Abstract
Bupivacaine is a common local anesthetic that causes neurotoxicity when used at clinical concentrations. Melatonin (MT), is a potent neuroprotective molecule. The study aimed to characterize the neuroprotective effects of MT on spinal neurotoxicity induced by bupivacaine in rats. It showed that bupivacaine, by intrathecal injection, induced spinal injury, and that the protein levels of Nod-like receptor protein 3 (NLRP3), cleaved caspase-1, and the N-terminal region of gasdermin D (GSDMD-N) were significantly increased. NLRP3 was expressed mainly in neurons and microglia. MT treatment ameliorated bupivacaine-induced spinal cord injury in rats by suppressing activation of neuronal NLRP3 inflammasomes.
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