OXT and polycystic ovary syndrome: PCOS is regarded as a chronic disease that closely associated with chronic inflammation and oxidative stress.4 Investigation of altered miRNAs expressions might reveal new targets for alleviating PCOS.8 MiR-873-5p has been reported to be an endocrine related miRNA that can be regulated by exogenous oxytocin in human myometrium.18 In the present study, we found that miR-873-5p levels were significantly up-regulated in follicular fluid from patients with PCOS.