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• W2017005494 abstract "Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to cause small intestinal damage but the pathogenesis of this toxicity is not well established. Intestinal epithelial cells are thought to be affected by these drugs in the course of their absorption. These cells are of different types, viz. villus, middle and crypt cells. There is little information on which of these cells, if any, are particularly vulnerable to the effects of NSAIDs. This paper aimed to study the effects of indomethacin, an NSAID commonly used in toxicity studies, on different populations of enterocytes. Effects of the drug were assessed in terms of oxidative damage, mitotic activity, mitochondrial function and lipid composition in enterocytes isolated from the small intestine of rats that had been orally administered indomethacin. In addition, the effects of arginine and zinc in protecting against such changes were assessed. Cell viability, tetrazolium dye (MTT) reduction and oxygen uptake were significantly reduced in villus tip cells from rats dosed with the drug. Thymidine uptake was higher in the crypt cell fraction from these rats. Similarly, products of lipid peroxidation were elevated in the villus tip cells with a corresponding decrease in the level of the anti-oxidant, alpha-tocopherol. In isolated mitochondrial preparations from various enterocyte fractions, significant functional impairment and altered lipid composition were seen mainly in mitochondria from villus cells. Arginine and zinc pre-treatment were found to protect against these effects. These results suggest for the first time that the villus tip cells are more vulnerable to the damaging effects of indomethacin and that oxidative stress is possibly involved in this damage." @default.
• W2017005494 created "2016-06-24" @default.
• W2017005494 creator A5040284270 @default.
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• W2017005494 date "2002-07-01" @default.
• W2017005494 modified "2023-10-18" @default.
• W2017005494 title "Indomethacin-induced mitochondrial dysfunction and oxidative stress in villus enterocytes" @default.
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• W2017005494 doi "https://doi.org/10.1016/s0006-2952(02)01067-5" @default.
• W2017005494 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12123755" @default.
• W2017005494 hasPublicationYear "2002" @default.
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