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. 2013 Sep 13;19:762-6.
doi: 10.12659/MSM.889068.

The Role of Oxidants and Reactive Nitrogen Species in Irritable Bowel Syndrome: A Potential Etiological Explanation

Free PMC article

The Role of Oxidants and Reactive Nitrogen Species in Irritable Bowel Syndrome: A Potential Etiological Explanation

Rafet Mete et al. Med Sci Monit. .
Free PMC article


Background: The aim of this study was to evaluate the plasma concentrations of malondialdehyde (MDA) and nitric oxide (NO) and the plasma activities of oxidant and antioxidant enzymes in patients with IBS.

Material/methods: A total of 36 patients with IBS were included in the study. Thirty-five healthy subjects were selected to form the control group. Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), xanthine oxidase (XO), adenosine deaminase (AD) activities, and malondialdehyde (MDA) and nitric oxide (NO) concentrations were studied in the serum samples of all patients and controls.

Results: Plasma XO and AD activities, and MDA and NO concentrations were significantly higher in IBS patients than in controls. The SOD, CAT, and GSH-Px activities in the serum of patients with IBS were significantly lower than that of controls.

Conclusions: These results suggest that lipid peroxidation and alterations in the oxidant-antioxidant enzymatic system may play a role in the pathogenesis of IBS. Increased lipid peroxidation in IBS may be related to an increase in NO level and XO activity and a decrease in antioxidant enzymes activities. In addition, increased AD activity may have a role in immunological changes of IBS patients.

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    1. El-Salhy M. Irritable bowel syndrome: Diagnosis and pathogenesis. World J Gastroenterol. 2012;18(37):5151–63. - PMC - PubMed
    1. Agréus L, Svärdsudd K, Nyrén O, Tibblin G. Irritable bowel syndrome and dyspepsia in the general population: overlap and lack of stability over time. Gastroenterology. 1995;109:671–80. - PubMed
    1. Matricon J, Meleine M, Gelot A, et al. Review article: associations between immune activation, intestinal permeability and the irritable bowel syndrome. Aliment Pharmacol Ther. 2012;36(11–12):1009–31. - PubMed
    1. Mazur M, Furgała A, Jabłoński K, et al. Autonomic nervous system activity in constipation-predominant irritable bowel syndrome patients. Med Sci Monit. 2012;18(8):CR493–99. - PMC - PubMed
    1. Zhu H, Li YR. Oxidative stress and redox signaling mechanisms of inflammatory bowel disease: updated experimental and clinical evidence. Exp Biol Med (Maywood) 2012;237(5):474–80. - PubMed