Cited by 2,582Advanced Neuroimaging Techniques and ApplicationsAdvanced MRI Techniques and ApplicationsMultiple Sclerosis Research Studies

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.

Dysmyelination Revealed through MRI as Increased Radial (but Unchanged Axial) Diffusion of Water

Abstract

Myelin loss and axonal damage are both observed in white matter injuries. Each may have significant impact on the long-term disability of patients. Currently, there does not exist a noninvasive biological marker that enables differentiation between myelin and axonal injury. We describe herein the use of magnetic resonance diffusion tensor imaging (DTI) to quantify the effect of dysmyelination on water directional diffusivities in brains of shiverer mice in vivo. The principal diffusion eigenvalues of eight axonal fiber tracts that can be identified with certainty on DTI maps were measured. The water diffusivity perpendicular to axonal fiber tracts, lambda(perpendicular), was significantly higher in shiverer mice compared with age-matched controls, reflecting the lack of myelin and the increased freedom of cross-fiber diffusion in white matter. The water diffusivity parallel to axonal fiber tracts, lambda(parallel), was not different, which is consistent with the presence of intact axons. It is clear that dysmyelination alone does not impact lambda(parallel). The presence of intact axons in the setting of incomplete myelination was confirmed by electron microscopy. Although further validation is still needed, our finding suggests that changes in lambda(perpendicular) and lambda(parallel) may potentially be used to differentiate myelin loss versus axonal injury.

Overview

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Crossref · 10.1006/nimg.2002.1267

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40 of 40 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Song, S.-K., Sun, S.-W., Ramsbottom, M. J., Chang, C., Russell, J., & Cross, A. H.
Affiliations
  • Washington University in St. Louis (US)
  • Institute of Biomedical Sciences, Academia Sinica (TW)
Corresponding author
Song, Sheng-Kwei
Venue
NeuroImage
Publisher
Elsevier BV
Published
2002-11
Volume
17
Issue
3
Pages
1429-1436
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2047152236
Cited by
2,582
References
40
Citations by year
2026: 44 · 2025: 70 · 2024: 78 · 2023: 85 · 2022: 111 · 2021: 129 · 2020: 113 · 2019: 184 · 2018: 140 · 2017: 152 · 2016: 178 · 2015: 199 · 2014: 197 · 2013: 194 · 2012: 160
FWCI
11.47
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (R24CA083060, 1 R24 CA83060-01)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Clinical Neurology › Multiple Sclerosis Research Studies
Keywords
dysmyelination, demyelination, axonal injury, diffusion tensor imaging, shiverer mice, white matter injury, brain MRI biomarkers
MeSH terms
Animals, Brain, Brain Diseases, Diagnosis, Differential, Disease Models, Animal, Heterozygote, Homozygote, Humans, Image Processing, Computer-Assisted, Mice, Neurologic Mutants, Nerve Fibers, Myelinated, Hereditary Central Nervous System Demyelinating Diseases, Diffuse Axonal Injury, Diffusion Magnetic Resonance Imaging, Mice

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