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. 1974 Sep;71(9):3598–3601. doi: 10.1073/pnas.71.9.3598

Collagenase Production by Endotoxin-Activated Macrophages

Larry M Wahl *, Sharon M Wahl †, Stephan E Mergenhagen †, George R Martin *
PMCID: PMC433822  PMID: 4372628

Abstract

Peritoneal exudate macrophages, when exposed to bacterial lipopolysaccharide in culture, were found to produce collagenase (EC 3.4.24.3). This enzyme was not detected in extracts of the macrophages or in media from nonstimulated macrophage cultures. Lipidcontaining fractions of the lipopolysaccharide, including a glycolipid from the rough mutant of Salmonella minnesota (R595) and lipid A, were potent stimulators of collagenase production. The lipid-free polysaccharide fraction had no effect. Cycloheximide prevented the production of collagenase by endotoxin-treated macrophages, suggesting that it was newly synthesized.

Keywords: lipid A, lipopolysaccharide, connective tissue

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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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