Role of oxytocin in energy metabolism
Abstract
The basic mechanisms that lead obesity are not fully understood; however, several peptides undoubtedly play a role in regulating body weight. Obesity, a highly complex metabolic disorder, involves central mechanisms that control food intake and energy expenditure. Previous studies have shown that central or peripheral oxytocin administration induces anorexia. Recently, in an apparent discrepancy, rodents that were deficient in oxytocin or the oxytocin receptor were shown to develop late-onset obesity without changing their total food intake, which indicates the physiological importance of oxytocin to body metabolism. Oxytocin is synthesized not only within magnocellular and parvocellular neurons but also in several organs, including the ovary, uterus, placenta, testis, thymus, kidney, heart, blood vessels, and skin. The presence of oxytocin receptors in neurons, the myometrium and myoepithelial cells is well recognized; however, this receptor has also been identified in other tissues, including the pancreas and adipose tissue. The oxytocin receptor is a typical class I G protein-coupled receptor that is primarily linked to phospholipase C-β via Gq proteins but can also be coupled to other G proteins, leading to different functional effects. In this review, we summarize the present knowledge of the effects of oxytocin on controlling energy metabolism, focusing primarily on the role of oxytocin on appetite regulation, thermoregulation, and metabolic homeostasis.
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Oxytocin regulates feeding and metabolism at several sites, and its receptors are present throughout the gastrointestinal tract and on gastric vagal nerve endings.
“Oxytocin regulates feeding and metabolism at multiple sites (34,35).Its receptors are expressed throughout the gastrointestinal tract, and on gastric vagal nerve endings (36).”
From Intranasal Oxytocin: Myths and Delusions (2016) · cites this paper as [34]
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- Authors
- Chaves, V. E., Tilelli, C. Q., Brito, N. A., & Brito, M. N.
- Affiliations
- Federal University of São João del-Rei (BR)
- Universidade Estadual de Maringá (BR)
- Corresponding author
- Chaves, Valéria Ernestânia
- Venue
- Peptides
- Publisher
- Elsevier BV
- Published
- 2013-07
- Volume
- 45
- Pages
- 9-14
- ISSN
- 0196-9781 (ISSN-L)
- OpenAlex
- W2030421266
- Cited by
- 90
- References
- 73
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 6 · 2023: 2 · 2022: 5 · 2021: 13 · 2020: 4 · 2019: 4 · 2018: 10 · 2017: 11 · 2016: 7 · 2015: 9 · 2014: 8 · 2013: 2
- FWCI
- 1.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Peptides (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Keywords
- oxytocin, energy metabolism, obesity, appetite regulation, thermoregulation, metabolic homeostasis, oxytocin receptor, G protein-coupled receptors, Gq protein, phospholipase C beta, dietary intake, energy expenditure
- MeSH terms
- Adipose Tissue, Appetite Regulation, Body Temperature Regulation, Body Weight, Eating, Energy Metabolism, Homeostasis, Humans, Neurons, Obesity, Oxytocin, Receptors, Oxytocin, Leptin, Phospholipase C beta
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