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. 1977 Feb;27(2):198–207.

Macrophage responses to mouldy hay dust, Micropolyspora faeni and zymosan, activators of complement by the alternative pathway.

H U Schorlemmer, J H Edwards, P Davies, A C Allison
PMCID: PMC1540791  PMID: 849651

Abstract

Mouse peritoneal macrophages in culture exposed to mouldy hay dust, Micropolyspora faeni or glycopeptide or protein/glycoprotein fractions from this organism show marked biochemical changes. For comparison the interaction of cultured macrophages with zymosan has been investigated. All these agents induce the release of hydrolytic enzymes from macrophages, even in the absence of serum in the medium. The release is time- and dose-dependent and is not associated with loss of the cytoplasmic enzyme lactate dehydrogenase or any other sign of cell death. The parallelism between the capacity of these agents to activate the complement system via the alternative pathway and to induce inflammatory responses in vivo and selective lysosomal enzyme secretion from cultures of macrophages is discussed. The in vitro phenomena seen with mouldy hay dust, M. faeni, the protein/glycoprotein and the glycopeptide derived from it, may be relevant to understanding the role of mononuclear phagocytes in the disease farmer's lung and other inflammatory reactions.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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