Fig. 9

Secretion of cytokines in THP-1 cells under UVB + 5 m irradiation for varying durations for day 3 versus day 5 from first passages (G1) to second/subsequent passages (G2). A IL-10 concentration increased significantly from 3 to 5 days of UVB + 5 m irradiation in G2 compared to the UVB-negative control group (A1, A2). B Conversely, IL-12 concentration decreased under the same conditions, with reduced levels observed at both time points and even in G2 (B1, B2). C Similarly, IFN-γ Receptor concentration was also down-regulated in THP-1 cells exposed to UVB + 5 m irradiation, with comparable reductions seen after 3 and 5 days in both G1& G2 passages (C1, C2). Data are representative of three independent experiments. The statistical analysis shows as p-values p < 0.05 (*) or p < 0.005 (**) are significant, while p > 0.05 (ns) as non-significant.