Journal article
Neuroradiologic correlates of clinical disability and progression in the X-Linked leukodystrophy Pelizaeus–Merzbacher disease
Journal of the neurological sciences, Vol.335(1-2), pp.75-81
12/15/2013
DOI: 10.1016/j.jns.2013.08.030
PMCID: PMC3969727
PMID: 24139698
Abstract
To determine whether quantitative measure of magnetic resonance imaging data from patients with the inherited leukodystrophy, Pelizaeus–Merzbacher disease (PMD) correlates with clinical severity or progression.
In our current work we have analyzed the clinical phenotypes and MRI scans of 51 male patients with PMD and 10 female carriers for whom the PLP1 genotype had been determined. In addition, we developed a 32-point functional disability scoring (FDS) system for PMD, and validated it for inter-rater reliability. Using conventional T1- and T2-weighted MRI images of the whole brain, we measured white matter and total brain volume (WMV and TBV), inter-caudate ratio (ICR), and corpus callosum area.
There was a significant positive correlation of FDS with white matter fraction (WMV/TBV) and corpus callosum area. Also, when applying a median split based on FDS, patients with lower FDS showed reduced white matter fraction and corpus callosum area, and increased ICR compared to patients with relatively higher FDS, regardless of age.
Although this patient population is heterogeneous, with multiple genetic and molecular mechanisms causing PMD, these data imply that white matter atrophy is a major pathological determinant of the clinical disability in most patients. Development of reliable non-invasive quantitative biomarkers of disease activity would be useful not only for following the natural history of the disease, but also raising the potential for evaluating future therapies.
Details
- Title: Subtitle
- Neuroradiologic correlates of clinical disability and progression in the X-Linked leukodystrophy Pelizaeus–Merzbacher disease
- Creators
- Jeremy J Laukka - Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United StatesJeffrey A Stanley - Department of Psychiatry & Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI 48201, United StatesJames Y Garbern - Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United StatesAngela Trepanier - Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United StatesGrace Hobson - Neurogenetics Research Laboratory, A.I. duPont Hospital for Children, Nemours Biomedical Research A/R, Wilmington, DE 19803, United StatesTori Lafleur - Wayne State University School of MedicineAlexander Gow - Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United StatesJohn Kamholz - Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United States
- Resource Type
- Journal article
- Publication Details
- Journal of the neurological sciences, Vol.335(1-2), pp.75-81
- DOI
- 10.1016/j.jns.2013.08.030
- PMID
- 24139698
- PMCID
- PMC3969727
- NLM abbreviation
- J Neurol Sci
- ISSN
- 0022-510X
- eISSN
- 1878-5883
- Publisher
- Elsevier B.V
- Language
- English
- Date published
- 12/15/2013
- Academic Unit
- Neurology; Psychiatry
- Record Identifier
- 9984020654902771
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