ABSTRACT
Kisspoptin signaling plays an essential role in the onset of puberty and reproductive development.Recently studies implicate that steroid-responsive NKB,kisspeptin,NK3 R,and estrogen receptor α (ERα) coexpress in arcuate nucleus of hypothalamus of variety of mammalian species and regulate the secretion of gonadotrophic hormone.The function of neurons in the hypothalamus is to regulate the estrogen negative feedback on gonadotropin-releasing hormone (GnRH) secretion.Loss of function of neurokinin B (NKB) or its receptor,the neurokinin-3 receptor produces idiopathic hypogonadotropic hypogonadism.These studies demonstrate NKB and neurokinin-3 receptor as the essential elements of the human reproductive axis.
ABSTRACT
Activation of gonadotrophic hormone neuronstion and downstream reproductive hormones (luteinizing hormone and follicle stimulating hormone) secretion is the key event representing the onset of puberty.Hypothalamic pituitary gonad axis varies among gender,season and the stage of development.A number of hormones are involved in the control of hypothalamic pituitary gonad axis.Kisspeptins are potent secretagogues for gonadotrophic hormone,and the KISS1 gene is a target for regulation by gonadal steroids,metabolic factors,photoperiod,and season.This review focuses on Kisspeptin in the regulation of sexual development.