RESUMO
Objective:To investigate the protective effect of ferulic acid on PC12 cells injured by H2O2 and the molecular mechanisms. Method:The oxidative stress model was established by treating PC12 cells with H2O2, and then different dosages of ferulic acid (1, 10, 100 μmol·L-1) were used for intervention. Methyl thiazolyl tetrazolium (MTT) assay was used to evaluate the cell viability,lactate dehydrogenase (LDH) and malondialdelyde (MDA) in cell supernatant, and superoxidedismutase (SOD) in cells was tested by biochemical method respectively. Insulin-like growth factors-1 (IGF-1) mRNA and protein expressions were detected by Real-time fluorescence quantitative polymerase chain reaction(Real-time PCR) and Western blot. Result:The 24 h intervention with different dosages of ferulic acid (1, 10, 100 μmol·L-1) could significantly improve the oxidative damage of PC12 cells induced by H2O2, compared with the model group, ferulic acid at 1,10,100 μmol·L-1 significantly increased PC12 cells viability,significantly decreased LDH and MDA content in cell supernatant (PPPPPConclusion:Ferulic acid exerts a protective effect on H2O2-inducing PC12 cells injury,which might be related to insulin signaling pathways.