Figure 2.

Anti-neuroinflammatory effects of Psoralea Fructus (PF) compounds. BV-2 cells were incubated with different concentrations of PF compounds for 1 h followed by treatment with 0.5 μg/mL lipopolysaccharide (LPS) for 24 h. The culture supernatant was aliquoted. (A) Nitric oxide (NO) levels were determined using Griess reaction; (B) Tumor necrosis factor (TNF)-α and (C) interleukin (IL)-6 levels were measured using ELISA. Curcumin was used as a positive control. Data are expressed as mean ± SEM.