How genetics affects the brain to produce higher-level dysfunctions in myotonic dystrophy type 1

Serra, Laura and Petrucci, Antonio and Spanò, Barbara and Torso, Mario and Olivito, Giusy and Lispi, Ludovico and Costanzi-Porrini, Sandro and Giulietti, Giovanni and Koch, Giacomo and Giacanelli, Manlio and Caltagirone, Carlo and Cercignani, Mara and Bozzali, Marco (2015) How genetics affects the brain to produce higher-level dysfunctions in myotonic dystrophy type 1. Functional Neurology, 30 (1). pp. 21-31. ISSN 1971-3274

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Myotonic dystrophy type 1 (DM1) is a multisystemic disorder dominated by muscular impairment and brain dysfunctions. Although brain damage has previously been demonstrated in DM1, its associations with the genetics and clinical/neuropsychological features of the disease are controversial. This study assessed the differential role of gray matter (GM) and white matter (WM) damage in determining higher-level dysfunctions in DM1. Ten patients with genetically confirmed DM1 and 16 healthy matched controls entered the study. The patients underwent a neuropsychological assessment and quantification of CTG triplet expansion. All the subjects underwent MR scanning at 3T, with studies including T1-weighted volumes and diffusion-weighted images. Voxel-based morphometry and tract-based spatial statistics were used for unbiased quantification of regional GM atrophy and WM integrity. The DM1 patients showed widespread involvement of both tissues. The extent of the damage correlated with CTG triplet expansion and cognition. This study supports the idea that genetic abnormalities in DM1 mainly target the WM, but GM involvement is also crucial in determining the clinical characteristics of DM1.

Item Type: Article
Uncontrolled Keywords: Cognition, diffusion imaging, DM1, genetics, VBM
Subjects: 600 Tecnologia - Scienze applicate > 610 Medicina e salute (Classificare qui la tecnologia dei servizi medici)
Depositing User: Marina Spanti
Date Deposited: 20 Sep 2019 13:27
Last Modified: 20 Sep 2019 13:27

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