Figure 7.

Cyclooxygenase-2 (COX-2) expression levels in HGFs exposed to DMEM culture medium (CTRL1), to SS diluted 1:40 and 1:80 (left histogram), and of HGFs pre-treated with H₂O₂ 100 µM then exposed to DMEM culture medium (CTRL2) and to SS diluted 1:40 and 1:80 (right histogram) for 6 h. The most representative of three separate experiments is shown. Actin is used as a loading control. The bar graph displays densitometric values expressed as mean ± standard deviation of COX-2 normalized on loading control. Left histogramvs. CTRL1 ### p < 0.0001, ## p < 0.001; right histogram vs. CTRL2 *** p < 0.0001.