was Measured.The arte-rial blood pressure was measured by standard tail cuff method.The arrhythmia was observed during IRI.The levels of LDH ......