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White matter volume is decreased in the brain of patients with neuromyelitis optica.
MedLine Citation:
PMID:  22978568     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Neuromyelitis optica (NMO) is an inflammatory disease involving predominantly the spinal cord and optic nerves. Whether patients with NMO have a loss in white or grey matter (GM) volumes remains to be determined. PATIENTS AND METHODS: Thirty patients with NMO, 30 healthy subjects matched for age and gender, 21 patients with multiple sclerosis (MS) and 20 patients with a clinically isolated syndrome (CIS) were studied. We applied a SIENAX post-treatment software. We compared white matter (WM) and GM volumes between groups and explored correlations of changes in NMO patients with age, gender, duration, disease severity, visual acuity and T2 hyperintensities. We also performed a voxel-based morphometry (VBM) analysis to identify the regions affected by loss of volume. RESULTS: White matter volume was significantly reduced in patients with NMO (764.4 ± 58.3 cm(3) ) compared to healthy subjects (843.1 ± 49.3 cm(3) ) (P < 0.001), whereas no difference was observed for the GM. Patients with CIS also presented an elective atrophy of WM and MS an atrophy of both WM and GM. We did not find any predictive factors of brain atrophy. The decrease in WM volume in NMO was noted even in absence of visible MRI hypersignals. The VBM analysis found a few regions of WM atrophy (corpus callosum and optic radiations, P < 0.005, uncorrected) and a few regions of GM atrophy (thalamus and prefrontal cortex, P < 0.001, uncorrected). CONCLUSION: These results suggest a significant brain involvement in NMO, especially a involvement of WM which appears not limited to secondary degeneration after spinal cord and optic nerve damages.
Authors:
J-B Chanson; J Lamy; F Rousseau; F Blanc; N Collongues; M Fleury; J-P Armspach; S Kremer; J de Seze
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-15
Journal Detail:
Title:  European journal of neurology : the official journal of the European Federation of Neurological Societies     Volume:  -     ISSN:  1468-1331     ISO Abbreviation:  Eur. J. Neurol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9506311     Medline TA:  Eur J Neurol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Author(s) European Journal of Neurology © 2012 EFNS.
Affiliation:
Département de Neurologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg and CNRS, LINC, UMR 7237, Strasbourg, France.
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