Gastrodin inhibits HG-induced inflammation and oxidative stress by activating the 5'AMP-activated protein kinase/nuclear factor erythroid 2-related factor 2 signaling pathway in MPC5 cells. (A) The secretion of inflammatory cytokines, TNF-α, IL-1β and IL-6 were analyzed by ELISA. (B) The expression levels of MCP-1, NLRP3, ASC and Caspase-1 were determined by western blotting and quantified. (C) MDA levels and the activities of LDH and SOD were quantified using their respective assay kits. Error bars represent the mean ± SEM from three independent experiments. **P<0.01 and ***P<0.001 vs. HG. #P<0.05, ##P<0.01 and ###P<0.001 vs. HG + 100 µM gastrodin. HG, high glucose; LDH, lactate dehydrogenase; SOD, superoxide dismutase; MDA, malondialdehyde; MCP-1, monocyte chemoattractant protein 1; ASC, apoptosis-associated speck-like protein; NLRP3, NOD-, LRR- and pyrin domain-containing protein 3.