Abstract
Melatonin (Mel) has neuroprotective effects; however, its roles in hypoxic-ischemic brain damage (HIBD) and the underlying mechanisms remain unknown. We aimed to explore its roles and mechanisms in a HIBD rat model. We found that exogenous Mel treatment ameliorated HIBD-induced pathological changes, inhibited neuronal ferroptosis, and promoted hippocampal neuronal survival. Moreover, Mel improved the learning and memory abilities of the HIBD rats. Further, we found that glutathione peroxidase 4 (Gpx4) inhibition with RSL3, Akt inhibition with LY29400, and nuclear factor erythroid-2-related factor 2 (Nrf2) inhibition with ML385 abolished the Mel protective effects in HIBD. Our findings indicate that exogenous Mel treatment has a protective effect on HIBD via the Akt/Nrf2/Gpx4 pathway.
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