Cited by 324Neurotransmitter Receptor Influence on BehaviorSubstance Abuse Treatment and OutcomesNeuroscience and Neuropharmacology Research

Overexpression of dopamine D2 receptors reduces alcohol self‐administration

Thanos, Panayotis K., Volkow, Nora D., Freimuth, Paul, Umegaki, Hiroyuki, Ikari, Hiroyuki, Roth, George, Ingram, Donald K., Hitzemann, Robert·2001·Journal of Neurochemistry

Abstract

The mechanism(s) underlying predisposition to alcohol abuse are poorly understood but may involve brain dopamine system(s). Here we used an adenoviral vector to deliver the dopamine D2 receptor (DRD2) gene into the nucleus accumbens of rats, previously trained to self‐administer alcohol, and to assess if DRD2 levels regulated alcohol preference and intake. We show that increases in DRD2 (52%) were associated with marked reductions in alcohol preference (43%), and alcohol intake (64%) of ethanol preferring rats, which recovered as the DRD2, returned to baseline levels. In addition, this DRD2 overexpression similarly produced significant reductions in ethanol non‐preferring rats, in both alcohol preference (16%) and alcohol intake (75%). This is the first evidence that overexpression of DRD2 reduces alcohol intake and suggests that high levels of DRD2 may be protective against alcohol abuse.

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Crossref · 10.1046/j.1471-4159.2001.00492.x

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  • In the striatum, D2Rs mediate indirect pathway signalling to frontal cortical regions; their down-regulation enhances sensitization to drugs, whereas up-regulation interferes with drug consumption.

    “In the striatum, D2Rs mediate signalling in the striatal indirect pathway that modulates frontal cortical regions; and their down-regulation enhances sensitization to the effects of drugs in animal models (68), whereas their up-regulation interferes with drug consumption (69,70).”

    From Obesity and addiction: Neurobiological overlaps (2013) · cites this paper as [70]

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Authors
Thanos, P. K., Volkow, N. D., Freimuth, P., Umegaki, H., Ikari, H., Roth, G., Ingram, D. K., & Hitzemann, R.
Affiliations
  • Brookhaven National Laboratory (US)
  • Pediatrics and Genetics (US)
  • Nagoya University (JP)
  • National Institute on Aging (US)
  • Oregon Health & Science University (US)
Corresponding author
Thanos, Panayotis K.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2001-09
Volume
78
Issue
5
Pages
1094-1103
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2141536473
Cited by
324
References
57
Citations by year
2026: 3 · 2025: 4 · 2024: 9 · 2023: 8 · 2022: 7 · 2021: 12 · 2020: 27 · 2019: 14 · 2018: 13 · 2017: 8 · 2016: 16 · 2015: 22 · 2014: 12 · 2013: 20 · 2012: 16
FWCI
6.04
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Energy
  • National Institute on Alcohol Abuse and Alcoholism (R01AA011034, AA 07574, AA11034, T32AA007574)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
dopamine D2 receptor, alcohol self-administration, alcohol preference, alcohol consumption, nucleus accumbens, dopaminergic system, adenoviral gene transfer
MeSH terms
Adenoviridae, Alcohol Drinking, Animals, Behavior, Animal, Brain Chemistry, Disease Models, Animal, Nucleus Accumbens, Self Administration, Genetic Therapy, Gene Expression, Rats, Sprague-Dawley, Receptors, Dopamine D2, Rats

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