Objective To observe the protective effect of ischemic preadaptation on myocardium injury of ischemia reperfusion by adopting the animal model of ischemia reperfusion on myocardium injury rabbits.

目的采用家兔心肌缺血再灌注损伤动物模型，观察缺血预适应对心肌缺血再灌注损伤的心肌保护作用。

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Objective: to explore research the protective effect of ischemia preconditioning to rabbits 'myocardium injury of ischemia reperfusion, and discuss its mechanism.

目的：从细胞保护角度出发，研究缺血预适应对家兔心肌缺血再灌注损伤的保护作用，并探讨其机制。

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AIM: To study whether magnesium chloride plays a protective role in myocardium of rats with ischemia reperfusion injury, and investigate the cardioprotective action mechanism of magnesium chloride.

目的：研究氯化镁对大鼠缺血再灌注损伤心肌是否具有保护性作用，同时探讨氯化镁的心肌保护作用机制。

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