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  • Title: Cellular control of collagen breakdown in rheumatoid arthritis.
    Author: Harris ED, Vater CA, Mainardi CL, Werb Z.
    Journal: Agents Actions; 1978 Jan; 8(1-2):36-42. PubMed ID: 205120.
    Abstract:
    Remodelling of connective tissue and its destruction in rheumatoid arthritis is related to collagenolysis. Study of collagenase released by rheumatoid synovial cels has indicated that the enzyme is released as latent form from adherent synovial cells in culture. As a latent enzyme it is protected from complexing with alpha2 macroglobulin, the principal proteinase inhibitor. Activation in vivo is very likely caused by proteases which destroy or complex with a portion of collagenase responsible for its latency. Recent data suggest that the latent collagenase is an enzyme-inhibitor complex and not a true zymogen.
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