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Antioxidant effects of metronidazole in colonic tissue

M A Pélissier1, P Marteau, P Pochart

  • 1Laboratoire de Biologie, EA-3199, Conservatoire National des Arts et Métiers, 2 rue Conté, 75003 Paris, France. pelissie@cnam.fr

Digestive Diseases and Sciences
|December 8, 2006
PubMed

Insights

Metronidazole (MTZ) demonstrates antioxidant effects by reducing oxidative protein damage in the colon. This study provides the first evidence of MTZ

Area of Science:

  • Biochemistry
  • Pharmacology
  • Gastroenterology

Background:

  • Reactive oxygen species (ROS) contribute to tissue injury in inflammatory bowel diseases (IBD).
  • Metronidazole (MTZ) may possess antioxidant properties beyond its antibiotic effects in IBD treatment.
  • Oxidative stress biomarkers include protein carbonyls, malondialdehyde, and glutathione levels.

Purpose of the Study:

  • To evaluate the antioxidant potential of metronidazole (MTZ) on oxidative damage biomarkers in rat gastrointestinal tissues and liver.
  • To investigate the effect of MTZ on protein carbonyls, malondialdehyde, and glutathione levels under physiological conditions.

Main Methods:

  • Controlled study involving MTZ-treated and control rats.
  • Measurement of protein carbonyls, malondialdehyde, and glutathione levels in the small intestine, large intestine (colon), and liver.
  • Assessment of oxidative damage and antioxidant defense under physiological conditions.

Main Results:

  • Basal levels of protein carbonyls and malondialdehyde were significantly higher in the colon than in the small intestine.
  • MTZ significantly reduced oxidative protein damage (protein carbonyls) in the colon.
  • MTZ did not cause any adverse side effects on liver biomarkers.

Conclusions:

  • Metronidazole exhibits a significant antioxidant effect on oxidative protein damage in the colon.
  • This study provides the first evidence of MTZ's antioxidant activity on colonic protein damage under physiological conditions.
  • MTZ's efficacy in certain IBD cases may be partly attributed to its antioxidant properties.

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