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- W2062742554 abstract "Ethanol withdrawal increases lipid peroxidation of the polyunsaturated fatty acid (PUFA) docosahexaenoate (22:6; n-3) in the CNS. To further define the role of oxidative damage of PUFAs during ethanol withdrawal, we measured the levels of glutathione adducts of 4-hydroxy-2-hexenal (GSHHE) and 4-hydroxy-2-nonenal (GSHNE) as biomarkers of brain lipid peroxidation of n-3 and n-6 PUFAs, respectively. In this study rats received an ethanol-containing diet for 6 weeks followed by withdrawal ranging from 0 to 7 days. GSHHE content was elevated (>350%) in the cerebral cortex after 2 days of withdrawal with no change in GSHNE. The levels of GSHHE were significantly greater (2- to 20-fold) than those of GSHNE in multiple brain regions. Experiments demonstrated that intoxication and withdrawal did not alter the enzymatic rate of formation of GSHHE or GSHNE, but the rate of formation of GSHHE was higher (approximately 50%) than that of GSHNE. These results indicate that selective oxidative damage to n-3 PUFAs occurs in the cerebral cortex as a result of ethanol withdrawal and that 4-hydroxy-2-hexenal is metabolized to the GSH adduct more efficiently than HNE." @default.
- W2062742554 created "2016-06-24" @default.
- W2062742554 creator A5042218587 @default.
- W2062742554 creator A5075757963 @default.
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- W2062742554 date "2010-02-01" @default.
- W2062742554 modified "2023-09-25" @default.
- W2062742554 title "Ethanol withdrawal increases glutathione adducts of 4-hydroxy-2-hexenal but not 4-hydroxyl-2-nonenal in the rat cerebral cortex" @default.
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- W2062742554 doi "https://doi.org/10.1016/j.freeradbiomed.2009.10.048" @default.
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