PMID- 23872331 OWN - NLM STAT- MEDLINE DCOM- 20140303 LR - 20211021 IS - 1095-6808 (Electronic) IS - 0091-3022 (Print) IS - 0091-3022 (Linking) VI - 34 IP - 3 DP - 2013 Aug TI - Modulation of body temperature and LH secretion by hypothalamic KNDy (kisspeptin, neurokinin B and dynorphin) neurons: a novel hypothesis on the mechanism of hot flushes. PG - 211-27 LID - S0091-3022(13)00037-X [pii] LID - 10.1016/j.yfrne.2013.07.003 [doi] AB - Despite affecting millions of individuals, the etiology of hot flushes remains unknown. Here we review the physiology of hot flushes, CNS pathways regulating heat-dissipation effectors, and effects of estrogen on thermoregulation in animal models. Based on the marked changes in hypothalamic kisspeptin, neurokinin B and dynorphin (KNDy) neurons in postmenopausal women, we hypothesize that KNDy neurons play a role in the mechanism of flushes. In the rat, KNDy neurons project to preoptic thermoregulatory areas that express the neurokinin 3 receptor (NK3R), the primary receptor for NKB. Furthermore, activation of NK(3)R in the median preoptic nucleus, part of the heat-defense pathway, reduces body temperature. Finally, ablation of KNDy neurons reduces cutaneous vasodilatation and partially blocks the effects of estrogen on thermoregulation. These data suggest that arcuate KNDy neurons relay estrogen signals to preoptic structures regulating heat-dissipation effectors, supporting the hypothesis that KNDy neurons participate in the generation of flushes. CI - Published by Elsevier Inc. FAU - Rance, Naomi E AU - Rance NE AD - Department of Pathology and the Evelyn F. McKnight Brain Research Institute, University of Arizona College of Medicine, Tucson, AZ 85724, USA. nrance@email.arizona.edu FAU - Dacks, Penny A AU - Dacks PA FAU - Mittelman-Smith, Melinda A AU - Mittelman-Smith MA FAU - Romanovsky, Andrej A AU - Romanovsky AA FAU - Krajewski-Hall, Sally J AU - Krajewski-Hall SJ LA - eng GR - R01 AG032315/AG/NIA NIH HHS/United States GR - R01 NS041233/NS/NINDS NIH HHS/United States GR - R01 NS41233/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20130717 PL - United States TA - Front Neuroendocrinol JT - Frontiers in neuroendocrinology JID - 7513292 RN - 0 (Kisspeptins) RN - 0 (Receptors, Neurokinin-3) RN - 4TI98Z838E (Estradiol) RN - 74913-18-1 (Dynorphins) RN - 86933-75-7 (Neurokinin B) RN - 9002-67-9 (Luteinizing Hormone) SB - IM MH - Animals MH - Body Temperature Regulation/drug effects/*physiology MH - Dynorphins/*physiology MH - Estradiol/pharmacology MH - Estrous Cycle/drug effects MH - Female MH - Hot Flashes/*physiopathology MH - Humans MH - Hypothalamus/*metabolism MH - Kisspeptins/*physiology MH - Luteinizing Hormone/metabolism MH - Models, Biological MH - Neurokinin B/*physiology MH - Neurons/physiology MH - Ovariectomy MH - Postmenopause/physiology MH - Preoptic Area/metabolism MH - Rats MH - Receptors, Neurokinin-3/metabolism MH - Signal Transduction MH - Skin/blood supply MH - Tail/blood supply MH - Vasodilation PMC - PMC3833827 MID - NIHMS507337 OTO - NOTNLM OT - Estrogen OT - GnRH OT - LH OT - Menopause OT - Reproduction OT - Thermoregulation EDAT- 2013/07/23 06:00 MHDA- 2014/03/04 06:00 PMCR- 2014/08/01 CRDT- 2013/07/23 06:00 PHST- 2013/05/01 00:00 [received] PHST- 2013/07/09 00:00 [revised] PHST- 2013/07/12 00:00 [accepted] PHST- 2013/07/23 06:00 [entrez] PHST- 2013/07/23 06:00 [pubmed] PHST- 2014/03/04 06:00 [medline] PHST- 2014/08/01 00:00 [pmc-release] AID - S0091-3022(13)00037-X [pii] AID - 10.1016/j.yfrne.2013.07.003 [doi] PST - ppublish SO - Front Neuroendocrinol. 2013 Aug;34(3):211-27. doi: 10.1016/j.yfrne.2013.07.003. Epub 2013 Jul 17.