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Clinical Trial Summary

Alcohol use disorders (AUDs) affect up to 60% of individuals with bipolar disorder during their lifetime and is associated with worse illness outcomes, yet few studies have been performed to clarify the causes of this comorbidity. Understanding biological risk factors that associate with and predict the development of AUDs in bipolar disorder could inform interventions and prevention efforts to reduce the rate of this comorbidity and improve outcomes of both disorders. Identifying predictors of risk requires longitudinal studies in bipolar disorder aimed at capturing the mechanisms leading to the emergence of AUDs. Previous work in AUDs suggest that subjective responses to alcohol and stress-related mechanisms may contribute to the development of AUDs. In bipolar disorder, altered developmental trajectory of critical ventral prefrontal networks that modulate mood and reward processing may alter responses to alcohol and stressors; consequently, the disruption in typical neurodevelopment may be an underlying factor for the high rates of comorbidity. No longitudinal data exist investigating if this developmental hypothesis is correct. To address this gap, the investigators will use a multimodal neuroimaging approach, modeling structural and functional neural trajectories of corticolimbic networks over young adulthood, incorporating alcohol administration procedures, clinical phenotyping, and investigating effects of acute stress exposure and early life stress. Research aims are to identify biological risk factors-i.e., changes in subjective response to alcohol and associated neural trajectories-that are associated with the development of alcohol misuse and symptoms of AUDs over a two-year longitudinal period in young adults with bipolar disorder and typical developing young adults. Longitudinal data will be collected on 160 young adults (50% with bipolar disorder, 50% female; aged 21-26). This study is a natural extension of the PI's K01 award. How acute exposure to stress and childhood maltreatment affects subjective response to alcohol and risk for prospective alcohol misuse and symptoms of AUDs will be investigated. The investigators will test our hypothesis that developmental differences in bipolar disorder versus typical developing individuals disrupt corticolimbic networks during young adulthood, increase sensitivity to stress, and lead to changes in subjective response to alcohol and placebo response increasing risk for developing AUDs.


Clinical Trial Description

The PI is currently investigating subjective response to alcohol in bipolar disorder and typical developing young adults (n=60; 50% with bipolar disorder) using placebo-controlled alcohol administration with baseline structural/functional MRI assessments collected with her K01. The proposed work will extend this active study to enroll 100 new young adults (50% with bipolar disorder) to complete baseline clinical, MRI, and placebo-controlled alcohol administration sessions. The PI's K01 is focused on investigating differences in subjective and neural response to alcohol between bipolar disorder and typical developing young adults. The proposed study will focus on investigating changes in subjective response to alcohol, placebo response, and relations with neural trajectories, the role(s) of stress, and prediction of alcohol problems over a two-year period. Longitudinal follow-up (clinical, detailed assessment of alcohol use, and MRI) will occur on average 1- and 2-years following enrollment. Participants enrolled on the PI's K01 will be brought back for longitudinal assessments to reach N=80 per group with longitudinal data (50% female; aged 21-26)]. At 2-year follow-up, placebo-controlled alcohol administration sessions will be repeated to test if sensitivity to alcohol changes over time-and if change in sensitivity to alcohol is associated with progressive neural changes in corticolimbic brain networks during young adulthood-and associations with alcohol use and symptoms of AUDs over time, and interactions with bipolar disorder. Changes in placebo-response and if changes are predictive of increased alcohol use and symptoms of AUDs will also be modeled. At one-year follow-up, a subset of participants will be invited to complete a psychosocial stress and neutral fMRI task on separate days (counter balanced; n=40 per group). Participants will immediately complete an alcohol session following the fMRI tasks and stress-induced changes in subjective response to alcohol and interactions with group will be modeled. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05838274
Study type Interventional
Source University of Texas at Austin
Contact Research Coordinator
Phone 5124955198
Email behavioral.neuroimaging@austin.utexas.edu
Status Recruiting
Phase N/A
Start date July 11, 2023
Completion date March 31, 2028

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