Cited by 20Neurotransmitter Receptor Influence on BehaviorSubstance Abuse Treatment and OutcomesAlcohol Consumption and Health Effects

Mifepristone decreases chronic voluntary ethanol consumption in Rhesus macaques

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Jimenez, Vanessa A., Walter, Nicole A.R., Shnitko, Tatiana A., Newman, Natali, Diem, Kaya, Vanderhooft, Lauren, Hunt, Hazel, Grant, Kathleen A.·2020·The Journal of Pharmacology and Experimental Therapeutics

Abstract

= 9 monkeys). After establishment of chronic ethanol intake, a MIFE dosing regimen that modeled a study of rodent drinking and human alcohol craving was evaluated. Three doses of MIFE (17, 30, and 56 mg/kg per day) were each administered for four consecutive days. Both 30 and 56 mg/kg decreased ethanol intake compared with baseline drinking levels without a change in water intake. The dose of 56 mg/kg per day of MIFE produced the largest reduction in ethanol self-administration, with the average intake at 57% of baseline intakes. Cortisol was elevated during MIFE dosing, and a mediation analysis revealed that the effect on ethanol drinking was fully mediated through cortisol. During a forced abstinence phase, access to 1.5 g/kg ethanol resulted in relapse in all drinkers and was not altered by treatment with 56 mg/kg MIFE. Overall, these results show that during active drinking MIFE is efficacious in reducing heavy alcohol intake in a monkey model, an effect that was related to MIFE-induced increase in cortisol. However, MIFE treatment did not eliminate ethanol drinking. Further, cessation of MIFE treatment resulted in a rapid return to baseline intakes, and MIFE was not effective in preventing a relapse during early abstinence. SIGNIFICANCE STATEMENT: Mifepristone reliably decreases average daily ethanol self-administration in a nonhuman primate model. This effect was mediated by cortisol, was most effective during open-access conditions, and did not prevent or reduce relapse drinking.

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Authors
Jimenez, V. A., Walter, N. A. R., Shnitko, T. A., Newman, N., Diem, K., Vanderhooft, L., Hunt, H., & Grant, K. A.
Affiliations
Oregon National Primate Research Center (US)
Corresponding author
Grant, Kathleen A.
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
2020-11
Volume
375
Issue
2
Pages
258-267
ISSN
0022-3565 (ISSN-L)
OpenAlex
W3082414567
Cited by
20
References
72
Citations by year
2026: 2 · 2025: 2 · 2024: 5 · 2023: 6 · 2022: 4 · 2021: 1
FWCI
1.26
Type
journal article
Language
en
Open access
Locations
  • Journal of Pharmacology and Experimental Therapeutics (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (P51OD011092)
  • National Institute on Alcohol Abuse and Alcoholism (U01AA013641, U24AA013641, U01AA013510, R24AA019431)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
Keywords
mifepristone, ethanol self-administration, alcohol craving, cortisol, relapse, alcoholism treatment, rhesus monkeys, nonhuman primate model, mediation analysis
MeSH terms
Alcohol Drinking, Animals, Drinking, Macaca mulatta, Male, Self Administration, Mifepristone

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