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- W2156221444 abstract "Hyperhomocysteinemia plays an important role in the development of hepatic steatosis, and studies indicate that homocysteine-lowering treatment inhibits the development of fatty liver.We evaluated the effects of L-serine on alcoholic fatty liver and homocysteine metabolism.In a binge ethanol study, male C57BL/6 mice were divided into 4 groups: control, ethanol + vehicle, and ethanol + 20 or 200 mg/kg L-serine. Mice were gavaged with ethanol (5 g/kg body weight) 3 times every 12 h with or without L-serine which was given twice 30 min before the last 2 ethanol doses. Control mice were fed isocaloric dextran-maltose. In a chronic ethanol study, male Wistar rats were divided into 3 groups: control, ethanol, and ethanol + L-serine. Rats were fed a standard Lieber-DeCarli ethanol diet (36% ethanol-derived calories) for 4 wk with or without dietary L-serine supplementation (1%; wt:vol) for the last 2 wk. In control rats, the ethanol-derived calories were replaced with dextran-maltose. The effects of L-serine were also tested in AML12 cells manipulated to have high homocysteine concentrations by silencing the genes involved in homocysteine metabolism.Binge ethanol treatment increased serum homocysteine and hepatic triglyceride (TG) concentrations by >5-fold vs. controls, which were attenuated in the 200-mg/kg L-serine treatment group by 60.0% and 47.5%, respectively, compared with the ethanol group. In the chronic ethanol study, L-serine also decreased hepatic neutral lipid accumulation by 63.3% compared with the ethanol group. L-serine increased glutathione and S-adenosylmethionine by 94.0% and 30.6%, respectively, compared with the ethanol group. Silencing betaine homocysteine methyltransferase, cystathionine β-synthase, or methionine increased intracellular homocysteine and TG concentrations by >2-fold, which was reversed by L-serine when L-serine-independent betaine homocysteine methyltransferase was knocked down.These results demonstrate that L-serine ameliorates alcoholic fatty liver by accelerating L-serine-dependent homocysteine metabolism." @default.
- W2156221444 created "2016-06-24" @default.
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- W2156221444 date "2015-02-01" @default.
- W2156221444 modified "2023-10-18" @default.
- W2156221444 title "L-Serine Supplementation Attenuates Alcoholic Fatty Liver by Enhancing Homocysteine Metabolism in Mice and Rats" @default.
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- W2156221444 doi "https://doi.org/10.3945/jn.114.199711" @default.
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