Premium
Protective effect of sulfhydryl‐containing antioxidants against ischemia/reperfusion injury of prepubertal rat intestine
Author(s) -
Tunc Turan,
Öter Sükrü,
Güven Ahmet,
Topal Turgut,
Kul Mustafa,
Korkmaz Ahmet,
Öngürü Önder,
Sarici Ümit
Publication year - 2009
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.1440-1746.2008.05673.x
Subject(s) - malondialdehyde , glutathione peroxidase , medicine , superior mesenteric artery , superoxide dismutase , ischemia , reperfusion injury , glutathione , pathophysiology , pharmacology , oxidative stress , endocrinology , gastroenterology , biochemistry , chemistry , enzyme
Background and Aim: Reactive oxygen species generated during reperfusion of the tissue are known to play an important role in the basic pathophysiology of ischemia/reperfusion (I/R) injury. The aim of this study was to investigate and compare the protective effects of three sulfide‐based antioxidants, N ‐acetylcysteine (NAC), erdosteine (ERD), and α‐lipoic acid (LA), on I/R injury of the small intestine tissue. Methods: Forty male Sprague–Dawley rats weighing between 100–150 g were divided into five groups ( n = 8 for each): control (sham operated), I/R, I/R + NAC, I/R + ERD, and I/R + LA. Intestinal ischemia was provided by occluding the superior mesenteric artery via a special microvascular clamp; ischemia for 30 min and reperfusion for 3 days were carried out. Ileal specimens were obtained to determine the tissue levels of malondialdehyde (MDA), protein carbonyl contents (PCO), superoxide dismutase (SOD), and glutathione peroxidase (GPx) activities and histological changes. Results: The rats subjected to intestinal I/R exhibited an increase in tissue MDA and PCO; the levels could hardly be ameliorated in the treatment groups. SOD and GPx activities were significantly decreased in the I/R group, whereas their reduction was less expressed in the treatment groups. Additionally, the histopathological injury scores of the disulfide‐treated groups were lower than those of the I/R group. Conclusion: All of the sulfhydryl‐containing antioxidants used in this study exhibited a significant role in attenuating intestinal I/R injury; however, the outcome of the LA‐treated group was significantly marked than that of the others.