Studies on peroxisomes of colonic mucosa in Crohn's disease - PubMed (original) (raw)

. 1994 Oct;39(10):2177-85.

doi: 10.1007/BF02090368.

Affiliations

Studies on peroxisomes of colonic mucosa in Crohn's disease

I Aimone-Gastin et al. Dig Dis Sci. 1994 Oct.

Abstract

The etiology and pathogenesis of Crohn's disease, a chronic inflammatory bowel pathology, have not been elucidated yet. In particular, the behavior of peroxisomes in inflamed colonic mucosa has not been investigated despite their important role in cellular oxidative metabolism. Using cytochemistry at the ultrastructural level, we have observed these catalase-positive organelles. In addition, biochemical analyses have revealed the specific activities of catalase and cyanide-insensitive acyl-CoA oxidase. Mucosal biopsy specimens from inflamed and noninflamed areas of Crohn's patients were compared to control biopsies. We found that Crohn's disease was marked by an important diminution in the peroxisomal frequency per cell unit area. If catalase activity was not affected by this pathology, cyanide-insensitive acyl-CoA oxidase, an enzyme of the peroxisomal beta-oxidation system, was found diminished in inflamed and in noninflamed areas. In conclusion, our results showed that Crohn's disease is accompanied by peroxisomal modifications but the number and the enzyme activities of colonic peroxisomes are less deeply altered in Crohn's disease than during neoplasia. This fact suggests that a relation may exist between the degree of peroxisomal deficiency and the clinical severity of colonic disease.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Mol Cell Biochem. 1988 Oct;83(2):187-94 - PubMed
    1. Surg Gynecol Obstet. 1991 Nov;173(5):343-9 - PubMed
    1. Gut. 1984 Apr;25(4):337-40 - PubMed
    1. Gastroenterology. 1985 Feb;88(2):580-7 - PubMed
    1. Gastroenterology. 1978 Oct;75(4):638-40 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources