Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1999-12-15
pubmed:abstractText
Patients with primary progressive multiple sclerosis may develop severe disability despite a paucity of lesions on conventional magnetic resonance imaging, raising the possibility that intrinsic changes in normal appearing white matter (NAWM) contribute to disability. This study has measured magnetisation transfer ratio (MTR), an index of tissue damage, of NAWM in 52 patients with primary progressive multiple sclerosis and 26 healthy controls. Absolute values of MTR were obtained from the genu of the corpus callosum and pons, and mean values were calculated from bilateral regions in the centrum semiovale, frontal white matter, parieto-occipital white matter and posterior limb of the internal capsule. The median MTR was lower in all regions in patients compared to controls. Median values (per cent units) were significantly lower in corpus callosum (39.73 vs 40.63; P=0.01), frontal white matter (39.11 vs 39.59; P=0.01) and centrum semiovale (37.21 vs37.82; P<0.05). This study has demonstrated small but widespread decreases in MTR in NAWM in primary progressive multiple sclerosis supporting the hypothesis that there are intrinsic changes in NAWM which may contribute to disability in this patient group.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1352-4585
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
313-6
pubmed:dateRevised
2011-11-3
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Magnetisation transfer of normal appearing white matter in primary progressive multiple sclerosis.
pubmed:affiliation
NMR Research Unit, Institute of Neurology, Queen Square, London WC1N 3BG, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't