Linked Life Data

8646430

Source:http://linkedlifedata.com/resource/pubmed/id/8646430

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-7-19
pubmed:abstractText
Proteolytic joint destruction in inflammatory and non-inflammatory arthropathy is believed to be mediated, at least in part, by the plasminogen activation (PA) system. To further investigate possible involvement of the PA system, we quantified immunoreactive urokinase-type plasminogen activator (u-PA), tissue-type plasminogen activator (t-PA), both plasminogen activator inhibitors (PAI-1 and PAI-2) and u-PA-receptor (u-PAR) in synovial tissue extracts of 14 patients with rheumatoid arthritis (RA) and 12 with osteoarthritis (OA). u-PA, PAI-1, PAI-2 and u-PAR concentrations were significantly higher in RA than in OA patients. t-PA antigen levels were significantly lower in RA than in OA synovial tissue extracts. Immunohistochemistry was performed to compare the distribution and staining intensity of these components in samples of RA and OA synovial tissue. Intense immunostaining of u-PA, u-PAR, PAI-1 and, to a lesser degree, PAI-2 was observed predominantly in the synovial lining of RA patients. In OA patients, u-PA, PAI-1, PAI-2 and u-PAR were barely detectable. t-PA immunostaining was restricted to the endothelial side of vascular walls in both groups. We conclude that the observed increase of u-PA, u-PAR and PAI expression, distributed mainly in the synovial lining area of proliferative and invasively growing synovial tissue in RA patients, supports a pathogenic role for the PA system in destructive arthritis. Depressed t-PA-mediated plasminogen activation might contribute to delayed intra-articular fibrin removal.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0263-7103
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
416-23
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Difference in expression of the plasminogen activation system in synovial tissue of patients with rheumatoid arthritis and osteoarthritis.
pubmed:affiliation
Department of Rheumatology, University Hospital Leiden, The Netherlands.
pubmed:publicationType
Journal Article, Comparative Study