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Liu, Z., Qin, H., Yang, Z., Xia, Y., Liu, W., Yang, J., Jiang, Y., Zhang, H., Yang, Z., Wang, Y. and Zheng, Q. (2011) Randomised Clinical Trial: The Effects of Perioperative Probiotic Treatment on Barrier Function and Post-Operative Infectious Complications in Colorectal Cancer Surgery—A Double-Blind Study. Alimentary Pharmacology & Therapeutics, 33, 50-63.

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• TITLE: Taurine Protects Gut Barrier Function and Prevents Endothelial Cell Injury Induced by Ischaemia-Reperfusion

  AUTHORS: Hong Chen, Gang Chen, Claire Condron

  KEYWORDS: Ischaemia, Reperfusion, Gut Barrier, Taurine, ROS, Calcium

  JOURNAL NAME: Food and Nutrition Sciences, Vol.8 No.6, June 29, 2017

  ABSTRACT: Purpose: Gut permeability and microvascular injury following ischaemia/reperfusion (IR) have been implicated in the systemic inflammatory response syndrome (SIRS) and multiple organ failure (MOF). Taurine (TAU), a sulfur-containing amino acid, is a powerful antioxidant and regulator of intracellular calcium and several studies have established that treatment with TAU protects cerebral, cardiac and testicular tissue from (IR) injury. This study investigates the protective effect of taurine in an experimental model of I/R-induced gut injury in rats. Methods: Sprague-Dawley rats were randomized into three groups: Control, I/R, TAU + I/R. TAU was given by gavage or intravenous injection before I/R. Ischaemia was induced by cross-clamping superior mesenteric and coeliac vascular pedicle for 20 - 30 min, followed by 60 - 180 min reperfusion. Gut permeability, blood flux, tissue oedema, leucocytes infiltration and eNOS expression were measured at 3 hrs following reperfusion using FD4. Leukocyte-endothelial interactions were determined by intra-vital microscopy during I/R. In vitro studies assessed the protective effect of TAU on endothelial cell function and survival. Results: Treatment with TAU significantly attenuated IR-induced gut hyper permeability, tissue oedema, leukocyte adhesion and infiltration. TAU also prevented the reduction in gut blood flow, leukocyte rolling velocity and eNOS expression induced by IR. TAU protects against I/R-induced endothelial cell injury by reduced anti-oxidant activity and modulation of eNOS expression and intracellular calcium fluxes. Conclusions: TAU protects the gut from intestinal barrier dysfunction induced by surgical I/R.