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- W2080932364 abstract "We recently observed that ethanol feeding impairs 10-formyltetrahydrofolate (10-FTHF) dehydrogenase (EC 1.5.1.6.) and 10-FTHF hydrolase activity in rats. In the present study, we explored the effects of folate deficiency or sufficiency combined with alcoholic intake on 10-FTHF and possible mechanisms by which chronic ethanol ingestion produces folate deficiency.Sprague-Dawley rats were fed either folate-sufficient (FS) or folate-deficient (FD) diets; with or without ethanol (E) for four weeks. Hepatic 10-FTHF dehydrogenase and hydrolase activity, plasma folate and homocysteine were measured at baseline and after feeding experimental diets.Liver weight increased slightly with either folate deficiency or ethanol consumption. In rats fed the folate-sufficient diet with ethanol (FSE), plasma folate was decreased slightly (p<0.05) and plasma homocysteine elevated compared to rats fed the FS diet without ethanol. Ethanol did not affect plasma folate and plasma homocysteine in FD rats. Red-blood cell (RBC) folate was increased similarly in rats by ethanol feeding (FSE and FDE>FS and FD). Feeding folate deficient or ethanol (FSE, FD and FDE) diets depressed hepatic activities of 10-FTHF dehydrogenase, which catalyzes the oxidative deformylation of 10-FTHF to tetrahydrofolate (THF) and carbon dioxide. Rats consuming the FDE diet had the lowest enzyme activities of the experimental groups, implying that folate deficiency and ethanol consumption each affect enzyme activity.We confirm that ethanol decreases hepatic 10-FTHF dehydrogenase activity and show that this decrease occurs irrespective of folate status. This shows that modulation of 10-FTHF is one possible mechanism by which ethanol intake decreases folate status and affects one-carbon metabolism." @default.
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- W2080932364 date "2005-12-01" @default.
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- W2080932364 title "Effects of Chronic Ethanol Ingestion and Folate Deficiency on the Activity of 10-Formyltetrahydrofolate Dehydrogenase in Rat Liver" @default.
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- W2080932364 doi "https://doi.org/10.1097/01.alc.0000191756.02856.a8" @default.
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