Cited by 254Hypothalamic control of reproductive hormonesNeuropeptides and Animal PhysiologyNeuroendocrine regulation and behavior

Regulation of NKB pathways and their roles in the control of Kiss1 neurons in the arcuate nucleus of the male mouse

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Navarro, V. M., Gottsch, M. L., Wu, M., García-Galiano, D., Hobbs, S. J., Bosch, M. A., Pinilla, L., Clifton, D. K. +7 more·2011·Endocrinology

Abstract

Kisspeptin (Kiss1) and neurokinin B (NKB) (encoded by the Kiss1 and Tac2 genes, respectively) are indispensable for reproduction. In the female of many species, Kiss1 neurons in the arcuate nucleus (ARC) coexpress dynorphin A and NKB. Such cells have been termed Kiss1/NKB/Dynorphin (KNDy) neurons, which are thought to mediate the negative feedback regulation of GnRH/LH secretion by 17β-estradiol. However, we have less knowledge about the molecular physiology and regulation of Kiss1/Kiss1-expressing neurons in the ARC of the male. Our work focused on the adult male mouse, where we sought evidence for coexpression of these neuropeptides in cells in the ARC, assessed the role of Kiss1 neurons in negative feedback regulation of GnRH/LH secretion by testosterone (T), and investigated the action of NKB on KNDy and GnRH neurons. Results showed that 1) the mRNA encoding Kiss1, NKB, and dynorphin are coexpressed in neurons located in the ARC; 2) Kiss1 and dynorphin A mRNA are regulated by T through estrogen and androgen receptor-dependent pathways; 3) senktide, an agonist for the NKB receptor (neurokinin 3 receptor, encoded by Tacr3), stimulates gonadotropin secretion; 4) KNDy neurons express Tacr3, whereas GnRH neurons do not; and 5) senktide activates KNDy neurons but has no discernable effect on GnRH neurons. These observations corroborate the putative role for KNDy neurons in mediating the negative feedback effects of T on GnRH/LH secretion and provide evidence that NKB released from KNDy neurons is part of an auto-feedback loop that generates the pulsatile secretion of Kiss1 and GnRH in the male.

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Crossref · 10.1210/en.2011-1143

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Authors
Navarro, V. M., Gottsch, M. L., Wu, M., García-Galiano, D., Hobbs, S. J., Bosch, M. A., Pinilla, L., Clifton, D. K., Dearth, A., Ronnekleiv, O. K., Braun, R. E., Palmiter, R. D., Tena-Sempere, M., Alreja, M., & Steiner, R. A.
Affiliations
  • University of Washington (US)
  • Yale University (US)
  • Instituto Maimónides de Investigación Biomédica de Córdoba (ES)
  • Oregon Health & Science University (US)
  • Jackson Laboratory (US)
  • Department of Physiology and Pharmacology (M.A.B., O.K.R.), Oregon Health and Science University, Portland, Oregon 97239
  • Department of Cell Biology, Physiology, and Immunology (D.G.-G., L.P., M.T.-S.), Córdoba 14004, Spain
Corresponding author
Navarro, V. M.
Venue
Endocrinology
Published
2011-09-13
Volume
152
Issue
11
Pages
4265-4275
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2035954641
Cited by
254
References
41
Citations by year
2026: 4 · 2025: 10 · 2024: 11 · 2023: 6 · 2022: 7 · 2021: 18 · 2020: 12 · 2019: 17 · 2018: 19 · 2017: 16 · 2016: 24 · 2015: 15 · 2014: 28 · 2013: 33 · 2012: 28
FWCI
32.99
Type
journal article
Language
en
Open access
Locations
  • Endocrinology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
Funders
  • National Institutes of Health (5u54hd012629-31)
  • National Institute of Mental Health (MH 61465, R01MH061465)
  • National Institute on Drug Abuse (K05DA020570, R01DA016898, KO5-DA020570)
  • National Institute of Neurological Disorders and Stroke (R01NS043330)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD049651, U54-HD-12629, U54HD-012629)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
kisspeptin, neurokinin B, dynorphin A, KNDy neurons, arcuate nucleus, GnRH neurons, testosterone, negative feedback regulation, neurokinin-3 receptor, senktide, pulsatile gonadotropin secretion, male reproduction
MeSH terms
Animals, Arcuate Nucleus of Hypothalamus, Dynorphins, Gonadotropin-Releasing Hormone, Male, Neurons, Receptors, Estrogen, Receptors, Progesterone, Neurokinin B, Signal Transduction, Feedback, Physiological, Mice, Kisspeptins

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