Objective To investigate the effect of polygalasaponin F(PGSF)on the activation of BV-2 microglial cells induced by lipopolysaccharide(LPS)and to explore its underlying mechanism.Methods Neuroinflammatory model was established by exposure of BV-2 cells to LPS(0.1 μg·mL~(-1)) for 24 h.The concentrations of pro-inflammatory cytokines of interleukin-1β(IL~(-1)β) and tumor necrosis factor-α(TNF-α) were detected by enzyme-linked immunosorbent assay(ELISA),and nitric oxide(NO) content was determined by Griess met...