Effect of oleanolic acid (OA) on Bax and Bcl-2 expressions in chronic CsA nephropathy. (A) Representative Western blot analysis of Bax and Bcl-2 levels. (B) Quantitative analyses of the results of the Bax/Bcl-2 ratio. The Bax/Bcl-2 ratio was significantly reduced in the CsA + OA group compared with the CsA group. *p <0.05 vs. other 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.