Fig. (3) Effect of EA (50 μM) on β-catenin, HO-1, HO-2 and SIRT1 expressions in cultured DU145 cells. Results, expressed as arbitrary units (AU), represent the mean ± SD of 4 experiments performed in triplicate. Significance of 50 μM EA versus control; * p < 0.05. Representative Western blotting of β-catenin, HO-1, HO-2 and SIRT1 protein expression in cultured DU145 cells.