Cited by 85Sleep and Wakefulness ResearchRegulation of Appetite and ObesityNeuropeptides and Animal Physiology

Changes in hypothalamic corticotropin-releasing hormone, neuropeptide Y, and proopiomelanocortin gene expression during chronic rapid eye movement sleep deprivation of rats

Koban, Michael, Le, Wei Wei, Hoffman, Gloria E.·2006·Endocrinology

Abstract

Chronic rapid eye movement (paradoxical) sleep deprivation (REM-SD) of rats leads to two conspicuous pathologies: hyperphagia coincident with body weight loss, prompted by elevated metabolism. Our goals were to test the hypotheses that 1) as a stressor, REM-SD would increase CRH gene expression in the hypothalamus and that 2) to account for hyperphagia, hypothalamic gene expression of the orexigen neuropeptide Y (NPY) would increase, but expression of the anorexigen proopiomelanocortin (POMC) would decrease. Enforcement of REM-SD of adult male rats for 20 d with the platform (flowerpot) method led to progressive hyperphagia, increasing to approximately 300% of baseline; body weight steadily declined by approximately 25%. Consistent with changes in food intake patterns, NPY expression rapidly increased in the hypothalamic arcuate nucleus by d 5 of REM-SD, peaking at d 20; by contrast, POMC expression decreased progressively during REM-SD. CRH expression was increased by d 5, both in mRNA and ability to detect neuronal perikaryal staining in paraventricular nucleus with immunocytochemistry, and it remained elevated thereafter with modest declines. Taken together, these data indicate that changes in hypothalamic neuropeptides regulating food intake are altered in a manner consistent with the hyperphagia seen with REM-SD. Changes in CRH, although indicative of REM-SD as a stressor, suggest that the anorexigenic actions of CRH are ineffective (or disabled). Furthermore, changes in NPY and POMC agree with current models of food intake behavior, but they are opposite to their acute effects on peripheral energy metabolism and thermogenesis.

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Crossref · 10.1210/en.2005-0695

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  • The mechanisms by which sleep loss activates ACTH release are likely to involve increased brain CRH levels rather than increased pituitary sensitivity to CRH.

    “The mechanisms by which sleep loss activates ACTH release are likely to involve increased brain CRH levels rather than increased pituitary sensitivity to CRH, because rodents studies have reported enhanced brain synthesis and release of CRH (32–34) but also reduced CRH binding in the pituitary (32) after acute and chronic sleep restriction.”

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Authors
Koban, M., Le, W. W., & Hoffman, G. E.
Affiliations
  • Morgan State University (US)
  • University of Maryland, Baltimore (US)
Corresponding author
Hoffman, Gloria E.
Venue
Endocrinology
Published
2006-01-01
Volume
147
Issue
1
Pages
421-431
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2069250032
Cited by
85
References
97
Citations by year
2025: 1 · 2024: 3 · 2023: 1 · 2022: 6 · 2020: 5 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 7 · 2015: 3 · 2014: 3 · 2013: 10 · 2012: 9
FWCI
1.82
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of General Medical Sciences (S06GM051971, 2-SO6-GM-51971-04)
  • National Institute of Neurological Disorders and Stroke (NS 43788, R01NS043788)
  • National Center for Research Resources (G12-RR-17581-02, G12RR017581)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
REM sleep deprivation, corticotropin-releasing factor, neuropeptide Y, proopiomelanocortin, hypothalamus, hyperphagia, food intake regulation, arcuate nucleus, paraventricular nucleus, stress response, weight loss, energy metabolism, thermogenesis
MeSH terms
Animals, Corticotropin-Releasing Hormone, Hypothalamus, Male, Neuropeptide Y, Pro-Opiomelanocortin, Sleep Deprivation, Sleep, REM, Weight Loss, Rats, Sprague-Dawley, Rats

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