Premium
Oxidative stress and metabolism in animal model of colitis induced by dextran sulfate sodium
Author(s) -
Damiani Carlos R,
Benetton César A F,
Stoffel Cristhopher,
Bardini Katrine C,
Cardoso Vilson H,
Di Giunta Gabriela,
Pinho Ricardo A,
DalPizzol Felipe,
Streck Emilio L
Publication year - 2007
Publication title -
journal of gastroenterology and hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.214
H-Index - 130
eISSN - 1440-1746
pISSN - 0815-9319
DOI - 10.1111/j.1440-1746.2007.04890.x
Subject(s) - colitis , ulcerative colitis , medicine , oxidative stress , inflammatory bowel disease , deferoxamine , immune system , immunology , dextran , pathophysiology , reactive oxygen species , pharmacology , biochemistry , chemistry , disease
Background and Aim: Ulcerative colitis is a chronic inflammatory disease of the gastrointestinal tract. Its etiology remains unclear, but it appears to result from a dysregulated immune response, with infiltration of phagocytic leukocytes into the mucosal interstitium. The production and release of reactive oxygen species by immune cells seems to play a crucial role in physiopathology of colitis. The aim of this work was to evaluate the effects of N‐acetylcysteine (NAC) and deferoxamine (DFX) in the treatment of colitis induced by dextran sulfate sodium (DSS). Methods: The effects of NAC and DRX on rats with DSS‐induced colitis were determined by measuring intestinal parameters of oxidative stress and mitochondrial function, inflammatory response and bowel histopathological alterations. Results: DSS increased white blood cells count and NAC and DFX did not prevent this effect. However, DSS increased mitochondrial respiratory chain complex IV in colon of rats and NAC and DFX prevented this alteration. In addition, thiobarbituric acid reactive substances were increased in colon of DSS‐treated rats. NAC and DFX, when taken together, prevented this effect. Complex II and succinate dehydrogenase were not affected by DSS, as protein carbonyl content. Conclusions: It is speculated that NAC and DFX might be useful for treatment of colitis, but further research is necessary to clarify these effects.