Cited by 90Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorParkinson's Disease Mechanisms and Treatments

Correlation of individual differences in schizotypal personality traits with amphetamine-induced dopamine release in striatal and extrastriatal brain regions

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Woodward, Neil D., Cowan, Ronald L., Park, Sohee, Ansari, M. Sib, Baldwin, Ronald M., Li, Rui, Doop, Mikisha, Kessler, Robert M. +1 more·2011·American Journal of Psychiatry

Abstract

OBJECTIVE: Schizotypal personality traits are associated with schizophrenia spectrum disorders, and individuals with schizophrenia spectrum disorders demonstrate increased dopamine transmission in the striatum. The authors sought to determine whether individual differences in normal variation in schizotypal traits are correlated with dopamine transmission in the striatum and in extrastriatal brain regions. METHOD: Sixty-three healthy volunteers with no history of psychiatric illness completed the Schizotypal Personality Questionnaire and underwent positron emission tomography imaging with [(18)F]fallypride at baseline and after administration of oral d-amphetamine (0.43 mg/kg). Dopamine release, quantified by subtracting each participant's d-amphetamine scan from his or her baseline scan, was correlated with Schizotypal Personality Questionnaire total and factor scores using region-of-interest and voxel-wise analyses. RESULTS: Dopamine release in the striatum was positively correlated with overall schizotypal traits. The association was especially robust in the associative subdivision of the striatum. Voxel-wise analyses identified additional correlations between dopamine release and schizotypal traits in the left middle frontal gyrus and left supramarginal gyrus. Exploratory analyses of Schizotypal Personality Questionnaire factor scores revealed correlations between dopamine release and disorganized schizotypal traits in the striatum, thalamus, medial prefrontal cortex, temporal lobe, insula, and inferior frontal cortex. CONCLUSIONS: The association between dopamine signaling and psychosis phenotypes extends to individual differences in normal variation in schizotypal traits and involves dopamine transmission in both striatal and extrastriatal brain regions. Amphetamine-induced dopamine release may be a useful endophenotype for investigating the genetic basis of schizophrenia spectrum disorders.

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  1. [22]First MB Spitzer RL Gibbon M Williams JBW Structured Clinical Interview for DSM-IV Axis I Disorders, Clinical Version (SCID-CV) 1996 Washington, D.C American Psychiatric Press Inc

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Authors
Woodward, N. D., Cowan, R. L., Park, S., Ansari, M. S., Baldwin, R. M., Li, R., Doop, M., Kessler, R. M., & Zald, D. H.
Affiliations
Vanderbilt University (US)
Venue
American Journal of Psychiatry
Published
2011-04
Volume
168
Issue
4
Pages
418-426
ISSN
  • 0002-953X (ISSN-L)
  • 1535-7228
OpenAlex
W2169802681
Cited by
90
References
48
Citations by year
2026: 4 · 2025: 4 · 2024: 1 · 2023: 6 · 2022: 3 · 2021: 5 · 2020: 5 · 2019: 6 · 2018: 6 · 2017: 5 · 2016: 4 · 2015: 10 · 2014: 10 · 2013: 8 · 2012: 11
FWCI
4.58
Type
journal article
Language
en
Open access
Locations
  • American Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (R01 MH6089 8 -03)
  • National Institute on Drug Abuse (R01DA019670)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
schizotypal personality traits, dopamine release, amphetamine challenge, striatum, endophenotypes, schizophrenia spectrum disorders, individual differences, associative striatum, frontal cortex, thalamus, medial prefrontal cortex
MeSH terms
Adult, Amphetamine, Brain, Corpus Striatum, Dopamine, Female, Frontal Lobe, Humans, Individuality, Male, Personality Inventory, Schizotypal Personality Disorder, Temporal Lobe, Thalamus, Single-Blind Method, Positron-Emission Tomography, Young Adult

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