Fig. 4

Effects of oleuropein on MDA concentration in brain of rats. Oleuropein at the dosages of 10, 15, and 20 mg/kg significantly decreased MDA concentration. Data are the mean ± SEM (n = 7). *p < 0.05 and **p < 0.01 indicate significant difference versus colchicine group, ^### p < 0.001 indicates significant difference versus control group