Published in:
Open Access
01-02-2000 | Research article
Active synovial matrix metalloproteinase-2 is associated with radiographic erosions in patients with early synovitis
Authors:
Raphaela Goldbach-Mansky, Jennifer M Lee, Joseph M Hoxworth, David Smith II, Paul Duray, H Ralph Schumacher Jr, Cheryl H Yarboro, John Klippel, David Kleiner, Hani S El-Gabalawy
Published in:
Arthritis Research & Therapy
|
Issue 2/2000
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Statement of findings
Serum and synovial tissue expression of the matrix metalloproteinase (MMP)-2 and -9 and their molecular regulators, MMP-14 and TIMP-2 was examined in 28 patients with inflammatory early synovitis and 4 healthy volunteers and correlated with the presence of erosions in the patients. Immunohistological staining of MMP-2, MMP-14 and TIMP-2 localized to corresponding areas in the synovial lining layer and was almost absent in normal synovium. Patients with radiographic erosions had significantly higher levels of active MMP-2 than patients with no erosions, suggesting that activated MMP-2 levels in synovial tissue may be a marker for a more aggressive synovial lesion.