SOD1 and polycystic ovary syndrome: As in SOD and catalase analyses, treatment with KH (101.72 ± 1.39 U/mg prot), combined KH + clomiphene (116.66 ± 3.27 U/mg prot), and combined KH + metformin (107.76 ± 1.26 U/mg prot) significantly increased the GSH peroxidase activity (p < 0.05) as compared with the untreated PCOS rats (148.22 ± 5.88 U/mg prot).