Plasma proteins take their toll on the joint in osteoarthritis |
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Authors: | Steven R Goldring Carla R Scanzello |
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Affiliation: | (1) Hospital for Special Surgery, Weill Cornell Medical Center, New York, NY, USA;(2) Section of Rheumatology, Departments of Immunology/Microbiology and Biochemistry, Rush University Medical Center, Chicago, IL 60612, USA |
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Abstract: | In their recent study, Sohn and colleagues identify multiple plasma proteins in the synovial fluid of patients with osteoarthritis (OA) and demonstrate the capacity of several of the proteins to activate macrophages via the innate immune receptor Toll-like receptor-4 (TLR-4). The authors speculate that the plasma proteins transit into the synovial compartment at sites of tissue damage where the endothelial barrier may be compromised, thus bringing them into contact with the articular surface and cells within the synovium. These results demonstrate a novel mechanism by which synovial inflammation can be initiated in patients with OA and how this process may contribute to the pathogenesis of OA joint pathology. |
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