Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis
Background: Multiple sclerosis (MS) is a heterogeneous disorder with a progressive course that is difficult to predict on a case-by-case basis. Natural history studies of MS have demonstrated that age influences clinical progression independent of disease duration. Objective: To determine whether ag...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-01-01
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| Series: | NeuroImage: Clinical |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213158214000229 |
| _version_ | 1818887716212834304 |
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| author | R.D. Newbould R. Nicholas C.L. Thomas R. Quest J.S.Z. Lee L. Honeyfield A. Colasanti O. Malik M. Mattoscio P.M. Matthews M.P. Sormani A.D. Waldman P.A. Muraro |
| author_facet | R.D. Newbould R. Nicholas C.L. Thomas R. Quest J.S.Z. Lee L. Honeyfield A. Colasanti O. Malik M. Mattoscio P.M. Matthews M.P. Sormani A.D. Waldman P.A. Muraro |
| author_sort | R.D. Newbould |
| collection | DOAJ |
| description | Background: Multiple sclerosis (MS) is a heterogeneous disorder with a progressive course that is difficult to predict on a case-by-case basis. Natural history studies of MS have demonstrated that age influences clinical progression independent of disease duration.
Objective: To determine whether age would be associated with greater CNS injury as detected by magnetization transfer MRI.
Materials and methods: Forty MS patients were recruited from out-patient clinics into two groups stratified by age but with similar clinical disease duration as well as thirteen controls age-matched to the older MS group. Images were segmented by automated programs and blinded readers into normal appearing white matter (NAWM), normal appearing gray matter (NAGM), and white matter lesions (WMLs) and gray matter lesions (GMLs) in the MS groups. WML and GML were delineated on T2-weighted 3D fluid-attenuated inversion recovery (FLAIR) and T1 weighted MRI volumes. Mean magnetization transfer ratio (MTR), region volume, as well as MTR histogram skew and kurtosis were calculated for each region.
Results: All MTR measures in NAGM and MTR histogram metrics in NAWM differed between MS subjects and controls, as expected and previously reported by several studies, but not between MS groups. However, MTR measures in the WML did significantly differ between the MS groups, in spite of no significant differences in lesion counts and volumes.
Conclusions: Despite matching for clinical disease duration and recording no significant WML volume difference, we demonstrated strong MTR differences in WMLs between younger and older MS patients. These data suggest that aging-related processes modify the tissue response to inflammatory injury and its clinical outcome correlates in MS. |
| first_indexed | 2024-12-19T16:41:39Z |
| format | Article |
| id | doaj.art-b5484c0e3a7644b3be481acef9319567 |
| institution | Directory Open Access Journal |
| issn | 2213-1582 |
| language | English |
| last_indexed | 2024-12-19T16:41:39Z |
| publishDate | 2014-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage: Clinical |
| spelling | doaj.art-b5484c0e3a7644b3be481acef93195672022-12-21T20:13:46ZengElsevierNeuroImage: Clinical2213-15822014-01-014C64164810.1016/j.nicl.2014.02.004Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosisR.D. Newbould0R. Nicholas1C.L. Thomas2R. Quest3J.S.Z. Lee4L. Honeyfield5A. Colasanti6O. Malik7M. Mattoscio8P.M. Matthews9M.P. Sormani10A.D. Waldman11P.A. Muraro12Imanova Centre for Imaging Sciences, London, UKDivision of Brain Sciences, Imperial College London, UKDivision of Brain Sciences, Imperial College London, UKDepartment of Imaging, Imperial College Healthcare NHS Trust, UKDivision of Brain Sciences, Imperial College London, UKDepartment of Imaging, Imperial College Healthcare NHS Trust, UKImanova Centre for Imaging Sciences, London, UKDivision of Brain Sciences, Imperial College London, UKDivision of Brain Sciences, Imperial College London, UKDivision of Brain Sciences, Imperial College London, UKDepartment of Health Sciences (DISSAL), University of Genoa, ItalyDivision of Brain Sciences, Imperial College London, UKDivision of Brain Sciences, Imperial College London, UKBackground: Multiple sclerosis (MS) is a heterogeneous disorder with a progressive course that is difficult to predict on a case-by-case basis. Natural history studies of MS have demonstrated that age influences clinical progression independent of disease duration. Objective: To determine whether age would be associated with greater CNS injury as detected by magnetization transfer MRI. Materials and methods: Forty MS patients were recruited from out-patient clinics into two groups stratified by age but with similar clinical disease duration as well as thirteen controls age-matched to the older MS group. Images were segmented by automated programs and blinded readers into normal appearing white matter (NAWM), normal appearing gray matter (NAGM), and white matter lesions (WMLs) and gray matter lesions (GMLs) in the MS groups. WML and GML were delineated on T2-weighted 3D fluid-attenuated inversion recovery (FLAIR) and T1 weighted MRI volumes. Mean magnetization transfer ratio (MTR), region volume, as well as MTR histogram skew and kurtosis were calculated for each region. Results: All MTR measures in NAGM and MTR histogram metrics in NAWM differed between MS subjects and controls, as expected and previously reported by several studies, but not between MS groups. However, MTR measures in the WML did significantly differ between the MS groups, in spite of no significant differences in lesion counts and volumes. Conclusions: Despite matching for clinical disease duration and recording no significant WML volume difference, we demonstrated strong MTR differences in WMLs between younger and older MS patients. These data suggest that aging-related processes modify the tissue response to inflammatory injury and its clinical outcome correlates in MS.http://www.sciencedirect.com/science/article/pii/S2213158214000229Magnetization transferMRIMultiple sclerosisAging |
| spellingShingle | R.D. Newbould R. Nicholas C.L. Thomas R. Quest J.S.Z. Lee L. Honeyfield A. Colasanti O. Malik M. Mattoscio P.M. Matthews M.P. Sormani A.D. Waldman P.A. Muraro Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis NeuroImage: Clinical Magnetization transfer MRI Multiple sclerosis Aging |
| title | Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| title_full | Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| title_fullStr | Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| title_full_unstemmed | Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| title_short | Age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| title_sort | age independently affects myelin integrity as detected by magnetization transfer magnetic resonance imaging in multiple sclerosis |
| topic | Magnetization transfer MRI Multiple sclerosis Aging |
| url | http://www.sciencedirect.com/science/article/pii/S2213158214000229 |
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