Research Article

Dihydrocaffeic Acid Prevents UVB-Induced Oxidative Stress Leading to the Inhibition of Apoptosis and MMP-1 Expression via p38 Signaling Pathway

Figure 2

Cell viability using DHCA (7–35 μM) and DMSO (0.6%) on L929 cells evaluated by the neutral red assay after 24 h of treatment (a). Protective effect of pretreatment with DHCA (7–35 μM), 1 mM NAC (as positive control), and DMSO (0.6%) against UVB-induced L929 cell death evaluated by neutral red assay after 24 h of UVB exposure (600 mJ/cm2) (b). Each column represents the mean ± SD (). : significantly different from nonirradiated and nontreated cells (NC); and : significantly different from irradiated and nontreated cells (UVB).
(a)
(b)