Figure 5.
Effects of nano-ZrO2 on glutathione peroxidase activity (GPx), in A: N2a cell line, B: PCl2 cell line. Cells were treated with different concentrations of zirconia for 24 hours. The GPx concentration is normalized to the protein concentration and the activity of enzyme was expressed as unit/mg protein. One way ANOVA analysis show significant difference between the data which were investigated *p<0.05 **p<0.01 and ***p<0.001, as compared with control group