## Abstract Sera and synovial fluids from 88 patients with rheumatoid arthritis were examined for circulating immune complexes by three assays: monoclonal rheumatoid factor radioimmunoassay, Clq binding assay, and Raji cell radioassay. Paired samples were available for 82 patients. Immune complexes
Capacity to solubilize immune complexes in sera and synovial fluids from patients with rheumatoid arthritis
โ Scribed by E. Dayer; J. C. Gerster; M. T. Aguado; P. H. Lambert
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 757 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0004-3591
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โฆ Synopsis
Abstract
Fiftyโsix sera and 33 synovial fluids from rheumatoid arthritis patients were studied to evaluate their capacity to solubilize immune complexes. A decreased function was found in 65% of rheumatoid synovial fluids when compared with 13 osteoarthritis synovial fluids. The decrease of immune complex solubilization capacity correlated with the decrease of hemolytic activity of the alternative complement pathway (P < 0.001) and inversely with the level of immune complexes (P < 0.05). Synovial fluids with low and normal immune complex solubilization capacity were compared; the results confirmed a possible role of the synovial complement system in modulating the size and thus the diffusion and clearance of locally generated immune complexes.
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Synovial fluid (SF) and synovial tissue from 10 patients with juvenile rheumatoid arthritis were examined. The SFs were heterogeneous with respect to the degree of complement activation. Quantification of C3dg and the terminal complement complex revealed a positive correlation between activation of
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