Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis
Purpose To identify statistical consensus between published studies for distribution and functional relevance of tract white matter (WM) degradation in multiple sclerosis (MS). Materials and Methods By systematically searching online databases, tract-based spatial statistics studies were iden...
| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Radiological Society of North America
2015
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| Online Access: | https://eprints.nottingham.ac.uk/38908/ |
| _version_ | 1848795717786664960 |
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| author | Welton, Thomas Kent, Daniel Constantinescu, Cris S. Auer, Dorothee P. Dineen, Robert A. |
| author_facet | Welton, Thomas Kent, Daniel Constantinescu, Cris S. Auer, Dorothee P. Dineen, Robert A. |
| author_sort | Welton, Thomas |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Purpose
To identify statistical consensus between published studies for distribution and functional relevance of tract white matter (WM) degradation in multiple sclerosis (MS).
Materials and Methods
By systematically searching online databases, tract-based spatial statistics studies were identified that compared fractional anisotropy (FA; a marker for WM integrity) in MS patients to healthy control subjects, correlated FA in MS patients with physical disability, or correlated FA in MS patients with cognitive performance. Voxelwise meta-analysis was performed by using the Signed Differential Mapping method for each comparison. Moderating effects of mean age, mean physical disability score, imager magnet strength, lesion load, and number of diffusion directions were assessed by means of meta-regression.
Results
Meta-analysis was performed on data from 495 patients and 253 control subjects across 12 studies. MS diagnosis was significantly associated with widespread lower tract FA (nine studies; largest cluster, 4379 voxels; z = 7.1; P < .001). Greater physical disability was significantly associated with lower FA in the right posterior cingulum, left callosal splenium, right inferior fronto-occipital fasciculus, and left fornix crus (six studies; 323 voxels; z = 1.7; P = .001). Impaired cognition was significantly associated with lower FA in the callosal genu, thalamus, right posterior cingulum, and fornix crus (seven studies; largest cluster, 980 voxels; z = 2.5; P < .001).
Conclusion
WM damage is widespread in MS with differential and only minimally overlapping distributions of low FA that relates to physical disability and cognitive impairment. The higher number of clusters of lower FA in relation to cognition and their higher z scores suggest that cerebral WM damage may have a greater relevance to cognitive dysfunction than physical disability in MS, and that low anterior callosal and thalamic FA have specific importance to cognitive status. |
| first_indexed | 2025-11-14T19:36:32Z |
| format | Article |
| id | nottingham-38908 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:36:32Z |
| publishDate | 2015 |
| publisher | Radiological Society of North America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-389082020-05-04T20:09:26Z https://eprints.nottingham.ac.uk/38908/ Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis Welton, Thomas Kent, Daniel Constantinescu, Cris S. Auer, Dorothee P. Dineen, Robert A. Purpose To identify statistical consensus between published studies for distribution and functional relevance of tract white matter (WM) degradation in multiple sclerosis (MS). Materials and Methods By systematically searching online databases, tract-based spatial statistics studies were identified that compared fractional anisotropy (FA; a marker for WM integrity) in MS patients to healthy control subjects, correlated FA in MS patients with physical disability, or correlated FA in MS patients with cognitive performance. Voxelwise meta-analysis was performed by using the Signed Differential Mapping method for each comparison. Moderating effects of mean age, mean physical disability score, imager magnet strength, lesion load, and number of diffusion directions were assessed by means of meta-regression. Results Meta-analysis was performed on data from 495 patients and 253 control subjects across 12 studies. MS diagnosis was significantly associated with widespread lower tract FA (nine studies; largest cluster, 4379 voxels; z = 7.1; P < .001). Greater physical disability was significantly associated with lower FA in the right posterior cingulum, left callosal splenium, right inferior fronto-occipital fasciculus, and left fornix crus (six studies; 323 voxels; z = 1.7; P = .001). Impaired cognition was significantly associated with lower FA in the callosal genu, thalamus, right posterior cingulum, and fornix crus (seven studies; largest cluster, 980 voxels; z = 2.5; P < .001). Conclusion WM damage is widespread in MS with differential and only minimally overlapping distributions of low FA that relates to physical disability and cognitive impairment. The higher number of clusters of lower FA in relation to cognition and their higher z scores suggest that cerebral WM damage may have a greater relevance to cognitive dysfunction than physical disability in MS, and that low anterior callosal and thalamic FA have specific importance to cognitive status. Radiological Society of North America 2015-04 Article PeerReviewed Welton, Thomas, Kent, Daniel, Constantinescu, Cris S., Auer, Dorothee P. and Dineen, Robert A. (2015) Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis. Radiology, 275 (1). pp. 89-96. ISSN 1527-1315 http://pubs.rsna.org/doi/abs/10.1148/radiol.14140925 doi:10.1148/radiol.14140925 doi:10.1148/radiol.14140925 |
| spellingShingle | Welton, Thomas Kent, Daniel Constantinescu, Cris S. Auer, Dorothee P. Dineen, Robert A. Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title | Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title_full | Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title_fullStr | Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title_full_unstemmed | Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title_short | Functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| title_sort | functionally relevant white matter degradation in multiple sclerosis: a tract-based spatial meta-analysis |
| url | https://eprints.nottingham.ac.uk/38908/ https://eprints.nottingham.ac.uk/38908/ https://eprints.nottingham.ac.uk/38908/ |