I/R	ischemia/reperfusion
nNOS	neuronal nitric oxide synthase
IPostC	ischemic postconditioning
H/R	hypoxia/reoxygenation
HPostC	hypoxic postconditioning
AMPK	adenosine monophosphate-activated protein kinase
mTOR	mammalian target rapamycin
ROS	reactive oxygen species
IPre	ischemic preconditioning
SR	sarcoplasmic reticulum
NO	nitric oxide
HE	hematoxylin and eosin Staining