SOD1 and cervical squamous intraepithelial neoplasia: In the present study, the kidney levels of SOD activity were significantly raised in both DRs and CIN + DRs when compared with HRs (1.35 ± 0.02 and 1.44 ± 0.02 versus 1.28 ± 0.01, p < 0.05, resp).