During young adulthood, drinking dramatically increases, with binge-level drinking peaking at age 22 and nearly half of individuals reporting binge-level alcohol use2. Frequent binge alcohol use during the protracted neuromaturation spanning into the mid-20s may result in greater brain and cognitive effects than similar alcohol use in later adulthood. In response to RFA-AA-17-003, this application proposes a Research Project Site of the National Consortium on Alcohol and Neurodevelopment in Adolescence second phase (NCANDA-2) to determine the predictors and effects of heavy adolescent alcohol use in adolescence and young adulthood. To achieve this, the UCSD site of NCANDA-2 will continue to follow a cohort of 211 San Diego-area (n=831 across all 5 sites) participants (ages 12-21 at baseline visit) to acquire the necessary data to advance our understanding of adolescent development and the effects of alcohol use during adolescence on the adult brain. NCANDA-2 will use multimodal neuroimaging, cognitive testing, behavioral assessment, biospecimen collection, and multimodal assessments in the natural environment. The examination of alcohol consequences will focus on structural and functional maturation of brain areas that actively develop during adolescence and young adulthood, are involved in psychological regulation, respond to rewards, and appear vulnerable to neurotoxic effects of alcohol. In addition, the UCSD site will collaborate with the Duke and OHSU sites to study recovery of these abnormalities. Specifically, we will examine the degree to which targeted heavy drinking related neurocognitive and brain integrity deficits remit over 4 weeks of monitored abstinence. UCSD will also collaborate with the SRI site to collect the Stroop task in the fMRI environment to evaluate changes in the cognitive control system for youth who increase drinking versus those who do not. Sex differences in development, alcohol use patterns and history, impact of alcohol use on the brain, and sex-differentiating psychosocial factors (e.g., depression symptoms) will be considered in analyses. With the additional longitudinal data provided by this renewal, we will determine the effects of alcohol exposure on the developmental trajectory of the adolescent human brain, and identify preexisting psychobiological vulnerabilities and resiliencies that may alter adolescents? and young adults? risk for alcohol or other substance use disorder and other mental health and developmental outcomes.

Public Health Relevance

The additional longitudinal data provided by this renewal, NCANDA-2, will determine the extent to which structural and functional deficits in neuromaturation precede, are caused by, or are exacerbated by variations in adolescent alcohol use.

Agency
National Institute of Health (NIH)
Institute
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Type
Research Project--Cooperative Agreements (U01)
Project #
2U01AA021692-06
Application #
9384846
Study Section
Special Emphasis Panel (ZAA1)
Program Officer
Matochik, John A
Project Start
2012-09-01
Project End
2022-06-30
Budget Start
2017-07-01
Budget End
2018-06-30
Support Year
6
Fiscal Year
2017
Total Cost
Indirect Cost
Name
University of California, San Diego
Department
Psychiatry
Type
Schools of Medicine
DUNS #
804355790
City
La Jolla
State
CA
Country
United States
Zip Code
92093
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Jacobus, Joanna; Squeglia, Lindsay M; Escobar, Silvia et al. (2017) Changes in marijuana use symptoms and emotional functioning over 28-days of monitored abstinence in adolescent marijuana users. Psychopharmacology (Berl) 234:3431-3442
Sullivan, Edith V; Brumback, Ty; Tapert, Susan F et al. (2017) Effects of prior testing lasting a full year in NCANDA adolescents: Contributions from age, sex, socioeconomic status, ethnicity, site, family history of alcohol or drug abuse, and baseline performance. Dev Cogn Neurosci 24:72-83
Squeglia, Lindsay M; Ball, Tali M; Jacobus, Joanna et al. (2017) Neural Predictors of Initiating Alcohol Use During Adolescence. Am J Psychiatry 174:172-185

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