Effect of oleanolic acid (OA) on catalase expression in chronic CsA nephropathy. (A) Immunoblotting for the target molecule catalase in chronic CsA nephropathy. (B) Quantitative analyses for catalase/β-actin. There were no significant differences in the expression of catalase among the experimental groups. VH = vehicle-treated group; VH + OA = vehicle plus oleanolic acid-treated group; CsA = cyclosporine-treated group; CsA + OA = cyclosporine plus oleanolic acid-treated group.