FOXO3 and ischemic stroke: Briefly, we suggest three possibilities: (1) GSH attenuates cerebral infarct volume after ischemic stroke, (2) GSH preserves the disruption of BBB after ischemic injury, and (3) GSH improves the survival of brain endothelial cells by promoting the PI3K/Akt pathway, inhibiting the translocation of FOXO3 into the nucleus, and boosting the expression of Bcl2.