Detection of the absorbance of MDA, catalase
,
and GSH in CECs at 6 hours and 24 hours. The MDA content, catalase activity, and GSH activity were calculated according to the instructions of the kits. There were statistically significant differences in three indexes between the MNU group and the control group (MDA 6 hours: P < 0.0001; MDA 24 hours: P < 0.0001; catalase 6 hours: P < 0.0001; catalase 24 hours: P < 0.0001; GSH 6 hours: P < 0.05; and GSH 24 hours: P < 0.001). Compared with the MNU group, HRS decreased the MDA content, and increased the catalase activity and GSH activity, with statistical significance (MDA 6 hours: P < 0.05; MDA 24 hours: P < 0.0001; catalase 6 hours: P < 0.0001; catalase 24 hours: P < 0.001; GSH 6 hours: P < 0.05; and GSH 24 hours: P < 0.01; n = 3).