Cited by 139Regulation of Appetite and ObesityCircadian rhythm and melatoninHypothalamic control of reproductive hormones

The regulation of seasonal changes in food intake and body weight

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Ebling, F. J. P., Barrett, P.·2008·Journal of Neuroendocrinology

Abstract

Seasonal rhythms of body weight, reflecting altered food intake, energy storage and expenditure, are a common feature of mammals inhabiting temperate and arctic latitudes. They have evolved so that predictable annual changes in the external environment can be anticipated and animals can adjust their physiology and behaviour in preparation for the changing demands of the seasons. These long-term changes in energy balance are not simply effected by the brain centres and peptidergic pathways known to underlie short-term homeostatic regulation. Screens of altered gene expression in Siberian hamsters comparing the anabolic summer state in long photoperiods and the catabolic 'winter' state in short photoperiods have identified differential gene expression in the hypothalamus. The majority of gene expression changes are confined to two restricted areas: the dorsomedial posterior arcuate nucleus, and the ventral ependymal layer of the third ventricle. Functions encoded by these 'seasonal' genes include thyroid hormone metabolism, retinoic acid and histaminergic signalling, and VGF and secretogranin production. The changes in thyroid hormone availability that are brought about by differential activity of deiodinase enzymes are of particular importance because experimental manipulation of central thyroid levels can prevent seasonal cyclicity. Given the importance of thyroid hormone in the initial development of the brain, we hypothesise that thyroid hormone-dependent plasticity of hypothalamic connections and neurogenesis underlie seasonal cycles of food intake and body weight.

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Research works printed but not linked: 5

  1. Morgan PJ Photoperiodic signalling beyond the melatonin receptor. J Neuroendocrinol 2008; 20: in press.
  2. Bartness TJ, Goldman BD, Bittman EL. Suprachiasmatic nucleus lesions block responses to systemic melatonin infusions in Siberian hamsters. Am J Physiol 1991; 260: R102-R112.
  3. Ebling FJP, Wilson D, Wilson D, Wood J, Hughes D, Mercer JG, Morgan PJ, Barrett P Localisation of the TRH secretory system in the Siberian hamster. J Neuroendocrinol 2008; 20: 576-586.
  4. Barrett P, Ivanova E, Graham ES, Ross AW, Wilson D, Ple H, Mercer JG, Ebling FJP, Schuhler S, Dupre SM, Loudon ASI, Morgan PJ. Photoperiodic regulation of GPR50, Nestin and CRBP1 in tanycytes of the third ventri- cle ependymal layer of the Siberian hamster. J Endocr 2006; 191: 687- 698.
  5. Huang L, De Vries GJ, Bittman EL. Photoperiod regulates neuronal bromodeoxyuridine labeling in the brain of a seasonally breeding mam- mal. J Neurobiol 1998; 36: 410-420.

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Authors
Ebling, F. J. P., & Barrett, P.
Affiliations
  • University of Nottingham (GB)
  • University of Aberdeen (GB)
Corresponding author
Ebling, F. J. P.
Venue
Journal of Neuroendocrinology
Publisher
Wiley
Published
2008-06
Volume
20
Issue
6
Pages
827-833
ISSN
  • 0953-8194 (ISSN-L)
  • 1365-2826
OpenAlex
W2019911667
Cited by
139
References
59
Citations by year
2025: 5 · 2024: 5 · 2023: 18 · 2022: 4 · 2021: 3 · 2020: 4 · 2019: 9 · 2018: 6 · 2017: 11 · 2016: 8 · 2015: 6 · 2014: 12 · 2013: 9 · 2012: 15
FWCI
0.86
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • European Commission (LSHM‐CT‐2003‐503041)
  • Biotechnology and Biological Sciences Research Council (S17106)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
seasonal rhythms, dietary intake, body weight, energy balance, Siberian hamster, photoperiod, hypothalamus, arcuate nucleus, third ventricle, thyroid hormones, deiodinases, retinoic acid, VGF, secretogranin, gene expression
MeSH terms
Animals, Body Weight, Circadian Rhythm, Eating, Energy Metabolism, Cricetinae, Homeostasis, Hypothalamus, Neuronal Plasticity, Seasons, Thyroid Hormones, Photoperiod, Leptin

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