Effects of iron deprivation or chelation on DNA damage in experimental colitis

M. Barollo, R. D'Incà, M. Scarpa, V. Medici, R. Cardin, W. Fries, I. Agriman, G. C. Sturniolo

Research output: Contribution to journalArticlepeer-review

Abstract

Background and aims: In inflammatory bowel diseases iron contributes to the formation of DNA adducts through the production of hydroxyl radicals. The aim of our study was to evaluate the effects of dietary or pharmacological iron deprivation in an experimental model of colitis in the rat and its potential protective effect against DNA damage. Methods: Colitis was induced in rats by intracolonic instillation of dinitrobenzene sulphonic acid. Rats were assigned to an iron-deprived diet or to desferrioxamine preceding the induction of colitis. The severity of colitis was assessed by the presence of bloody diarrhea, colonic macroscopic damage score, body-weight variations and the amount of DNA colonic adducts. Hepatic and colonic iron concentrations were measured. Results: Treated rats experienced less diarrhea and did not lose weight in comparison to untreated animals. The macroscopic damage score was significantly reduced in the iron-deprived diet for the 5-week group (P=0.03). Liver and colonic iron levels were significantly more reduced in the iron-deprived groups than in the standard diet group (P

Original languageEnglish
Pages (from-to)461-466
Number of pages6
JournalInternational Journal of Colorectal Disease
Volume19
Issue number5
Publication statusPublished - Sep 2004

Keywords

  • Desferrioxamine
  • DNA damage
  • Experimental colitis
  • Iron

ASJC Scopus subject areas

  • Gastroenterology

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