Neurobiological Correlates and Predictors of Two Distinct Personality Trait Pathways to Escalated Alcohol Use
Neurobiological Correlates and Predictors of Two Distinct Personality Trait Pathways to Escalated Alcohol Use
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2018
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EBioMedicine ; 27 (2018). - pp. 86-93. - ISSN 2352-3964. - eISSN 2352-3964
Abstract
Background
The delineation of the behavioral neurobiological mechanisms underlying the heterogeneous pathways for alcohol use disorders (AUDs) is ostensibly imperative for the development of more cost-effective treatments predicated on better understanding of this complex psychopathology.
Methods
1) Forty-eight high anxiety sensitive (HAS) and high sensation seeking (HSS) psychopathology-free emerging adults (mean (SD) age: 20.4 (1.9) years) completed a Face Emotion Processing Task and a social stress paradigm (Montreal Imaging Stress Task) during functional magnetic resonance imaging sessions with and without alcohol ingestion (1 ml/kg of 95% USP alcohol, p.o.). Drug and alcohol use was reassessed during follow-up interviews 2–3 years later.
Outcomes
The effects of alcohol (versus placebo) ingestion depended upon the task and risk group. In response to negative (versus neutral) faces, alcohol diminished amygdala (AMYG) activations in HAS but not HSS subjects. In response to psychosocial evaluative stress, alcohol enhanced activations of the medial orbitofrontal cortex (mOFC), perigenual anterior cingulate cortex, and nucleus accumbens in HAS male subjects (HASMS), but decreased mOFC activity in HSS male subjects (HSSMS). At follow-up, a greater alcohol versus placebo differential for threat-related AMYG activations predicted escalating drinking and/or illicit drug use among HAS but not HSS participants, whereas a greater differential for mOFC activations during acute social stress predicted escalating substance use among HSS but not HAS participants.
Interpretation
This double dissociation provides evidence of distinct neurobiological profiles in a priori identified personality trait-based risk groups for AUDs, and links these signatures to clinically relevant substance use outcomes at follow-up. AUD subtypes might benefit from motivationally and personality-specific ameliorative and preventative interventions.
The delineation of the behavioral neurobiological mechanisms underlying the heterogeneous pathways for alcohol use disorders (AUDs) is ostensibly imperative for the development of more cost-effective treatments predicated on better understanding of this complex psychopathology.
Methods
1) Forty-eight high anxiety sensitive (HAS) and high sensation seeking (HSS) psychopathology-free emerging adults (mean (SD) age: 20.4 (1.9) years) completed a Face Emotion Processing Task and a social stress paradigm (Montreal Imaging Stress Task) during functional magnetic resonance imaging sessions with and without alcohol ingestion (1 ml/kg of 95% USP alcohol, p.o.). Drug and alcohol use was reassessed during follow-up interviews 2–3 years later.
Outcomes
The effects of alcohol (versus placebo) ingestion depended upon the task and risk group. In response to negative (versus neutral) faces, alcohol diminished amygdala (AMYG) activations in HAS but not HSS subjects. In response to psychosocial evaluative stress, alcohol enhanced activations of the medial orbitofrontal cortex (mOFC), perigenual anterior cingulate cortex, and nucleus accumbens in HAS male subjects (HASMS), but decreased mOFC activity in HSS male subjects (HSSMS). At follow-up, a greater alcohol versus placebo differential for threat-related AMYG activations predicted escalating drinking and/or illicit drug use among HAS but not HSS participants, whereas a greater differential for mOFC activations during acute social stress predicted escalating substance use among HSS but not HAS participants.
Interpretation
This double dissociation provides evidence of distinct neurobiological profiles in a priori identified personality trait-based risk groups for AUDs, and links these signatures to clinically relevant substance use outcomes at follow-up. AUD subtypes might benefit from motivationally and personality-specific ameliorative and preventative interventions.
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150 Psychology
Keywords
Alcohol; fMRI; Sensation seeking; Anxiety sensitivity; Amygdala; Orbitofrontal cortex
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SHAKRA, Malak Abu, Marco LEYTON, Hussein MOGHNIEH, Jens C. PRUESSNER, Alain DAGHER, Robert PIHL, 2018. Neurobiological Correlates and Predictors of Two Distinct Personality Trait Pathways to Escalated Alcohol Use. In: EBioMedicine. 27, pp. 86-93. ISSN 2352-3964. eISSN 2352-3964. Available under: doi: 10.1016/j.ebiom.2017.11.025BibTex
@article{Shakra2018-01Neuro-41152,
year={2018},
doi={10.1016/j.ebiom.2017.11.025},
title={Neurobiological Correlates and Predictors of Two Distinct Personality Trait Pathways to Escalated Alcohol Use},
volume={27},
issn={2352-3964},
journal={EBioMedicine},
pages={86--93},
author={Shakra, Malak Abu and Leyton, Marco and Moghnieh, Hussein and Pruessner, Jens C. and Dagher, Alain and Pihl, Robert}
}
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