METHODS: 40 SD rats were randomized into 5 groups: control group, ischemia reperfusion group (IR group) and 3 ischemic postconditioning groups (IPO1, IPO2, IPO3 groups).

• 方法:将40只SD大鼠随机分为对照组、缺血再灌注组(IR组)和3个缺血后处理组(IPO1；IPO2；IPO3组)；分别制作动物模型.