Figure 6: Inhibitory effects of cinnamophilin (CINN) on hydrogen peroxide production in PMA-treated neutrophils. (A) Cells were pretreated with CINN (1 to 100 μM) for 15 minutes, followed by staining with DHR-123. (B) Cells were cotreated with CINN and stimulated with PMA for 15 minutes, followed by staining with DHR-123. The hydrogen peroxide production of cell was determined by flow cytometric assay. Data are expressed by the mean ± standard deviation (S. D.), and n=6 per group. *P<0.05 compared with vehicletreated controls by using the Kruskal-Wallis/Mann-Whitney U tests.