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• W2013164704 abstract "Chronic alcohol abuse is a ubiquitous health and societal problem, with a growing prevalence in the older population. Alcoholism is a source of substantial deterioration in brain tissue and has been consistently observed in vivo and postmortem in white matter. To quantify the potential compounded effect of age and alcoholism, we used conventional structural MRI and diffusion tensor imaging (DTI) to examine the macrostructural and microstructural integrity of the corpus callosum, one of the most prominent white matter structures of the brain, in 131 adults, age 27-75 years. Compared with the 74 controls, the 40 alcoholic men and 17 alcoholic women, who were abstinent from alcohol for an average of 3 months, showed similar patterns and extents of callosal shrinkage, which was greatest in the genu and body and less prominent in the splenium. Microstructural integrity was measured with DTI as fractional anisotropy, an index of intravoxel orientational coherence of white matter fibers, and bulk mean diffusivity, an index of the amount of intravoxel water motility. The macrostructural shrinkage was accompanied by abnormalities in anisotropy and diffusivity of the microstructural environment of these callosal regions, indicative of disruption of structural constituents of local brain white matter. Correlational analyses revealed an age-alcohol interaction, where older alcoholics had smaller genu and splenium and higher diffusivity in these regions than younger alcoholics. Significant correlations between regional MRI and DTI measures and performance on working memory, visuospatial ability, and gait and balance provided evidence for the functional ramifications of the callosal abnormalities in the alcoholics. Thus, despite abstinence from alcohol, the interaction of age and recent alcoholism history exerted a compounded untoward effect on callosal macrostructure and microstructure." @default.
• W2013164704 created "2016-06-24" @default.
• W2013164704 creator A5004843559 @default.
• W2013164704 creator A5021214192 @default.
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• W2013164704 date "2006-07-01" @default.
• W2013164704 modified "2023-10-13" @default.
• W2013164704 title "Dysmorphology and microstructural degradation of the corpus callosum: Interaction of age and alcoholism" @default.
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• W2013164704 doi "https://doi.org/10.1016/j.neurobiolaging.2005.05.007" @default.
• W2013164704 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15964101" @default.
• W2013164704 hasPublicationYear "2006" @default.
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