Fig. 7From: Excessive nerve growth factor impairs bidirectional communication between the oocyte and cumulus cells resulting in reduced oocyte competenceWorking model. â‘ Excessive NGF in the follicular fluid of PCOS patients. â‘¡ Stimulated-CCs secreted inhibitory factor(s) (undefined yet) and down-regulated the production of ODPFs in oocytes. â‘¢ Down-regulation of ODPFs could reduce glycolysis in CCs. â‘£ Reduction of glycolysis in CCs impaired oocyte meiotic maturation at the antral follicle stageBack to article page