Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/199959
Type: Artigo de periódico
Title: Neocortical Atrophy In Machado-joseph Disease: A Longitudinal Neuroimaging Study.
Author: D'Abreu, Anelyssa
França, Marcondes C
Yasuda, Clarissa L
Campos, Bruno A G
Lopes-Cendes, Iscia
Cendes, Fernando
Abstract: Previous imaging studies in the Machado-Joseph disease (MJD/SCA3) have mostly concentrated on the cerebellum and brainstem. Our goal was to perform a whole brain longitudinal evaluation. We included 45 patients and 51 controls, who underwent two brain magnetic resonance imaging and magnetic resonance spectroscopy (mean interval of 12.5 ± 1.5 months). We used voxel-based morphometry (VBM) and the MarsBar analysis toolbox to extract grey matter density (GMD) values from regions of interest. We used a linear regression model and a general linear model to correlate GMD with clinical markers, and paired t-test for the longitudinal evaluation. We observed decreased GMD (P < .01) at frontal, parietal, temporal and occipital lobes, subcortical grey matter, cerebellum, and brainstem. White matter atrophy was restricted to the cerebellum. Age, CAG, and disease duration predicted GMD in different areas, but age and CAG were the most important predictors. The longitudinal analysis failed to demonstrate changes. Changes in regions other than the cerebellum appeared to contribute significantly to the final International Cooperative Ataxia Rating Scale score. We confirmed cortical involvement in MJD/SCA3. The most important factors in predicting GMD were age and CAG. The lack of progression of atrophy may indicate floor effect and/or short duration of follow-up.
Subject: Adult
Aged
Female
Genetic Predisposition To Disease
Humans
Machado-joseph Disease
Magnetic Resonance Imaging
Male
Middle Aged
Neocortex
Reproducibility Of Results
Sensitivity And Specificity
Young Adult
Rights: fechado
Identifier DOI: 10.1111/j.1552-6569.2011.00614.x
Address: http://www.ncbi.nlm.nih.gov/pubmed/21699609
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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