Longitudinal patterns of cortical thinning in multiple sclerosis

Charidimos Tsagkas, M. Mallar Chakravarty, Laura Gaetano, Yvonne Naegelin, Michael Amann, Katrin Parmar, Athina Papadopoulou, Jens Wuerfel, Ludwig Kappos, Till Sprenger, Stefano Magon

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

In multiple sclerosis (MS), cortical atrophy is correlated with clinical and neuropsychological measures. We aimed to examine the differences in the temporospatial evolution of cortical thickness (CTh) between MS-subtypes and to study the association of CTh with T2-weighted white matter lesions (T2LV) and clinical progression. Two hundred and forty-three MS patients (180 relapsing–remitting [RRMS], 51 secondary-progressive [SPMS], and 12 primary-progressive [PPMS]) underwent annual clinical (incl. expanded disability status scale [EDSS]) and MRI-examinations over 6 years. T2LV and CTh were measured. CTh did not differ between MS-subgroups. Higher total T2LV was associated with extended bilateral CTh-reduction on average, but did not correlate with CTh-changes over time. In RRMS, CTh- and EDSS-changes over time were negatively correlated in large bilateral prefrontal, frontal, parietal, temporal, and occipital areas. In SPMS, CTh was not associated with the EDSS. In PPMS, CTh- and EDSS-changes over time were correlated in small clusters predominantly in left parietal areas. Increase of brain lesion load does not lead to an immediate CTh-reduction. Although CTh did not differ between MS-subtypes, a dissociation in the correlation between CTh- and EDSS-changes over time between RRMS and progressive-MS was shown, possibly underlining the contribution of subcortical pathology to clinical progression in progressive-MS.

Original languageEnglish
Pages (from-to)2198-2215
Number of pages18
JournalHuman Brain Mapping
Volume41
Issue number8
DOIs
StatePublished - 1 Jun 2020
Externally publishedYes

Keywords

  • MRI
  • T2 lesions
  • atrophy
  • biomarkers
  • cortical thickness
  • multiple sclerosis

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