PLOD1 and polycystic ovary syndrome: Treatment with KH alone (17.45 ± 0.19 mIU/mL), combined KH + clomiphene (18.48 ± 0.27 mIU/mL), and combined KH + metformin (18.75 ± 0.43 mIU/mL) significantly reduced the levels of LH compared with untreated PCOS rats (p < 0.05).