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. 2010 Oct 28;5(10):e13713. doi: 10.1371/journal.pone.0013713

Figure 6. Effect of stilbenoids 1–3 on COX-2 expression in irradiated HaCaT cells.

Figure 6

The effect of stilbenoids 1–3 was evaluated on COX-2 expression on HaCaT cells after UVB (60 mJ/cm2) irradiations. Untreated irradiated (UVB+) and non irradiated (UVB-) HaCaT were respectively used as positive and negative controls. In bar graph, the relative intensity of COX-2 was expressed as a ratio of COX-2/β-Actin and compared to the positive control UVB+. Statistical significance (*) was set at p<0.05 compared to the positive control. The three stilbenoids inhibited UVB-induced COX-2 expression at 23 µM, but did not inhibit COX-2 expression at 2.87 µM. Experiment was performed in triplicate with similar results.