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  • Title: In vitro biosynthesis by articular chondrocytes of a specific low molecular size proteoglycan pool.
    Author: Vittur F, Dumontier MF, Stagni N, Corvol M.
    Journal: FEBS Lett; 1983 Mar 07; 153(1):187-93. PubMed ID: 6337876.
    Abstract:
    Proteoglycans synthesized by articular and epiphyseal chondrocytes in culture were compared. Proteoglycans extruded by the two types of cells into the culture medium are of identical Mr. On the other hand, the proteoglycans of cells or pericellular matrix synthesized by the articular chondrocytes are characterized by an heterogeneous fraction of low-Mr which is not present in the material derived from epiphyseal chondrocytes. There are at least two components in this fraction: the first seems to be a precursor of aggregated proteoglycans, the other may represent a component of cell coat. Stimulation of the cell cultures with vitamin D metabolites and somatomedin enhances proteoglycan biosynthesis but no modification is observed in the proteoglycan Mr.
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