Cited by 404Hypothalamic control of reproductive hormonesNeuropeptides and Animal PhysiologyRegulation of Appetite and Obesity

KiSS-1 messenger ribonucleic acid expression in the hypothalamus of the ewe is regulated by sex steroids and season

Smith, Jeremy T., Clay, Colin M., Caraty, Alain, Clarke, Iain J.·2007·Endocrinology

Abstract

The KiSS-1 gene encodes a family of peptides called kisspeptins, which are endogenous ligands for the G protein-coupled receptor GPR54. Kisspeptin function appears to be critical for GnRH secretion and the initiation of puberty. To test the hypothesis that steroid hormones regulate KiSS-1 mRNA expression in the ewe, we examined the brains of ovary-intact (luteal phase) and ovariectomized (OVX) ewes, as well as OVX ewes that received estradiol (E) or progesterone (P) replacement. KiSS-1 mRNA-expressing cells were predominantly located in the arcuate nucleus (ARC). Here, expression was increased after OVX but returned to the level of gonad-intact animals with E treatment. Treatment with P partially restored KiSS-1 expression toward gonad-intact levels. Double-label immunohistochemistry revealed that approximately 86% of kisspeptin-immunoreactive cells in the ARC are also P-receptor positive. Finally, we tested the hypothesis that KiSS-1 mRNA is lower during anestrus, due to a non-steroid-dependent seasonal effect. In OVX ewes, expression in the ARC was lower at the time of year corresponding to anestrus. We conclude that KiSS-1 expression in the ARC of the ewe brain is negatively regulated by chronic levels of E and P, suggesting that both steroids may exert negative feedback control on GnRH secretion through altered kisspeptin signaling. Furthermore, a seasonal alteration in KiSS-1 expression in the ARC of OVX ewes strongly suggests that kisspeptin is fundamentally involved in the control of seasonal changes in reproductive function.

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Crossref · 10.1210/en.2006-1435

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  • In animal models, the KISS1 neurons appear to mediate sex steroid feedback effects in the hypothalamus.

    “In animal models, the KISS1 neurons appear to mediate sex steroid feedback effects in the hypothalamus.58,59”

    From Pubertal development and regulation (2016) · cites this paper as [59]

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Authors
Smith, J. T., Clay, C. M., Caraty, A., & Clarke, I. J.
Affiliations
  • Monash University (AU)
  • Colorado State University (US)
  • Université de Tours (FR)
Corresponding author
Clarke, Iain J.
Venue
Endocrinology
Published
2007-03
Volume
148
Issue
3
Pages
1150-1157
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2058782486
Cited by
404
References
73
Citations by year
2026: 4 · 2025: 5 · 2024: 10 · 2023: 9 · 2022: 17 · 2021: 26 · 2020: 16 · 2019: 18 · 2018: 30 · 2017: 16 · 2016: 18 · 2015: 25 · 2014: 22 · 2013: 35 · 2012: 32
FWCI
24.93
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Monash University
  • Medical Research Council
  • National Health and Medical Research Council
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
KISS1, kisspeptin, GPR54, hypothalamus, arcuate nucleus, ewes, sex steroids, estradiol, progesterone, ovariectomy, seasonal reproduction, anestrus, GnRH secretion, puberty, negative feedback, kisspeptin receptor
MeSH terms
Animals, Arcuate Nucleus of Hypothalamus, Estradiol, Female, Gene Expression Regulation, Hypothalamus, Ovariectomy, Progesterone, RNA, Messenger, Seasons, Gonadal Steroid Hormones, Sheep, Tissue Distribution, Tumor Suppressor Proteins

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