Macrophages and the synthesis of connective tissue components
1980
KULONEN, EINO | POTILA, MARITA
1. Macrophage homogenate, added to the incubation medium of granulation tissue slices, decreases the incorporation of labelled proline to collagen and other proteins, to a greater extent in the presence of certain prostaglandins and in oxygen atmosphere, but to a lesser degree if serotonin and cyclic AMP are added. 2. Rheumatoid synovial fluid, connective tissue active peptide (CTAP) of Castor and an extract from CCl₄‐damaged liver stimulate collagen synthesis in the presence of macrophages. 3. Preparations from non‐treated macrophages stimulate the incorporation of glucosamine to acid mucopolysaccharides, mainly hyaluronate. 4. In a developing rat granuloma, the formation of collagen was stimulated by homogenized macrophages and by macrophage culture medium, but especially by whole macrophages in the presence of SiO₂.
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