Mapping regional grey and white matter atrophy in relapsing-remitting multiple sclerosis

Gianna Riccitelli, Maria A. Rocca, Elisabetta Pagani, Vittorio Martinelli, Marta Radaelli, Andrea Falini, Giancarlo Comi, Massimo Filippi

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: We aimed to investigate the regional distribution of grey matter (GM) and white matter (WM) atrophy in patients with relapsing-remitting (RR) MS and their relationship with gender, clinical findings, and T2 lesions. Methods: Clinical and magnetic resonance imaging assessments were obtained from 78 patients with RRMS and 88 controls. GM and WM atrophy were estimated using voxel-based morphometry (SPM8). Results: Patients with RRMS experienced atrophy of the deep GM nuclei, and several cortical regions mainly located in the fronto-parietal lobes. WM atrophy involved posterior regions of the brain, including the cerebellum and brainstem. Compared with men, affected women showed atrophy of several WM tracts, while gender did not impact GM atrophy. Disease duration > 5 years was associated with atrophy of the thalami and inferior frontal gyrus, while WM atrophy was already prominent in patients with disease duration ≤ 5 years. Expanded Disability Status Scale score > 3.0 was associated with diffuse WM atrophy and basal ganglia and precentral gyrus atrophy. T2 lesions were marginally associated to focal atrophy. Discussion: In RRMS, GM and WM atrophy have distinct patterns of regional distribution, with a sparing of GM infratentorial regions. Gender, disease duration and disability affect differently the topography of GM/WM atrophy, while T2 lesions play a modest role.

Original languageEnglish
Pages (from-to)1027-1037
Number of pages11
JournalMultiple Sclerosis Journal
Volume18
Issue number7
DOIs
Publication statusPublished - 2012

Keywords

  • disability
  • disease duration
  • gender
  • Grey matter
  • MRI
  • regional atrophy
  • relapsing-remitting multiple sclerosis
  • white matter

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology

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