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

Serra, L, Petrucci, A, Spanò, B, Torso, M, Olivito, G, Lispi, L, Costanzi-Porrini, S, Giulietti, G, Koch, G, Giacanelli, M, Caltagirone, C, Cercignani, M and Bozzali, M (2015) How genetics affects the brain to produce higher-level dysfunctions in myotonic dystrophy type 1. Functional Neurology, 30 (1). pp. 21-31. ISSN 0393-5264

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Abstract

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 How genetics affects the brain to produce higher-level dysfunctions in myotonic dystrophy type 1matched 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 tractbased 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 DM1mainly target the WM, but GM involvement is also crucial in determining the clinical characteristics of DM1.

Item Type: Article
Keywords: cognition, diffusion imaging, DM1, genetics, VBM
Schools and Departments: Brighton and Sussex Medical School > Neuroscience
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry > RC0346 Neurology. Diseases of the nervous system Including speech disorders
Depositing User: Patricia Butler
Date Deposited: 26 Nov 2015 20:12
Last Modified: 24 Jul 2017 17:19
URI: http://sro.sussex.ac.uk/id/eprint/54566
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