Fig. 4

Effect of AP-1-L on inflammatory and apoptotic factors in HaCaT cells: a–c effects of AP-1-L on TNF-α, IL-8 and IL-1β and mRNA relative expression levels. d–g Effects of AP-1-L on Caspase-3, Caspase-9, Bax, Bcl-2. Significant difference analysis: comparison between each group and model group. (**P < 0.01, ***P < 0.001, difference analysis between sample group and UVA model group; ^##P < 0.01, ^###P < 0.001, difference analysis between blank control group and UVA model group.)