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Introduction: Intestinal ischemia/reperfusion (I/R) is a serious life-threatening clinical case. Overproduction of reactive oxygen species (ROS) associated with oxidative stress plays a key role in I/R pathophysiology.

Objective: The aim of this study is to evaluate dynamic thiol / disulfide hemostasis in intestinal I/R in rats.

Materials and Methods: 24 Winstar albino rats were divided into 3 groups (8 animals in each group: (1) sham (operation without ischemia), (2) ischemia (90 minutes ischemia), (3) ischemia/reperfusion (after ischemia for 30 minutes reperfusion for 60 minutes). At the end of the process, liver samples were evaluated pathologically. Also, in plasma samples, native thiol, disulphide and total thiol levels were measured.

Results: Native thiol levels in ischemia and I/R group were found to be significantly lower compared to the sham group (P<0.001). Disulfide levels in Ischemia group were found to be significantly higher compared to the sham group (P< 0.05). Disulfide / native thiol levels in ischemia and I/R group were found to be significantly higher compared to the sham group (P < 0.05). Disulfide / total thiol levels in both ischemia and I/R group were found to be significantly higher compared to the sham group (P< 0.05).

Conclusion: Balance of dynamic thiol/disulfide is a quite suitable indicator for evaluating oxidative stress which occurs as a result of intestinal I/R. As a result, measurement of dynamic thiol/disulfide balance with Erel method is fully automated and practical for evaluating oxidative environment which is formed with ischemia reperfusion.

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