Figure 2. Chafuroside B decreased the UVB-induced production of TNF-α, PGE₂, and IL-10 in human keratinocytes.

NHEK were irradiated with UVB (20 mJ/cm²), and then treated with chafuroside B (0.3 and 1 µM). After 48 h, supernatants were collected and the levels of TNF-α, PGE₂, and IL-10 were evaluated by ELISA. (A) TNF-α. (B) PGE₂. (C) IL-10. Cha B  =  Chafuroside B. All data are expressed as the mean ± sd (n = 4). *P<0.05, **P<0.01 and ***P<0.001 compared with UVB (+).