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  • Title: Mechanisms of lysosomal enzyme secretion by human monocytes.
    Author: Leoni P, Dean RT.
    Journal: Biochim Biophys Acta; 1983 Jun 02; 762(3):378-89. PubMed ID: 6849984.
    Abstract:
    Secretion of lysosomal enzymes by human monocytes in response to various stimuli and the effect of conditioned media from lymphocytes and neutrophils was studied. Monocytes were found to release beta-glucosaminidase in response to NH4Cl and to particles (zymosan, opsonised zymosan, asbestos and latex), but do not respond to some soluble stimuli like formyl-methionyl-leucyl-phenylalanine, phorbol myristate acetate, cytochalasin B, concanavalin A and N-acetylmuramyl-L-alanyl-D-isoglutamine. Neutrophil conditioned medium or neutrophil components did not have any effect on secretion. When treated with lymphokines the cells are more responsive, especially to zymosan. Even through there are similarities in the secretory activities of mouse macrophages and human monocytes, there are several differences both in the quantity of the response and in the mechanisms involved.
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