Cited by 134Neurotransmitter Receptor Influence on BehaviorSubstance Abuse Treatment and OutcomesNeural and Behavioral Psychology Studies

Stimulant-induced dopamine increases are markedly blunted in active cocaine abusers

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Volkow, N D, Tomasi, D, Wang, G-J, Logan, J, Alexoff, D L, Jayne, M, Fowler, J S, Wong, C +2 more·2014·Molecular Psychiatry

Abstract

Dopamine signaling in nucleus accumbens is essential for cocaine reward. Interestingly, imaging studies have reported blunted dopamine increases in striatum (assessed as reduced binding of [11C]raclopride to D2/D3 receptors) in detoxified cocaine abusers. Here, we evaluate whether the blunted dopamine response reflected the effects of detoxification and the lack of cocaine-cues during stimulant exposure. For this purpose we studied 62 participants (43 non-detoxified cocaine abusers and 19 controls) using positron emission tomography and [11C]raclopride (radioligand sensitive to endogenous dopamine) to measure dopamine increases induced by intravenous methylphenidate and in 24 of the cocaine abusers, we also compared dopamine increases when methylphenidate was administered concomitantly with a cocaine cue-video versus a neutral-video. In controls, methylphenidate increased dopamine in dorsal (effect size 1.4; P<0.001) and ventral striatum (location of accumbens) (effect size 0.89; P<0.001), but in cocaine abusers methylphenidate’s effects did not differ from placebo and were similar whether cocaine-cues were present or not. In cocaine abusers despite the markedly attenuated dopaminergic effects, the methylphenidate-induced changes in ventral striatum were associated with intense drug craving. Our findings are consistent with markedly reduced signaling through D2 receptors during intoxication in active cocaine abusers regardless of cues exposure, which might contribute to compulsive drug use.

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  • Conditioned cues in the incentive salience process appear to drive dopamine signalling to maintain drug-taking motivation even when pharmacological effects diminish.

    “Conditioned cues within the incentive salience process appear to drive dopamine signalling to maintain motivation to take the drug, even when its pharmacological effects lessen.”

    From Neurobiology of addiction: a neurocircuitry analysis (2016) · cites this paper as [61]

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  1. [37]Wang GJ Smith L Volkow ND Telang F Logan J Tomasi D Decreased dopamine activity predicts relapse in methamphetamine abusers Mol Psychiatry 2012 17 918 925 21747399 PMC3261322

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Authors
Volkow, N. D., Tomasi, D., Wang, G.-J., Logan, J., Alexoff, D. L., Jayne, M., Fowler, J. S., Wong, C., Yin, P., & Du, C.
Affiliations
  • National Institute on Alcohol Abuse and Alcoholism (US)
  • Brookhaven National Laboratory (US)
  • Stony Brook University (US)
Corresponding author
Volkow, N D
Venue
Molecular Psychiatry
Published
2014-06-10
Volume
19
Issue
9
Pages
1037-1043
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2162066549
Cited by
134
References
48
Citations by year
2026: 4 · 2025: 5 · 2024: 8 · 2023: 11 · 2022: 17 · 2021: 11 · 2020: 7 · 2019: 11 · 2018: 10 · 2017: 21 · 2016: 18 · 2015: 8 · 2014: 3
FWCI
7.61
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Alcohol Abuse and Alcoholism (ZIAAA000550)
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 › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
cocaine dependence, dopamine signaling, nucleus accumbens, striatum, D2/D3 receptors, cocaine cues, drug craving, compulsive drug use, cocaine detoxification
MeSH terms
Central Nervous System Stimulants, Brain, Brain Mapping, Cocaine, Cues, Dopamine, Humans, Male, Methylphenidate, Middle Aged, Video Recording, Visual Perception, Cohort Studies, Dopamine Uptake Inhibitors, Radiopharmaceuticals, Cocaine-Related Disorders, Raclopride, Positron-Emission Tomography, Craving

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