Cited by 96Hypothalamic control of reproductive hormonesNeuropeptides and Animal PhysiologyReproductive Physiology in Livestock

Kisspeptin and seasonality in sheep

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Clarke, Iain J., Smith, Jeremy T., Caraty, Alain, Goodman, Robert L., Lehman, Michael N.·2009·Peptides

Abstract

Sheep are seasonal breeders, experiencing a period of reproductive quiescence during spring and early summer. During the non-breeding period, kisspeptin expression in the arcuate nucleus is markedly reduced. This strongly suggests that the mechanisms that control seasonal changes in reproductive function involve kisspeptin neurons. Kisspeptin cells appear to regulate GnRH neurons and transmit sex-steroid feedback to the reproductive axis. Since the non-breeding season is characterized by increased negative feedback of estrogen on GnRH secretion, the kisspeptin neurons seem to be fundamentally involved in the determination of breeding state. The reduction in kisspeptin neuronal function during the non-breeding season can be corrected by infusion of kisspeptin, which causes ovulation in seasonally acyclic females.

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Crossref · 10.1016/j.peptides.2008.08.022

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  • In mammals, the pulsatile secretion of GnRH is reduced in the nonbreeding (anestrous) season, and the reactivation of the hypothalamic-pituitary-gonadal axis is dictated by a seasonal-dependent increase in kisspeptin expression and a concomitant reduction in Gonadotropin-inhibitory hormone (GnIH) production.

    “In mammals, the pulsatile secretion of GnRH is reduced in the nonbreeding (anestrous) season, and the reactivation of the hypothalamic–pituitary–gonadal axis is dictated by a seasonal-dependent increase in kisspeptin expression and a concomitant reduction in Gonadotropin-inhibitory hormone (GnIH) production (26–28).”

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Authors
Clarke, I. J., Smith, J. T., Caraty, A., Goodman, R. L., & Lehman, M. N.
Affiliations
  • Monash University (AU)
  • Université de Tours (FR)
  • West Virginia University (US)
  • Western University (CA)
Corresponding author
Clarke, Iain J.
Venue
Peptides
Publisher
Elsevier BV
Published
2009-01
Volume
30
Issue
1
Pages
154-163
ISSN
0196-9781 (ISSN-L)
OpenAlex
W2066860383
Cited by
96
References
43
Citations by year
2026: 5 · 2025: 6 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 5 · 2020: 7 · 2019: 3 · 2018: 2 · 2017: 1 · 2016: 4 · 2015: 2 · 2014: 1 · 2013: 8 · 2012: 7
FWCI
1.44
Type
journal article
Language
en
Open access
Locations
  • Peptides (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
  • HAL (submittedVersion)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD039916)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Reproductive Physiology in Livestock
Keywords
kisspeptin, seasonal variation, sheep, seasonal reproduction, reproductive quiescence, arcuate nucleus, GnRH neurons, estrogen negative feedback, sex steroid feedback, ovulation
MeSH terms
Animals, Gonadotropins, Hypothalamus, Gonadotropin-Releasing Hormone, Melatonin, Reproduction, Seasons, Sheep, Gene Expression, Photoperiod, Tumor Suppressor Proteins

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