Downregulation of miR-210 Promoted Apoptosis of Hippocampal Neurons by Negatively Regulating the TLR4/NF-кB1 Signaling Pathway in a Rat Model of Status Epilepticus

PURPOSE: Status epilepticus (SE) is a life-threatening condition causing brain damage, hippocampal necrosis and apoptosis. This study aimed to determine whether microRNA-210 regulates seizure and apoptosis by targeting the TLR4 /NF-κB1 associated signaling pathway. METHODS: In a pilocarpine-induced epileptic rat model, the expressions of microRNA-210 (miR-210), TLR4, NF-κB1 and caspase-3 were assessed by a quantitative polymerase chain reaction and Western blotting. Tunel detects hippocampal neuron apoptosis. RESULTS: We found that miR-210, TLR4, NF-κB1 and caspase-3 were upregulated in the hippocampus of the rat model compared with that of control. The knockdown of miR-210 significantly restored the expression levels of TLR4, NF-κB1 and caspase-3 and increased hippocampal apoptosis. CONCLUSION: These findings showed that the downregulation of miR-210 promoted apoptosis of hippocampal neurons by negatively regulating the TLR4/NF-кB1 signaling pathway.