Cited by 76Neuroendocrine regulation and behaviorNeurotransmitter Receptor Influence on BehaviorNeuropeptides and Animal Physiology

Peripheral oxytocin administration reduces ethanol consumption in rats

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MacFadyen, Kaley, Loveless, Rebecca, DeLucca, Brandon, Wardley, Krystal, Deogan, Sumeet, Thomas, Cameron, Peris, Joanna·2016·Pharmacology Biochemistry and Behavior

Abstract

The neuropeptide oxytocin interacts with mesolimbic dopamine neurons to mediate reward associated with filial behaviors, but also other rewarding behaviors such as eating or taking drugs of abuse. Based on its efficacy to decrease intake of other abused substances, oxytocin administration is implicated as a possible treatment for excessive alcohol consumption. We tested this hypothesis by measuring ethanol intake in male Sprague-Dawley rats injected with oxytocin or saline using two different ethanol self-administration paradigms. First, a dose-response curve was constructed for oxytocin inhibition of fluid intake using a modified drinking-in-the-dark model with three bottles containing .05% saccharine, 10% ethanol in saccharine, and 15% ethanol in saccharine. Doses of oxytocin tested were 0.05, 0.1, 0.3, and 0.5mg/kg (I.P.). Next, rats received 0.3mg/kg oxytocin preceding operant sessions in which they were trained to lever-press for either plain gelatin or ethanol gelatin in order to compare oxytocin inhibition of ethanol intake versus caloric intake. For the three-bottle choice study, rats consumed significantly less ethanol when treated with the three higher doses of oxytocin on the injection day. In the operant study, 0.3mg/kg oxytocin significantly decreased ethanol gel consumption to a greater extent than plain gel consumption, both in terms of the amount of gel eaten and calories consumed. These data affirm oxytocin's efficacy for decreasing ethanol intake in rats, and confirm clinical studies suggesting oxytocin as a potential treatment for alcoholism.

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Authors
MacFadyen, K., Loveless, R., DeLucca, B., Wardley, K., Deogan, S., Thomas, C., & Peris, J.
Affiliations
  • University of Florida (US)
  • University of Florida Health (US)
Corresponding author
Peris, Joanna
Venue
Pharmacology Biochemistry and Behavior
Publisher
Elsevier BV
Published
2016-01
Volume
140
Pages
27-32
ISSN
0091-3057 (ISSN-L)
OpenAlex
W1887281586
Cited by
76
References
28
Citations by year
2026: 2 · 2025: 7 · 2024: 4 · 2023: 3 · 2022: 7 · 2021: 10 · 2020: 7 · 2019: 7 · 2018: 13 · 2017: 12 · 2016: 4
FWCI
15.81
Type
journal article
Language
en
Open access
Locations
  • Pharmacology Biochemistry and Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
University of Florida
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
oxytocin, ethanol self-administration, alcohol consumption, alcoholism treatment, energy intake, mesolimbic dopamine system, neuropeptides
MeSH terms
Alcohol Deterrents, Alcohol Drinking, Animals, Energy Intake, Conditioning, Operant, Darkness, Dose-Response Relationship, Drug, Gels, Male, Oxytocin, Self Administration, Rats, Sprague-Dawley, Rats

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