The effects of cudraflavanone D (1) on TNF-α (A), IL-1β (B), IL-12 (C), and IL-6 (D) mRNA expression in BV2 microglial cells stimulated with LPS. Cells were pre-treated for 3 h with the indicated concentrations of cudraflavanone D (1) and then stimulated for 12 h with LPS (1 μg/mL). The concentrations of TNF-α (A), IL-1β (B), IL-12 (C), and IL-6 (D) were determined as described in Materials and Methods. RNA quantification was performed as described in Materials and Methods and representative blots of three independent experiments are shown. The data represent the mean values of three experiments ± SD. * p < 0.05, as compared with the cells treated with LPS only.