MTOR and ischemic stroke: Schisandrol A utilizes an interesting mechanism to protect against ischemia/reperfusion-induced nerve damage by inactivating autophagy that occurs through the 5′-adenosine monophosphate-activated protein kinase-mammalian target of rapamycin (AMPK-mTOR) pathway, and thus can be used as a neuroprotective agent against ischemic stroke [45].