Hepatocellular oxidant stress following intestinal ischemia-reperfusion injury. J Surg Res 1991 Dec;51(6):467-71
Date
12/01/1991Pubmed ID
1943082DOI
10.1016/0022-4804(91)90166-jScopus ID
2-s2.0-0026327286 (requires institutional sign-in at Scopus site) 47 CitationsAbstract
Reperfusion of ischemic intestine results in acute liver dysfunction characterized by hepatocellular enzyme release into plasma, reduction in bile flow rate, and neutrophil sequestration within the liver. The pathophysiology underlying this acute hepatic injury is unknown. This study was undertaken to determine whether oxidants are associated with the hepatic injury and to determine the relative value of several indirect methods of assessing oxidant exposure in vivo. Rats were subjected to a standardized intestinal ischemia-reperfusion injury. Hepatic tissue was assayed for lipid peroxidation products and oxidized and reduced glutathione. There was no change in hepatic tissue total glutathione following intestinal ischemia-reperfusion injury. Oxidized glutathione (GSSG) increased significantly following 30 and 60 min of reperfusion. There was no increase in any of the products of lipid peroxidation associated with this injury. An increase in GSSG within hepatic tissue during intestinal reperfusion suggests exposure of hepatocytes to an oxidant stress. The lack of a significant increase in products of lipid peroxidation suggests that the oxidant stress is of insufficient magnitude to result in irreversible injury to hepatocyte cell membranes. These data also suggest that the measurement of tissue GSSG may be a more sensitive indicator of oxidant stress than measurement of products of lipid peroxidation.
Author List
Turnage RH, Bagnasco J, Berger J, Guice KS, Oldham KT, Hinshaw DBMESH terms used to index this publication - Major topics in bold
AnimalsGlutathione
Glutathione Disulfide
Intestines
Ischemia
Lipid Peroxides
Liver
Male
Oxidants
Rats
Reperfusion Injury
