Alterations in functional connectivity are associated with white matter lesions and information processing efficiency in multiple sclerosis

José Miguel Soares*, Raquel Conde, Ricardo Magalhães, Paulo Marques, Rosana Magalhães, Luciana Gomes, Óscar F. Gonçalves, Mavilde Arantes, Adriana Sampaio

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

5 Citações (Scopus)

Resumo

Functional connectivity (FC) is typically altered in individuals with Multiple Sclerosis (MS). However, in relapsing-remitting multiple sclerosis (RRMS) patients, the relationship between brain FC, tissue integrity and cognitive impairment is still unclear as contradictory findings have been documented. In this exploratory study we compared both the whole brain connectome and resting state networks (RSNs) FC of twenty-one RRMS and seventeen healthy controls (HCs), using combined network based statistics and independent component analyses. The total white matter (WM) lesion volume and information processing efficiency were also correlated with FC in the RRMS group. Both whole brain connectome and individual RSNs FC were diminished in patients with RRMS compared to HC. Additionally, the reduction in FC was found to be a function of the total WM lesion volume, with greatest impact in those harboring the largest lesion volume. Finally, a positive correlation between FC and information processing efficiency was observed in RRMS. This complimentary whole brain and RSNs FC approach can contribute to clarify literature inconsistencies regarding FC alterations and provide new insights on the white matter structural damage in explaining functional abnormalities in RRMS.
Idioma originalEnglish
Páginas (de-até)375-388
Número de páginas14
RevistaBrain Imaging and Behavior
Volume15
Número de emissão1
DOIs
Estado da publicaçãoPublished - fev 2021
Publicado externamenteSim

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