Fig. 5

Before and after oxLDL treatment, the IFN-γ-mediated promotion of THP-M foaming was reversed by IDO1 inhibition. a, b IDO1 activity (Kyn/Trp) was detected by HPLC. c, d The results of Oil red O staining (×400). The designation of different treatments, such as oxLDL, IFN-γ, IFN-γ+oxLDL, oxLDL+IFN-γ, IFN-γ+Incyte+oxLDL, oxLDL+IFN-γ+Incyte, IFN-γ+1-MT+oxLDL and oxLDL+IFN-γ+1-MT, was described in the Materials and Methods. Data were based on at least three independent experiments. *p < 0.05