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Published on: February 6, 2019
Deformation-based morphometry of brain changes in alcohol dependence and abstinence
Valerie A Cardenas1, Colin Studholme, Stefan Gazdzinski
1Center for the Imaging of Neurodegenerative Disease, San Francisco VA Medical Center, Department of Radiology, University of California, San Francisco, NCIRE, CA 94121, USA. valerie.cardenas-nicolson@ucsf.edu
Neuroimage
|November 28, 2006
Summary
Brain atrophy from chronic alcohol use can reverse with abstinence. Recovering alcoholics showed significant brain tissue volume gains, particularly in frontal and parietal lobes, after quitting drinking.
Area of Science:
- Neuroscience
- Radiology
- Addiction Medicine
Background:
- Chronic alcohol consumption is known to cause brain atrophy.
- This atrophy affects various brain regions, including frontal and temporal lobes.
- Previous research suggests partial reversibility of brain damage after alcohol cessation.
Purpose of the Study:
- To investigate the extent and location of brain tissue recovery in recovering alcoholics after a period of abstinence.
- To compare brain volume changes between abstinent individuals and light drinkers.
- To explore the relationship between baseline brain structure, gray/white matter volume, and the degree of recovery.
Main Methods:
- Magnetic Resonance Imaging (MRI) was used to study recovering alcoholics (RA) and light drinkers (LD).
- Nonlinear registration techniques created deformation maps to analyze structural changes and longitudinal size changes.
- ANCOVA and regression methods assessed group differences and relationships between brain changes and drinking severity/atrophy.
Main Results:
- Recovering alcoholics showed significant frontal and temporal lobe atrophy at baseline.
- Abstainers demonstrated significantly faster tissue volume recovery than light drinkers in parietal and frontal lobes.
- Significant recovery was observed in temporal lobes, thalamus, brainstem, cerebellum, and other regions in abstainers compared to relapsers.
- Baseline gray matter volume was a better predictor of recovery than white matter volume.
Conclusions:
- Abstinence from alcohol leads to significant, measurable brain tissue volume recovery.
- Recovery is most pronounced in brain regions affected by heavy drinking, such as the fronto-ponto-cerebellar circuit.
- Maintaining long-term sobriety is associated with continued brain structural improvements.
