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Carey CE, Knodt AR, Conley ED, et al. Reward-related ventral striatum activity links polygenic risk for attention-deficit/hyperactivity disorder to problematic alcohol use in young adulthood. Biol Psychiatry Cogn Neurosci Neuroimaging. 2017;2(2):180-187doi: 10.1016/j.bpsc.2016.10.003.
Carey, C. E., Knodt, A. R., Conley, E. D., Hariri, A. R., & Bogdan, R. (2017). Reward-related ventral striatum activity links polygenic risk for attention-deficit/hyperactivity disorder to problematic alcohol use in young adulthood. Biological psychiatry. Cognitive neuroscience and neuroimaging, 2(2), 180-187. https://doi.org/10.1016/j.bpsc.2016.10.003
Carey, Caitlin E, et al. "Reward-related ventral striatum activity links polygenic risk for attention-deficit/hyperactivity disorder to problematic alcohol use in young adulthood." Biological psychiatry. Cognitive neuroscience and neuroimaging vol. 2,2 (2017): 180-187. doi: https://doi.org/10.1016/j.bpsc.2016.10.003
Carey CE, Knodt AR, Conley ED, Hariri AR, Bogdan R. Reward-related ventral striatum activity links polygenic risk for attention-deficit/hyperactivity disorder to problematic alcohol use in young adulthood. Biol Psychiatry Cogn Neurosci Neuroimaging. 2017 Mar;2(2):180-187. doi: 10.1016/j.bpsc.2016.10.003. PMID: 28825048; PMCID: PMC5560771.
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Biol Psychiatry Cogn Neurosci Neuroimaging. 2017 Mar;2(2):180-187. doi: 10.1016/j.bpsc.2016.10.003.

Reward-related ventral striatum activity links polygenic risk for attention-deficit/hyperactivity disorder to problematic alcohol use in young adulthood.

Biological psychiatry. Cognitive neuroscience and neuroimaging

Caitlin E Carey, Annchen R Knodt, Emily Drabant Conley, Ahmad R Hariri, Ryan Bogdan

Affiliations

  1. Washington University in St. Louis, Department of Psychological and Brain Sciences, St. Louis, Missouri, USA.
  2. Duke University, Department of Psychology and Neuroscience, Durham, NC, USA.
  3. 23andMe, Mountain View, CA, USA.

PMID: 28825048 PMCID: PMC5560771 DOI: 10.1016/j.bpsc.2016.10.003

Abstract

BACKGROUND: Problematic alcohol use in adolescence and adulthood is a common and often debilitating correlate of childhood attention-deficit/hyperactivity disorder (ADHD). Converging evidence suggests that ADHD and problematic alcohol use share a common additive genetic basis, which may be mechanistically related to reward-related brain function. In the current study, we examined whether polygenic risk for childhood ADHD is linked to problematic alcohol use in young adulthood through alterations in reward-related activity of the ventral striatum, a neural hub supporting appetitive behaviors and reinforcement learning.

METHODS: Genomic, neuroimaging, and self-report data were available for 404 non-Hispanic European-American participants who completed the ongoing Duke Neurogenetics Study. Polygenic risk scores for childhood ADHD were calculated based on a genome-wide association study meta-analysis conducted by the Psychiatric Genomics Consortium and tested for association with reward-related ventral striatum activity, measured using a number-guessing functional magnetic resonance imaging paradigm, and self-reported problematic alcohol use. A mediational model tested whether ventral striatum activity indirectly links polygenic risk for ADHD to problematic alcohol use.

RESULTS: Despite having no main effect on problematic alcohol use, polygenic risk for childhood ADHD was indirectly associated with problematic alcohol use through increased reward-related ventral striatum activity.

CONCLUSIONS: Individual differences in reward-related brain function may, at least in part, mechanistically link polygenic risk for childhood ADHD to problematic alcohol use.

Keywords: ADHD; alcohol; fMRI; polygenic; reward; ventral striatum

Conflict of interest statement

FINANCIAL DISCLOSURES Emily Drabant Conley works for the commercial entity 23andMe, the company that genotyped the DNS samples through research collaboration (no payment). All other authors report no

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