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  • Title: The stimulation of collagenase production in rabbit articular chondrocytes by interleukin-1 is increased by collagens.
    Author: Kandel RA, Dinarello CA, Biswas C.
    Journal: Biochem Int; 1987 Nov; 15(5):1021-31. PubMed ID: 2829908.
    Abstract:
    Osteoarthritis is characterized by a loss of articular cartilage due at least in part to the action of degradative enzymes secreted by chondrocytes. We have investigated the effect of type II collagen from cartilage and interleukin 1 on collagenase production in cultures of rabbit articular chondrocytes. Interleukin 1 alone stimulated the chondrocytes to secrete collagenase but this response was increased as much as fivefold by the addition of rabbit type II collagen. Bovine type II and chick type I collagens were also stimulatory. The native form of the collagens was not required since denatured collagens and purified chick type II alpha chains were effective. The observed effects of collagens and interleukin 1 may contribute to the progressive nature of osteoarthritis.
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