Abstract
Ischemia/reperfusion (I/R) injury must be overcome in order to succeed in small intestinal transplantation. Reactive oxygen species (ROS) are generated by I/R, and they induce lipid peroxidation which is one of the causes of mucosal lesion. We previously reported the protection effects of antioxidants to I/R injury in the in vitro study. In the present study, we examined the inhibitive effect of antioxidants on intestinal I/R injury in the in vivo study. Intestinal ischemia was induced in Wistar/ST rats using the spring scale and the surgical suture for 1 h, followed by reperfusion for 1 h. We used 4,5-dihydroxy-1,3-benzene-disulfonic acid (Tiron), astaxanthin (ATX) and epigallocatechin gallate (EGCG) as antioxidants. The inhibitive effects on mucosal lesion, opening of TJ and decrease in protein expression level of P-gp by in vivo intestinal I/R were admitted by three kinds of antioxidant. Tiron and EGCG inhibited P-gp function but ATX did not. Therefore, for the use of P-gp substrate like immunosuppressants after the intestinal transplantation, ATX, which does not inhibit P-gp is considered to be effective for intestinal I/R injury.
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The authors thank Mr. Kazuki Hosoya for technical assistance.
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Takizawa, Y., Kitazato, T., Kishimoto, H. et al. Effects of antioxidants on drug absorption in in vivo intestinal ischemia/reperfusion. Eur J Drug Metab Pharmacokinet 35, 89–95 (2011). https://doi.org/10.1007/s13318-010-0020-y
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DOI: https://doi.org/10.1007/s13318-010-0020-y