Alcoholism
Conditions
Keywords
opiod receptor modulator nalmefene, cue-reactivity, fMRI, resting-state networks
Brief summary
The aim of this study is to use functional Magnetic Resonance Imaging (fMRI) to measure neural reactivity to alcohol-related and emotional cues in alcohol dependent subjects following a single dose of the opioid receptor modulator nalmefene. The study will be done in a cross over design with nalmefene versus placebo.
Detailed description
All subjects will undergo a battery of minimal risk procedures during each study visit; filling out questionnaires, performing agreed behavioral tasks, scanning procedures including two functional MRI (fMRI) scans as well as structural MRI. The fMRI will be obtained in non-abstinent participants with breath alcohol concentrations not larger than \> 0.3 ‰ and withdrawal severity not more than 4 on the clinical institute withdrawal assessment for alcohol (CIWA-Ar) scale. Alcohol consumption will be assessed with the Form90 interview. Severity of alcohol dependence will be examined with the Alcohol Dependence Scale (ADS). Drinking situations will be assessed with the Inventory of Drinking Situations (IDS). Trait aspects of craving for alcohol will be measured with the Obsessive Compulsive Drinking Scale (OCDS). To examine state and trait anxiety the State-Trait Anxiety Inventory (STAI) will be used. Depressive symptoms will be measured with the Beck Depression Inventory (BDI) and the State-Trait Depression Scales (STDS). Nicotine consumption will be assessed with the Fagerström Test for Nicotine Dependence. The following scales will be administered before and after each fMRI scanning: The Alcohol Craving Questionnaire (ACQ), the Alcohol Urge Questionaire (AUQ) and visual analogue scales for craving assessment. Participants will undergo two fMRI scanning sessions at intervals of one week: one 2 h after administration of nalmefene and one 2 h after administration of placebo, carried out in a randomized order. MRI examinations include * a cue-reactivity task; * an emotional faces task; * resting-state fMRI; * structural MRI; * including preparation, instructions and breaks
Interventions
DRUGNalmefene
18mg of Nalmefen will be administered orally
DRUGPlacebo
Placebo tablet
Sponsors
Lundbeck GmbH, Ericusspitze 2, 20457 Hamburg
Central Institute of Mental Health, Mannheim
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
TRIPLE (Subject, Caregiver, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* severe alcohol use disorder according to DSM 5 and heavy drinking: alcohol consumption \>=60g (men) and \>=40g (women) (minimum of 5 days / week) * right-handedness * normal or corrected to normal vision * signed written informed consent
Exclusion criteria
valid at the time of MRI investigation: * psychotropic medication within the last 14 days * severe withdrawal symptoms (CIWA-Ar \> 4; Sullivan et al. 1989) * intoxication (breath alcohol concentration \> 0.3 ‰) * common
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Difference in cue-induced brain activation between two fMRI scans (randomization to an intake of nalmefene (18 mg) or placebo). | Primary outcome measures will be assessed on day 2 and day3 after fMRI scan, data collection will take up to 12 months | This difference will be extracted from whole-brain contrast images in the VS and DS using the percentage of activated voxels in these regions of interest (ROI). |
Countries
Germany
Outcome results
None listed