Cited by 198Gambling Behavior and TreatmentsNeurotransmitter Receptor Influence on BehaviorObsessive-Compulsive Spectrum Disorders

In vivo evidence for greater amphetamine-induced dopamine release in pathological gambling: a positron emission tomography study with [11C]-(+)-PHNO

Boileau, I, Payer, D, Chugani, B, Lobo, D S S, Houle, S, Wilson, A A, Warsh, J, Kish, S J +1 more·2014·Molecular Psychiatry

Abstract

Drug addiction has been associated with deficits in mesostriatal dopamine (DA) function, but whether this state extends to behavioral addictions such as pathological gambling (PG) is unclear. Here we used positron emission tomography and the D3 receptor-preferring radioligand [(11)C]-(+)-PHNO during a dual-scan protocol to investigate DA release in response to oral amphetamine in pathological gamblers (n=12) and healthy controls (n=11). In contrast with human neuroimaging findings in drug addiction, we report the first evidence that PG is associated with greater DA release in dorsal striatum (54-63% greater [(11)C]-(+)-PHNO displacement) than controls. Importantly, dopaminergic response to amphetamine in gamblers was positively predicted by D3 receptor levels (measured in substantia nigra), and related to gambling severity, allowing for construction of a mechanistic model that could help explain DA contributions to PG. Our results are consistent with a hyperdopaminergic state in PG, and support the hypothesis that dopaminergic sensitization involving D3-related mechanisms might contribute to the pathophysiology of behavioral addictions.

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Crossref · 10.1038/mp.2013.163

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Authors
Boileau, I., Payer, D., Chugani, B., Lobo, D. S. S., Houle, S., Wilson, A. A., Warsh, J., Kish, S. J., & Zack, M.
Affiliations
  • Centre for Addiction and Mental Health (CA)
  • University of Toronto (CA)
Corresponding author
Zack, M
Venue
Molecular Psychiatry
Published
2013-12-10
Volume
19
Issue
12
Pages
1305-1313
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W1989017766
Cited by
198
References
76
Citations by year
2026: 1 · 2025: 6 · 2024: 6 · 2023: 10 · 2022: 8 · 2021: 9 · 2020: 53 · 2019: 14 · 2018: 16 · 2017: 12 · 2016: 21 · 2015: 28 · 2014: 14
FWCI
23.34
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Social Sciences › Psychology › Clinical Psychology › Gambling Behavior and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Social Sciences › Psychology › Clinical Psychology › Obsessive-Compulsive Spectrum Disorders
Keywords
gambling addiction, dopamine release, amphetamine challenge, dopamine D3 receptor, [11C]-(+)-PHNO, dorsal striatum, substantia nigra, hyperdopaminergic state, behavioral addiction, gambling severity
MeSH terms
Adult, Amphetamine, Brain, Dopamine, Gambling, Humans, Male, Models, Neurological, Oxazines, Severity of Illness Index, Dopamine Agents, Dopamine Agonists, Radiopharmaceuticals, Positron-Emission Tomography, Receptors, Dopamine D3

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