Reduced dorsal striatal gray matter volume predicts implicit suicidal ideation in adolescents
Open accessAbstract
Suicidal ideation (SI), a potent risk factor for suicide attempts, increases in adolescence. While alterations in dopaminergic functioning have been implicated in suicidal acts-particularly in adults-we do not know whether morphological alterations in dopamine-rich regions of the brain, such as the striatum, are vulnerability factors for the emergence of SI in adolescents. At baseline, a community sample of 152 adolescents (89 female; mean age: 11.41 ± 1.01 years) completed a magnetic resonance imaging (MRI) scan that was used to estimate gray matter volumes (GMVs) of three striatal structures: caudate, nucleus accumbens and putamen. At a 24 month follow-up session, participants completed a self-report measure of SI frequency [Suicidal Ideation Questionnaire (SIQ)] and the death version of the Implicit Association Test (IAT). Robust linear regression models were conducted to predict SIQ and IAT scores from striatal GMV. Bilateral putamen and left caudate GMV significantly predicted IAT scores (all Ps < 0.03). No other associations were significant (all Ps > 0.05). Our finding of reduced dorsal striatal GMV predicting implicit SI may indicate that downstream dopaminergic dysfunction is implicated in the development of overt suicidal behaviors. Self-reported SI was not associated with striatal GMV, suggesting that biological correlates of suicide risk may correlate specifically with objective measurements of SI in adolescents.
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Putamen volume is prospectively associated with implicit but not explicit suicide ideation.
“Additionally, putamen volume is prospectively associated with implicit, but not explicit, suicide ideation (58).”
From Neural correlates associated with suicide and nonsuicidal self-injury in youth (2021) · cites this paper as [58]
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Self-citation
- Authors
- Ho, T. C., Cichocki, A. C., Gifuni, A. J., Catalina Camacho, M., Ordaz, S. J., Singh, M. K., & Gotlib, I. H.
- Affiliations
- Stanford Medicine (US)
- Stanford University (US)
- Douglas Mental Health University Institute (CA)
- University of Pittsburgh, Center for Neuroscience, Pittsburgh, PA, USA
- University of Pittsburgh (US)
- Corresponding author
- Ho, Tiffany C
- Venue
- Social Cognitive and Affective Neuroscience
- Publisher
- Oxford University Press (OUP)
- Published
- 2018-09-25
- Volume
- 13
- Issue
- 11
- Pages
- 1215-1224
- ISSN
- 1749-5016 (ISSN-L)
- 1749-5024
- PMC
- PMC6234322
- OpenAlex
- W2894163483
- Cited by
- 48
- References
- 76
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 5 · 2023: 6 · 2022: 13 · 2021: 7 · 2020: 6 · 2019: 1
- FWCI
- 4.10
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Social Cognitive and Affective Neuroscience (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- eScholarship (California Digital Library) (submittedVersion, cc-by-nc)
- Funders
- American Foundation for Suicide Prevention (PDF-1-064-13)
- National Institute of Mental Health (R37MH101495, K01MH106805)
- Klingenstein Third Generation Foundation
- Stanford University
- Brain Behavior Foundation
- Topics
- Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Keywords
- suicidal ideation, adolescents, dorsal striatum, gray matter volume, putamen, caudate nucleus, nucleus accumbens, dopaminergic dysfunction, suicide risk, brain structure
- MeSH terms
- Adolescent, Caudate Nucleus, Child, Corpus Striatum, Female, Humans, Longitudinal Studies, Magnetic Resonance Imaging, Male, Neuropsychological Tests, Nucleus Accumbens, Predictive Value of Tests, Putamen, Socioeconomic Factors, Risk Assessment, Suicidal Ideation, Dopaminergic Neurons, Gray Matter
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