Cited by 408Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesSchizophrenia research and treatment

Genetic variation in components of dopamine neurotransmission impacts ventral striatal reactivity associated with impulsivity

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Forbes, E E, Brown, S M, Kimak, M, Ferrell, R E, Manuck, S B, Hariri, A R·2009·Molecular Psychiatry

Abstract

Individual differences in traits such as impulsivity involve high reward sensitivity and are associated with risk for substance use disorders. The ventral striatum (VS) has been widely implicated in reward processing, and individual differences in its function are linked to these disorders. Dopamine (DA) plays a critical role in reward processing and is a potent neuromodulator of VS reactivity. Moreover, altered DA signaling has been associated with normal and pathological reward-related behaviors. Functional polymorphisms in DA-related genes represent an important source of variability in DA function that may subsequently impact VS reactivity and associated reward-related behaviors. Using an imaging genetics approach, we examined the modulatory effects of common, putatively functional DA-related polymorphisms on reward-related VS reactivity associated with self-reported impulsivity. Genetic variants associated with relatively increased striatal DA release (DRD2 -141C deletion) and availability (DAT1 9-repeat), as well as diminished inhibitory postsynaptic DA effects (DRD2 -141C deletion and DRD4 7-repeat), predicted 9-12% of the interindividual variability in reward-related VS reactivity. In contrast, genetic variation directly affecting DA signaling only in the prefrontal cortex (COMT Val158Met) was not associated with variability in VS reactivity. Our results highlight an important role for genetic polymorphisms affecting striatal DA neurotransmission in mediating interindividual differences in reward-related VS reactivity. They further suggest that altered VS reactivity may represent a key neurobiological pathway through which these polymorphisms contribute to variability in behavioral impulsivity and related risk for substance use disorders.

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  • Experimental data suggest an association between risky and impulsive behavior, characteristic of ADHD, and dopamine release or dopamine-dependent BOLD response to rewards in the striatum.

    “Additionally, experimental data suggest an association between risky and impulsive behavior, which is characteristic of ADHD,14–16 and dopamine release or dopamine-dependent BOLD response to rewards in the striatum.11,17–20”
  • The function of the reward circuitry can be modulated by functional genetic polymorphisms influencing dopamine neurotransmission in the striatum, directly (e.g. DAT1) or indirectly (e.g. NOS1).

    “The function of the reward circuitry can be modulated by functional genetic polymorphisms influencing dopamine neurotransmission in the striatum, directly (e.g. the dopamine transporter gene [DAT1]) or indirectly (e.g. the nitric oxide synthase gene [NOS1]).18,22,26”
  • Some promising initial evidence has indicated that the DAT1 3′UTR polymorphism may be modulating the responsivity of the striatum during a response inhibition and a reward-processing paradigm.

    “Some promising initial evidence has indicated that the DAT13′UTR polymorphism may be modulating the responsivity of the striatum during a response inhibition and a reward-processing paradigm (Durston et al, 2008; Forbes et al, 2009).”

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Authors
Forbes, E. E., Brown, S. M., Kimak, M., Ferrell, R. E., Manuck, S. B., & Hariri, A. R.
Affiliations
University of Pittsburgh (US)
Corresponding author
Hariri, A R
Venue
Molecular Psychiatry
Published
2007-09-25
Volume
14
Issue
1
Pages
60-70
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W1976177962
Cited by
408
References
83
Citations by year
2026: 3 · 2025: 5 · 2024: 5 · 2023: 3 · 2022: 10 · 2021: 10 · 2020: 55 · 2019: 14 · 2018: 17 · 2017: 20 · 2016: 30 · 2015: 33 · 2014: 29 · 2013: 44 · 2012: 45
FWCI
8.59
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Alliance for Research on Schizophrenia and Depression
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (P01HL040962)
  • National Institute of Mental Health (KO1 MH074769, K01MH072837, K01MH074769)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
impulsivity, ventral striatum, dopamine signaling, reward processing, genetic polymorphism, COMT Val158Met, striatal dopamine release, dopamine availability, individual differences, substance use disorders, imaging genetics
MeSH terms
Adult, Analysis of Variance, Basal Ganglia, Catechol O-Methyltransferase, Dopamine, Female, Gene Frequency, Genotype, Humans, Image Processing, Computer-Assisted, Impulsive Behavior, Magnetic Resonance Imaging, Male, Middle Aged, Synaptic Transmission, Oxygen, Reward, Genetic Variation, Case-Control Studies, Dopamine Plasma Membrane Transport Proteins, Receptors, Dopamine D3, Receptors, Dopamine D4, Young Adult

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