title: Levels of rheumatoid factor isotypes, metalloproteinase-3 and tissue inhibitor of metalloproteinase-1 in synovial fluid from various arthritides.
abstract: When synovial effusion is the only symptom, it is often difficult to make an exact diagnosis of the arthritic disease. To distinguish various types of arthritis with synovial effusion, we measured the levels of matrix metalloproteinase-3 (MMP-3, Stromelysin), tissue inhibitor of metalloproteinase-1 (TIMP-1) and rheumatoid factor (RF) isotypes in synovial fluid (SF) from patients with rheumatoid arthritis (RA), osteoarthritis (OA), pyogenic arthritis (PA), pseudogouty arthritis (PG), gouty arthritis (GA) and traumatic arthritis (TA). SF was aspirated from the knee joint or the ankle joint. Levels of IgG-, IgM- and IgA-RF isotypes were measured by ELISA. Levels of MMP-3 and TIMP-1 in SF were simultaneously determined by a one-step EIA system. Levels of IgG-RF, IgM-RF and MMP-3 in SF from RA patients were significantly higher than those in OA, PA, PG, GA and TA. However, IgA-RF in SF from RA patients, when compared with PA and GA, did not show a significantly increased level. In addition, TIMP-1 in SF from RA, when compared with PA and TA, also has not shown a significantly increased level. Therefore, in addition to analysing clinical data, measurements of IgG-RF, IgM-RF and MMP-3 in SF may contribute in distinguishing RA from other arthritic diseases.
authors.affiliation: Department of Orthopedic Surgery, Hamamatsu University School of Medicine, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kageyama
authors.forename: S
authors.initials: S
authors.lastname: Miyamoto
authors.forename: T
authors.initials: T
authors.lastname: Ozeki
authors.forename: M
authors.initials: M
authors.lastname: Hiyohsi
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: A
authors.initials: A
authors.lastname: Nagano
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001168:Arthritis / Q000175:diagnosis / Q000378:metabolism*; D015415:Biomarkers; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007132:Immunoglobulin Isotypes / Q000378:metabolism*; D008297:Male; D019278:Matrix Metalloproteinase 3 / Q000378:metabolism*; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000276:immunology*; D012720:Severity of Illness Index; D013582:Synovial Fluid / Q000378:metabolism*; D019714:Tissue Inhibitor of Metalloproteinases / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D007132:Immunoglobulin Isotypes; D019714:Tissue Inhibitor of Metalloproteinases; D012217:Rheumatoid Factor; D019278:Matrix Metalloproteinase 3