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. 1994 Feb;47(2):113–116. doi: 10.1136/jcp.47.2.113

Distribution of the matrix metalloproteinases stromelysin, gelatinases A and B, and collagenase in Crohn's disease and normal intestine.

C J Bailey 1, R M Hembry 1, A Alexander 1, M H Irving 1, M E Grant 1, C A Shuttleworth 1
PMCID: PMC501822  PMID: 8132824

Abstract

AIMS--To investigate the role of the matrix metalloproteinases (MMPs) in the connective tissue changes seen in the intestine in Crohn's disease. METHODS--Indirect immunofluorescence microscopy using specific antibodies to the MMPs (collagenase, gelatinase A and B, and stromelysin) were used to assess the distribution of these enzymes in normal and diseased intestine. RESULTS--In normal intestine the matrix metalloproteinases were confined to a few isolated inflammatory cells, but in Crohn's disease, the inflammatory infiltrate was associated with increased numbers of polymorphonuclear leucocytes which stained positive for gelatinase B. Stromelysin was also detected extracellularly on the connective tissue matrix in regions of smooth muscle cell proliferation and mucosal degradation. Interestingly, in ulcerative colitis, another inflammatory bowel disease, stromelysin was localised in the lamina propria in regions of mucosal loss. CONCLUSIONS--The increased numbers of inflammatory cells containing gelatinase B, and the localisation of extracellular stromelysin in regions of fibrosis and mucosal degradation, suggest that these enzymes have a role in the pathological changes seen in Crohn's disease. In cases of ulcerative colitis stromelysin was also detected on the lamina propria in regions of mucosal loss, and seems to be associated with the connective tissue changes that precede mucosal loss.

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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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