Different patterns of longitudinal brain and spinal cord changes and their associations with disability progression in NMO and MS
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To investigate the longitudinal spinal cord and brain changes in neuromyelitis optica (NMO) and multiple sclerosis (MS) and their associations with disability progression.
Patients and methods
We recruited 28 NMO, 22 MS, and 20 healthy controls (HC), who underwent both spinal cord and brain MRI at baseline. Twenty-five NMO and 20 MS completed 1-year follow-up. Baseline spinal cord and brain lesion loads, mean upper cervical cord area (MUCCA), brain, and thalamus volume and their changes during a 1-year follow-up were measured and compared between groups. All the measurements were also compared between progressive and non-progressive groups in NMO and MS.
MUCCA decreased significantly during the 1-year follow-up in NMO not in MS. Percentage brain volume changes (PBVC) and thalamus volume changes in MS were significantly higher than NMO. MUCCA changes were significantly different between progressive and non-progressive groups in NMO, while baseline brain lesion volume and PBVC were associated with disability progression in MS. MUCCA changes during 1-year follow-up showed association with clinical disability in NMO.
Spinal cord atrophy changes were associated with disability progression in NMO, while baseline brain lesion load and whole brain atrophy changes were related to disability progression in MS.
• Spinal cord atrophy progression was observed in NMO.
• Spinal cord atrophy changes were associated with disability progression in NMO.
• Brain lesion and atrophy were related to disability progression in MS.
KeywordsMultiple sclerosis Neuromyelitis optica Mean upper cervical cord area Brain MRI
Mean upper cervical cord area
Normalised brain volume
Normalised thalamic volume
Percentage brain volume changes
Percentage ventricular volume change
Relapsing remitting MS
Compliance with ethical standards
The scientific guarantor of this publication is Yaou Liu.
Conflict of interest
The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
This work was supported by the ECTRIMS-MAGNMIS Fellowship from ECTRIMS (YL), the National Natural Science Foundation of China (Grant Nos. 81571631 and 81401377), the Beijing Natural Science fund (Grant No. 7162077 YL), and the Beijing Nova Program (Grant No. xx2013045, YL), and the Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (Grant No. ZYLX201609).
Statistics and biometry
No complex statistical methods were necessary for this paper.
Institutional Review Board approval was obtained.
Written informed consent was obtained from all subjects (patients) in this study.
• diagnostic or prognostic study
• performed at one institution
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