Figure 4. Oxidative stress measurements in different groups. (A) ROS levels in the cortex and hippocampus. (B) MDA level in the cortex and hippocampus. (C) CAT activities in the cortex and hippocampus. (D) SOD activities in the cortex and hippocampus. (E) GSH levels in the cortex and hippocampus. Data are shown as the mean ± SEM (n=7) *P<0.05, * *P<0.01 and * * *P<0.001 vs. the CON group; # P<0.05, ##P<0.01 and ###P<0.001 vs. the DM group.