Disability in progressive MS is associated with T2 lesion changes

TY - JOUR

T1 - Disability in progressive MS is associated with T2 lesion changes

AU - Ammitzbøll, C

AU - Dyrby, T B

AU - Lyksborg, M

AU - Schreiber, K

AU - Ratzer, R

AU - Romme Christensen, J

AU - Iversen, P

AU - Magyari, M

AU - Garde, E

AU - Sørensen, P S

AU - Siebner, H R

AU - Sellebjerg, F

N1 - Copyright © 2017 Elsevier B.V. All rights reserved.

PY - 2018/2

Y1 - 2018/2

N2 - BACKGROUND: Progressive multiple sclerosis (MS) is characterised by diffuse changes on brain magnetic resonance imaging (MRI), which complicates the use of MRI as a diagnostic and prognostic marker. The relationship between MRI measures (conventional and non-conventional) and clinical disability in progressive MS therefore warrants further investigation.OBJECTIVE: To investigate the relationship between clinical disability and MRI measures in patients with progressive MS.METHODS: Data from 93 primary and secondary progressive MS patients who had participated in 3 phase 2 clinical trials were included in this cross-sectional study. From 3T MRI baseline scans we calculated total T2 lesion volume and analysed magnetisation transfer ratio (MTR) and the diffusion tensor imaging indices fractional anisotropy (FA) and mean diffusivity (MD) in T2 lesions, normal-appearing white matter (NAWM) and cortical grey matter. Disability was assessed by the Expanded Disability Status Scale (EDSS) and the MS functional composite.RESULTS: T2 lesion volume was associated with impairment by all clinical measures. MD and MTR in T2 lesions were significantly related to disability, and lower FA values correlated with worse hand function in NAWM. In multivariable analyses, increasing clinical disability was independently correlated with increasing T2 lesion volumes and MTR in T2 lesions.CONCLUSION: In progressive MS, clinical disability is related to lesion volume and microstructure.

AB - BACKGROUND: Progressive multiple sclerosis (MS) is characterised by diffuse changes on brain magnetic resonance imaging (MRI), which complicates the use of MRI as a diagnostic and prognostic marker. The relationship between MRI measures (conventional and non-conventional) and clinical disability in progressive MS therefore warrants further investigation.OBJECTIVE: To investigate the relationship between clinical disability and MRI measures in patients with progressive MS.METHODS: Data from 93 primary and secondary progressive MS patients who had participated in 3 phase 2 clinical trials were included in this cross-sectional study. From 3T MRI baseline scans we calculated total T2 lesion volume and analysed magnetisation transfer ratio (MTR) and the diffusion tensor imaging indices fractional anisotropy (FA) and mean diffusivity (MD) in T2 lesions, normal-appearing white matter (NAWM) and cortical grey matter. Disability was assessed by the Expanded Disability Status Scale (EDSS) and the MS functional composite.RESULTS: T2 lesion volume was associated with impairment by all clinical measures. MD and MTR in T2 lesions were significantly related to disability, and lower FA values correlated with worse hand function in NAWM. In multivariable analyses, increasing clinical disability was independently correlated with increasing T2 lesion volumes and MTR in T2 lesions.CONCLUSION: In progressive MS, clinical disability is related to lesion volume and microstructure.

KW - Brain/diagnostic imaging

KW - Cohort Studies

KW - Cross-Sectional Studies

KW - Diffusion Tensor Imaging

KW - Disability Evaluation

KW - Female

KW - Gray Matter/diagnostic imaging

KW - Humans

KW - Male

KW - Middle Aged

KW - Multiple Sclerosis, Chronic Progressive/diagnostic imaging

KW - White Matter/diagnostic imaging

U2 - 10.1016/j.msard.2017.12.010

DO - 10.1016/j.msard.2017.12.010

M3 - Journal article

C2 - 29324249

SN - 2211-0348

VL - 20

SP - 73

EP - 77

JO - Multiple Sclerosis and Related Disorders

JF - Multiple Sclerosis and Related Disorders

ER -