Status
Conditions
About
Background:
Objective:
Eligibility:
Design:
Full description
Objective:
The primary objective of the study is to evaluate the role of early life stress (ELS), alcohol dependence (AD), and their interaction in psychophysiology and neural mechanisms of fear conditioning and extinction.
The main outcome of interest is fear extinction, as measured by laboratory-based and fMRI paradigms. Secondary objectives of the study include: (1) explore the impact of early life stress on behavioral and endocrine response to challenge procedures among individuals with AD; (2) explore differences in reward processing, emotion processing, and neural response to alcohol beverages as measured by fMRI as a function of AD and ELS; and (3) examine the relationship between fear extinction and clinical outcomes in our patient sample.
Study Population:
The study sample includes four groups: 1) treatment-seeking individuals with alcohol dependence (AD) and ELS exposure; 2) treatment seeking individuals with alcohol dependence without ELS exposure; 3) healthy social drinkers without alcohol use disorders (AUD) but with ELS exposure; and 4) healthy social drinkers without AUD and without ELS exposure. Target accrual for each of these groups is 25.
Design:
All participants will be evaluated for fear conditioning and extinction using two separate paradigms: an out-of-the scanner shock conditioning extinction procedure that utilizes acoustic startle, and a shock conditioning extinction procedure combined with fMR imaging that utilizes galvanic skin response. In addition, the two alcohol dependent groups will be evaluated for several biomarkers including a guided imagery procedure designed to induce stress and/or craving for alcohol, and an assessment of hypothalamic-pituitary-adrenal (HPA) axis function.
Outcome Measures:
Primary outcome measures include fear-potentiated startle responses and galvanic skin responses; and neural BOLD fMRI responses during presentation of fear associated stimuli. Secondary and exploratory measures in alcohol dependent subjects include measures of distress and craving for alcohol in response to guided imagery scripts; neuroendocrine stress responses and clinical outcomes (alcohol consumption and self-reported anxiety and mood symptoms).
Sex
Ages
Volunteers
Inclusion and exclusion criteria
Inclusion criteria for AD+/ELS+ group:
Inclusion criteria for AD+/ELS- group:
Inclusion criteria for AD-/ELS+ group:
Inclusion criteria for AD-/ELS- group:
EXCLUSION CRITERIA:
Exclusion criteria for AD+/ELS+ group:
Exclusion criteria for AD+/ELS- group:
Score above minimal for one or more categories of ELS as measured by the CTQ
-Left-handedness
Exclusion criteria for AD-/ELS+ group:
Exclusion criteria for AD-/ELS- group:
Loading...
Data sourced from clinicaltrials.gov
Clinical trials
Research sites
Resources
Legal