Fig. 4

Comparison of malondialdehyde (MDA) concentration among the sham and treated groups (n = 10 rats per group). Values represent mean ± SEM of MDA (nanomoles per milligram protein of brain tissue). **, * Indicate significant difference in comparison with 6-OHDA group (P < 0.05). There is no significant difference between the sham and 6-OHDA+AO groups (P > 0.05). 6-OHDA 6-hydroxydopamine, 6-OHDA+AO 6-hydroxydopamine plus Althaea officinalis extract