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- W2083551878 abstract "Copper is one of the major metals causing environmental contamination. Previous studies showed that copper induced toxic effects in isolated perfused rat liver models and these effects were associated with lipid peroxidation. Here we investigated whether effects of copper (at concentrations of 0.01, 0.03, and 0.1 mM of Cu(2+) in Krebs-Henseleit buffer perfusing the isolated rat liver for 60 min), were associated with biliary epithelial cell injury, as well as protein oxidation and oxidative DNA damage. The highest concentration of copper in perfusate (0.1 mM) did not allow complete evaluation of all parameters because it blocked portal flow within 30 min of perfusion, indicating severe microcirculatory disturbances. Further, copper decreased secretion of bile and it increased lactate dehydrogenase, aspartate transaminase, and alanine transaminase leakage into perfusate as well as liver weight in a dose-dependent manner. Biliary gamma-glutamyltransferase, an index of biliary epithelial cell integrity increased similarly at 0.01 and 0.03 mM copper concentrations in perfusate. Compared to controls, 0.01 and 0.03 mM concentrations of copper increased the amount of thiobarbituric acid reacting substances, a marker of lipid peroxidation, tissue protein carbonyl groups, an index of protein oxidation, and 8-oxo-7,8-dihydro-2'-deoxyguanosine, a marker of oxidative DNA damage. The results suggest that toxic effects of copper in the isolated perfused rat liver may involve biliary epithelial cells and they are associated with lipid peroxidation, protein oxidation, and oxidative DNA damage." @default.
- W2083551878 created "2016-06-24" @default.
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- W2083551878 date "2007-01-01" @default.
- W2083551878 modified "2023-09-26" @default.
- W2083551878 title "Copper impairs biliary epithelial cells and induces protein oxidation and oxidative DNA damage in the isolated perfused rat liver" @default.
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- W2083551878 doi "https://doi.org/10.1016/j.etp.2006.09.001" @default.
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