Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability.

Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Research Abstract Details 

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Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Abstract Text:

Arnaud Charil,Alain Dagher,Jason P Lerch,Alex P Zijdenbos,Keith J Worsley,Alan C Evans,

Multiple sclerosis (MS) is thought to predominantly affect white matter (WM). Recently, however, loss of cortical gray matter has also been described. Little is known about the cause of cortical atrophy in MS, whether it occurs early in the disease course, and whether it affects all cortical regions equally or if there is a preferential pattern of focal cortical atrophy. An automated method was used to compute the thickness at every vertex of the cortical surface of the brains of 425 early relapsing-remitting MS patients. We correlated cortical thickness with the WM lesion load and the Expanded Disability Status Scale score. Mean cortical thickness correlated with WM lesion load and disability. The correlations of cortical thickness with total lesion load and disability were most significant in cingulate gyrus, insula, and associative cortical regions. Conversely, primary sensory, visual, and motor areas showed a less significant relationship. The highest amount of atrophy per lesion volume or disability scale unit was in the anterior cingulate cortex. This study confirms the relation between cortical atrophy, WM lesion load, and disability in MS, and suggests that cortical atrophy occurs even in MS patients with only mild disability. Most interestingly, we show a specific regional pattern of focal atrophy in MS that is distinctively different from the one in normal aging. The predilection of the atrophic process for areas that are heavily inter-connected with other brain regions suggests that interruption of WM tracts by MS plaques contributes, at least in part, to the development of cortical atrophy.

Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Publishing Authors By Initials

A Charil,A Dagher,JP Lerch,AP Zijdenbos,KJ Worsley,AC Evans,

For similar nervous system diseases: autoimmune diseases of the nervous system: demyelinating autoimmune diseases, cns: multiple sclerosis research abstracts see: nervous system diseases: autoimmune diseases of the nervous system: demyelinating autoimmune diseases, cns: multiple sclerosis research

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Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: NeuroImage

VOLUME: 34

Page Numbers: 509-17

Journal Abbreviation: Neuroimage

ISSN: 1053-8119

DAY: 16

MONTH: 11

YEAR: 2006

Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Information

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LANGUAGE: eng

NlmUniqueID: 9215515

Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability. Keywords Mesh Terms:

KEYWORDS: Multiple Sclerosis

MESH TERMS: physiopathology

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Grant and Affiliation Information for Focal cortical atrophy in multiple sclerosis: relation to lesion load and disability.

AFFILIATION: McConnell Brain Imaging Centre, Montreal Neurological Institute, 3801 University St., Montréal (Québec), Canada H3A 2B4.

Country: United States

AGENCY: United States NIMH

GRANT: P01MH52176-06

ACRONYM: MH

MEDLINETA: Neuroimage

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