Figure 4.

Effects of quercetin on Prevotella intermedia lipopolysaccharide (LPS)-induced inhibitory κB (IκB)-α degradation in RAW264.7 cells. Cells were incubated with different doses of quercetin (0, 0.1, 1, 10, 20, and 30 µM) in the absence or presence of P. intermedia LPS (10 µg/mL). After 30 minutes of incubation, IκB-α degradation was determined by immunoblot analysis of cell lysates using an antibody against IκB-α. A representative immunoblot from two separate experiments with similar results is shown.