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  • Title: Differential induction of interleukin-6 production in monocytes, endothelial cells and smooth muscle cells.
    Author: Aarden L, Helle M, Boeije L, Pascual-Salcedo D, de Groot E.
    Journal: Eur Cytokine Netw; 1991; 2(2):115-20. PubMed ID: 1813014.
    Abstract:
    Studying the production of IL-6 (interleukin-6) by monocytes, endothelial cells and smooth muscle cells we observed that cytokine inducers like IL-1, TNF alpha (tumor necrosis factor alpha), LPS (lipopolysaccharide), SAC (Staphylococcus Aureus Cowan 1) and PMA could be divided roughly into two categories. Bacterial products such as LPS or SAC have a potent IL-6 inducing effect on monocytes and minor or no effect on endothelial- and smooth muscle cells. The other category comprising IL-1, TNF alpha and PMA induces IL-6 production in endothelial- and smooth muscle cells. Only IL-1 induces IL-6 production in monocytes as well as in endothelial cells and smooth muscle cells. In addition to IL-6, also IL-1 and TNF alpha are produced by monocytes however with different kinetics. None of the stimuli had any inhibitory effect on IL-6 production with the exception of PMA. Whereas PMA induced IL-6 production in endothelial cells and it potentiated the induction of IL-6 by IL-1 in these cells, it inhibited LPS-stimulated IL-6 production in monocytes. In line with the effects of PMA, staurosporin induced IL-6 production in monocytes and it inhibited IL-1 driven IL-6 production by endothelial cells.
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