Cited by 102Regulation of Appetite and ObesityHypothalamic control of reproductive hormonesNeurotransmitter Receptor Influence on Behavior

Sex and estrogens alter the action of glucagon-like peptide-1 on reward

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Richard, Jennifer E., Anderberg, Rozita H., López-Ferreras, Lorena, Olandersson, Kajsa, Skibicka, Karolina P.·2016·Biology of Sex Differences

Abstract

BACKGROUND: Feeding behavior is regulated through an intricate array of anorexic and orexigenic hormones acting on the central nervous system (CNS). Some of these hormones may have differential effects in males and females, effects potentially attributed to actions of gonadal steroids, especially estrogens. Central stimulation of the glucagon-like peptide-1 (GLP-1) receptors reduces feeding and food-reward behavior by acting on CNS regions important for the anorexic actions of estrogens. Thus, we propose that the action of GLP-1 on food intake and reward may differ between sexes. METHODS: Male and female rats were centrally injected with the GLP-1 analog exendin-4 (Ex4) in a non-deprived or food-restricted state; reward behavior was measured in a progressive ratio operant conditioning task. Intake of chow and palatable food were also measured. To determine if sex differences in the actions of Ex4 are due to interactions with estrogens, Ex4 treatment was preceded by treatment with a nonselective estrogen receptor-α (ERα) and ERβ or ERα-selective antagonist. RESULTS: Central injection of Ex4 revealed increased reward behavior suppression in females, compared to males, in the operant conditioning task. This increase was present in both non-deprived and food-restricted animals with larger differences in the fed state. Intake of chow and palatable food, after Ex4, were similar in males and females. Food reward, but not food intake, effect of Ex4 was attenuated by pretreatment with ER antagonist in both sexes, suggesting that estrogens may modulate effects of Ex4 in both sexes. Furthermore, central pretreatment with ERα-selective antagonist was sufficient to attenuate effects of Ex4 on reward. CONCLUSIONS: Collectively, these data reveal that females display much higher sensitivity to the food reward impact of central GLP-1 receptor activation. Surprisingly, they also demonstrate that central ERα signaling is necessary for the actions of GLP-1 on food-reward behavior in both sexes.

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  1. [44]Shirazi RH, Dickson SL, Skibicka KP. Gut peptide GLP-1 and its analogue, exendin-4, decrease alcohol intake and reward. Plos One. 2013;8(4). doi:10.1371/journal.pone.0061965. PMC3628574 23613987 · DOI

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Authors
Richard, J. E., Anderberg, R. H., López-Ferreras, L., Olandersson, K., & Skibicka, K. P.
Affiliations
University of Gothenburg (SE)
Corresponding author
Skibicka, Karolina P.
Venue
Biology of Sex Differences
Published
2016-01-16
Volume
7
Issue
1
Pages
6-6
ISSN
2042-6410 (ISSN-L)
OpenAlex
W2272001501
Cited by
102
References
82
Citations by year
2026: 21 · 2025: 19 · 2024: 11 · 2023: 8 · 2022: 14 · 2021: 8 · 2020: 5 · 2019: 6 · 2018: 3 · 2017: 5 · 2016: 2
FWCI
3.39
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Biology of Sex Differences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Svenska Forskningsrådet Formas (2014-2945 and 2013-7107)
  • Novo Nordisk Foundation Excellence project grant
  • Ragnar Söderberg Foundation
  • Harald Jeanssons Stiftelse
  • Greta Jeanssons Stiftelse
  • Magnus Bergvalls Stiftelse
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
glucagon-like peptide-1, exendin-4, food reward, sex differences, estrogen receptor alpha, estrogen receptor beta, sex steroids, feeding behavior, dietary intake, palatable food, dietary restriction

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