PMID: 9640132Jun 26, 1998Paper

Inactivation of antithrombin III in synovial fluid from patients with rheumatoid arthritis

Annals of the Rheumatic Diseases
H W JonesP G Winyard

Abstract

To investigate the thrombin inhibitory capacity of antithrombin III in the inflamed human joint. Thrombin inhibitory capacity was measured, using a kinetic spectophotometric method, in matched plasma and synovial fluid samples of patients with rheumatoid arthritis (n = 22) and osteoarthritis (n = 16), together with normal control plasma samples (n = 13). In the same samples, the concentration of antithrombin III was also determined by the method of radial immunodiffusion. The combination of these measurements allowed the calculation of the specific thrombin inhibitory capacity of these samples. An increased concentration of antithrombin III in rheumatoid compared with osteoarthritic synovial fluid was noted (p < 0.05). However, there was a significant depression in the specific activity of antithrombin III in rheumatoid synovial fluid when compared with matched plasma samples (p < 0.001) or with osteoarthritic synovial fluid (p < 0.05). In rheumatoid synovial fluid the thrombin inhibitory capacity of antithrombin III is disproportionately depressed relative to the concentration of antithrombin III, indicating the inactivation of antithrombin III in the rheumatoid joint.

Citations

Mar 4, 2005·Arthritis Research & Therapy·Xiaotian ChangKazuhiko Yamamoto
Mar 1, 2012·Journal of Proteomics·Elisabetta ChiaradiaAndrea Scaloni
Apr 13, 2021·Biochemical Society Transactions·David J Wilkinson

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