Linked Life Data

11764092

Source:http://linkedlifedata.com/resource/pubmed/id/11764092

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2001-12-14
pubmed:abstractText
Extracellular matrix (ECM) alterations in the central nervous system (CNS) of multiple sclerosis (MS) patients result from blood-brain barrier breakdown, release and activation of proteases, and synthesis of ECM components. To elucidate their potential pathophysiologic roles, we analyzed expression of major CNS ECM proteoglycans (PGs) in MS and control CNS tissues. In active MS plaque edges, 3 CNS lecticans (versican, aggrecan, and neurocan) and dermatan sulfate PG were increased in association with astrocytosis; in active plaque centers they were decreased in the ECM and accumulated in foamy macrophages, suggesting that these ECM PGs are injured and phagocytosed along with myelin. In inactive lesions they were diminished and in normal-appearing white matter they showed heretofore-unappreciated abnormal heterogeneous aggregation. Phosphacan, an ECM PG abundant in both gray and white matter, was less markedly altered. Since in development the spaciotemporal expression of ECM PGs influences neurite outgrowth, cell migration, axon guidance, and myelination, these data suggest that 1) enhanced white matter lectican and dermatan sulfate PG expression in the pro-inflammatory milieu of expanding lesion edges contributes to their sharp boundaries and the failure of neuronal ingrowth; 2) decreases in plaque centers may preclude regeneration and repair; and 3) diffuse ECM PG damage relates to axon degeneration outside of overt lesions. Thus, ECM PG alterations are specific, temporally dynamic, and widespread in MS patients and may play critical roles in lesion pathogenesis and CNS dysfunction.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-3069
pubmed:author
pubmed:issnType
Print
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1198-207
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
White matter extracellular matrix chondroitin sulfate/dermatan sulfate proteoglycans in multiple sclerosis.
pubmed:affiliation
Department of Pathology, Stanford University School of Medicine, California 94305, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't