Alcoholism Clinical Trial
Official title:
Neural Substrate of Approach-Avoidance Conflict
Verified date | January 2021 |
Source | National Institutes of Health Clinical Center (CC) |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
Background: - People who are dependent on alcohol drink even when they know something bad might happen. Researchers want to learn more about why they do this. Objectives: - To study brain response when a person plays a game in different threat conditions. Eligibility: - Healthy right-handed adult heavy drinkers age 21 60 - Healthy right-handed adult light drinkers age 21 60 Design: - Participants will be screened with medical history, physical exam, and blood and urine tests. They will have an EKG and psychiatric interview. - Participants will have one or two clinic visits. - Participants will be asked about their alcohol drinking. - They will choose a snack and alcoholic beverage that they must drink in 5 minutes. After their breath alcohol content (BrAC) is zero, they will play a game in the MRI scanner. - The scanner is a metal cylinder that takes pictures of the brain. Participants lie on a table that slides in and out of the cylinder. They will be in it for about 90 minutes, lying still for up to 20 minutes. - During the MRI, participants will play a simple computer game to earn food or drink points under different threats of electric shock. Points can be exchanged for food or alcohol after the game. Sometimes, participants will receive a mild electric shock through a metal disk on the wrist. Electric shocks will only happen if the participant tries to earn a reward point. - After the MRI, participants use their points for another drink and snack. They will stay at the clinic until their BrAC is low, usually within 3 hours. Participants cannot drive themselves home. - Participants will have a follow-up phone call the next day.
Status | Completed |
Enrollment | 62 |
Est. completion date | September 1, 2020 |
Est. primary completion date | September 1, 2020 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 21 Years to 60 Years |
Eligibility | - Inclusion criteria (Light Drinkers): 1. In good health as determined by medical history, physical exam, ECG, and lab tests; 2. Between 21 and 60 years of age; 3. Currently consuming on average 1-10 drinks per week for females and on average 1-14 drinks per week for males, (averaging over the 90 days recorded in the Alcohol Timeline Followback); 4. Right handed. Exclusion criteria (Light Drinkers): 1. Have liver function tests (AST, ALT, GGT, ALP) 3-times the upper limit of normal (ULN); or have Total Bilirubin above 1.5 ULN and Albumin below 3.5 g/dl; 2. Have fulfilled DSM-IV-TR or DSM-5 criteria for alcohol dependence or alcohol use disorder (past or current) at any time, or other current substance dependence or substance use disorder (excluding nicotine); 3. Report having received any medication to treat a psychiatric disorder within the past year, have a past or present diagnosis of a psychotic or bipolar disorder, or have ever had a head injury requiring hospitalization; 4. Weigh over 330 pounds; 5. Are pregnant, as determined by a positive pregnancy test, or breast feeding; Report to have a facial, body, and limb flushing response to the consumption of alcohol, as determined by the Alcohol Flushing Questionnaire; 6. Report to have a "facial flushing" response to the consumption of alcohol 7. Have ferromagnetic objects in their bodies which might be adversely affected by MRI including implanted pacemakers, medication pumps, aneurysm clips; metallic prostheses (including metal pins and rods, heart valves or cochlear implants, shrapnel fragments, permanent eye liner or small metal fragments in the eye that welders and other metal works may have - any doubt about presence of these objects will result in exclusion from this study), or if candidates are uncomfortable in small closed spaces (have claustrophobia), or cannot lie comfortably on their back for up to one hour; 8. Medical illnesses (such as diabetes or stage 2 hypertension systolic blood pressure greater than or equal to 160 mm Hg or diastolic blood pressure greater than or equal to 100 mm Hg) or neurological illnesses (carpal tunnel syndrome; migraine headaches; seizure disorders) likely to interfere with the study; 9. Endorse more than 3 symptoms on the Yale Food Addiction Scale; 10. Have colorblindness. Inclusion criteria (Heavy Drinkers): 1. In good health as determined by medical history, physical exam, ECG, and lab tests; 2. Between 21 and 60 years of age; 3. Currently consuming on average 15+ drinks per week for females and on average 20+ drinks per week for males, as determined by the 90-day Alcohol Timeline Followback, or fulfilled DSM-IV-TR criteria for current alcohol dependence or DSM-5 criteria for current alcohol use disorder; 4. Right-handed; 5. Clinical Institute Withdrawal Assessment Alcohol Revised (CIWA-AR) score less than 8; 6. Not seeking treatment for their alcohol consumption. Exclusion criteria (Heavy Drinkers): All exclusion criteria for Light Drinkers except for Light Drinker exclusion criterion number two. For Heavy Drinkers this exclusion criterion will read: Have fulfilled DSM-IV-TR or DSM-5 criteria for any current substance dependence or current substance use disorder (excluding alcohol or nicotine). |
Country | Name | City | State |
---|---|---|---|
United States | National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland |
Lead Sponsor | Collaborator |
---|---|
National Institute on Alcohol Abuse and Alcoholism (NIAAA) |
United States,
Adolphs R, Tranel D, Damasio H, Damasio AR. Fear and the human amygdala. J Neurosci. 1995 Sep;15(9):5879-91. — View Citation
Alvarez RP, Biggs A, Chen G, Pine DS, Grillon C. Contextual fear conditioning in humans: cortical-hippocampal and amygdala contributions. J Neurosci. 2008 Jun 11;28(24):6211-9. doi: 10.1523/JNEUROSCI.1246-08.2008. — View Citation
Aupperle RL, Paulus MP. Neural systems underlying approach and avoidance in anxiety disorders. Dialogues Clin Neurosci. 2010;12(4):517-31. Review. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | fMRI BOLD signal differences between heavy and light drinkers during reward and threat task. | fMRI and behavioral differences between light drinkers and heavy drinkers. | Mainly the fMRI and behavioral data collected at the time of enrollment |
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