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. 1979 Dec 15;184(3):643–650. doi: 10.1042/bj1840643

Macrophage-fibroblast interactions in collagenase production and cartilage degradation.

G Huybrechts-Godin, P Hauser, G Vaes
PMCID: PMC1161849  PMID: 231975

Abstract

Rabbit bone-marrow macrophages and fibroblasts were cultured, independently or together, with pieces of 35S-labelled cartilage or at the surface of dried [14C]collagen gels. Each type of cell, cultivated alone, rapidly degraded the proteoglycan of cartilage, but only the fibroblasts degraded collagen. The co-culture of both types of cell had no consistent effect on the rate of proteoglycan degradation, but it stimulated the rate of collagen degradation. In parallel, the accumulation of collagenase in the culture fluid was enhanced but not that of neutral proteinase. Coinditioned media from macrophage cultures added to cultures of fibroblasts had the same effect as the living macrophages in stimulating the production of collagenase. Their action was itself enhanced when the macrophages had been activated by concanavalin A-stimulated spleen-cell factors. These data suggest that fibroblasts may act as effector cells in producing collagenase and degrading collagen in response to soluble factors released by macrophages under the control of lymphocyte factors.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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