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  • Title: Fc-receptor cross-linking induces rapid secretion of tumor necrosis factor (cachectin) by human peripheral blood monocytes.
    Author: Debets JM, Van der Linden CJ, Dieteren IE, Leeuwenberg JF, Buurman WA.
    Journal: J Immunol; 1988 Aug 15; 141(4):1197-201. PubMed ID: 3135322.
    Abstract:
    In this study it was demonstrated that cross-linking of FcR on human monocytes induces the secretion of the cytotoxic and immunoregulatory cytokine TNF. Both soluble and insoluble immune complexes, solid-phase antibody and antibody-coated phagocytizable particles were used to cross-link FcR on monocytes. It was observed that monocytes secreted large amounts of TNF in each of these instances. Kinetic studies performed with soluble immune complexes showed that TNF was secreted very rapidly, e.g., within 2 h after addition of immune complexes to monocytes. These findings are relevant for the understanding of FcR-mediated immune responses by monocytes and macrophages, for example antibody-dependent cellular cytotoxicity and phagocytosis, and for disease states associated with circulating or tissue-fixed immune complexes.
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