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- W3105122247 abstract "In multiple sclerosis (MS), up to 57% of white matter lesions are chronically active. These slowly expanding lesions (SELs) contribute to disability progression.The aim of this study is to compare fingolimod and natalizumab effects on progressive linearly enlarging lesions (i.e. SELs), a putative biomarker of smouldering inflammation.Relapsing-remitting MS patients starting fingolimod (n = 24) or natalizumab (n = 28) underwent 3T brain magnetic resonance imaging (MRI) at baseline, months 6, 12 and 24. SELs were identified among baseline-visible lesions showing ⩾ 12.5% of annual increase, calculated by linearly fitting the Jacobian of the nonlinear deformation field between timepoints obtained combining T1- and T2-weighted scans. SEL burden, magnetization transfer ratio (MTR) and T1 signal intensity were compared using linear models.The prevalences of fingolimod (75%) and natalizumab patients (46%) with ⩾ 1 SEL were not significantly different (adjusted-p = 0.08). Fingolimod group had higher SEL number and volume (adjusted-p ⩽ 0.047, not false discovery rate (FDR) survived). In both groups, SELs versus non-SELs showed lower MTR and T1 signal intensity (adjusted-p ⩽ 0.01, FDR-survived). Longitudinally, non-SEL MTR increased in both treatment groups (adjusted-p ⩽ 0.005, FDR-survived). T1 signal intensity decreased in SELs with both treatments (adjusted-p ⩽ 0.049, FDR-survived in fingolimod group) and increased in natalizumab non-SELs (adjusted-p = 0.03, FDR-survived).The effects of natalizumab and fingolimod on SEL occurrence seem modest, with natalizumab being slightly more effective. Both treatments may promote reparative mechanisms in stable or chronic inactive lesions." @default.
- W3105122247 created "2020-11-23" @default.
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- W3105122247 date "2020-11-13" @default.
- W3105122247 modified "2023-10-13" @default.
- W3105122247 title "Occurrence and microstructural features of slowly expanding lesions on fingolimod or natalizumab treatment in multiple sclerosis" @default.
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- W3105122247 doi "https://doi.org/10.1177/1352458520969105" @default.
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