Figure 3.

DHCA reduces UVB-induced ROS. L929 cells were treated with 35 μM DHCA or 1 mM NAC for 1 h, irradiated with UVB (600 mJ/cm²), and immediately after irradiation, intracellular ROS (a) and extracellular H₂O₂ (b) production were evaluated by H₂DCFDA and Amplex Red kit assay, respectively. Each column represents the mean ± SD (n = 3). ^###p < 0.001: significantly different from nonirradiated and nontreated cells (NC); ^∗p < 0.05 and ^∗∗∗p < 0.001: significantly different from irradiated and nontreated cells (UVB).