PMID- 31164866 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200225 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 10 DP - 2019 TI - Central Mechanism Controlling Pubertal Onset in Mammals: A Triggering Role of Kisspeptin. PG - 312 LID - 10.3389/fendo.2019.00312 [doi] LID - 312 AB - Pubertal onset is thought to be timed by an increase in pulsatile gonadotropin-releasing hormone (GnRH)/gonadotropin secretion in mammals. The underlying mechanism of pubertal onset in mammals is still an open question. Evidence accumulated in the last 15 years suggests that kisspeptin/neurokinin B/dynorphin A (KNDy) neurons in the hypothalamic arcuate nucleus play a key role in pubertal onset by triggering pulsatile GnRH/gonadotropin secretin in mammals. Specifically, KNDy neurons are now considered a part of GnRH pulse generator, in which neurokinin B facilitates and dynorphin A inhibits, the synchronized discharge of KNDy neurons in autocrine and/or paracrine manners. Kisspeptin serves as a potent secretagogue of GnRH secretion and thus its release is fundamental to pubertal increase in GnRH/gonadotropin secretion in mammals. Proposed mechanisms inhibiting Kiss1 (kisspeptin gene) expression during childhood to juvenile varies from species to species: we envisage that negative feedback action of estrogen plays a key role in the inhibition of Kiss1 expression in KNDy neurons in rodents and sheep, whereas estrogen-independent inhibition of kisspeptin secretion by gamma-amino butyric acid or neuropeptide Y are suggested to be responsible for the pre-pubertal suppression of GnRH/gonadotropin secretion in primates. Taken together, the timing of pubertal onset is postulated to be controlled by upstream regulators for kisspeptin biosynthesis and secretion in mammals. FAU - Uenoyama, Yoshihisa AU - Uenoyama Y AD - Laboratory of Animal Reproduction, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan. FAU - Inoue, Naoko AU - Inoue N AD - Laboratory of Animal Reproduction, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan. FAU - Nakamura, Sho AU - Nakamura S AD - Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Japan. FAU - Tsukamura, Hiroko AU - Tsukamura H AD - Laboratory of Animal Reproduction, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan. LA - eng PT - Journal Article PT - Review DEP - 20190521 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 PMC - PMC6536648 OTO - NOTNLM OT - GnRH pulse generator OT - KNDy OT - dynorphin A OT - gonadotropin-releasing hormone (GnRH) OT - kisspeptin OT - neurokinin B OT - puberty EDAT- 2019/06/06 06:00 MHDA- 2019/06/06 06:01 PMCR- 2019/01/01 CRDT- 2019/06/06 06:00 PHST- 2018/12/17 00:00 [received] PHST- 2019/04/30 00:00 [accepted] PHST- 2019/06/06 06:00 [entrez] PHST- 2019/06/06 06:00 [pubmed] PHST- 2019/06/06 06:01 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2019.00312 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2019 May 21;10:312. doi: 10.3389/fendo.2019.00312. eCollection 2019.