Objective To observe the protective effect of Apelin-13 on the cerebral ischemia-reperfusion injury(CIRI),and to explore the possible mechanism in rat model.Methods Fifty male SD rats were randomly divided into fivegroups:sham group,CIRI model group and Apelin-13(0.1,1.0 and 10.0 μg/kg) treatment groups.The model of CIRI was es-tablished by filament.After 2 h ischemia,the focal middle cerebral artery was followed by 72 h reperfusion.Apelin-13 wasadministrated by intracerebroventricular injection 30 minutes ...