Role of Neurosteroids in Ischemic Postconditioning-Induced Attenuation of Cerebral Ischemia-Evoked Neuronal Injury and Behavioral Deficits in Mice

The study explored the role of neurosteroids in mitigating neuronal injury and behavioral deficits in mice following cerebral ischemia through ischemic postconditioning. It involved 5 mice per group and demonstrated that ischemic postconditioning significantly reduced cerebral infarct size and improved motor performance and short-term memory. The administration of metyrapone, an 11ẞ-hydroxylase inhibitor, further enhanced these protective effects, suggesting that neurosteroids contributed to the neuroprotective mechanisms. Conversely, finasteride, a 5α-reductase inhibitor, reversed these benefits. The findings indicated that neurosteroids played a crucial role in the neuroprotective effects of ischemic postconditioning, although further research was necessary to fully elucidate their involvement.