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- W2060474525 abstract "The pathogenic mechanism underlying alcoholic fatty liver (AFL) is not clear. Autophagy is a self-digestion process that is critical for the maintenance of cellular homeostasis and regulation of lipid metabolism. We investigated the role of autophagy and autophagic flux in hepatic injury induced by chronic ethanol feeding in mice. C57BL/6 mice were fed a Lieber-DeCarli ethanol diet (ED) to induce AFL or an isocaloric control diet for 6 weeks. Chloroquine (CQ, 10 mg/kg, intra-peritoneally [i.p.]) or rapamycin (Rapa, 5 mg/kg, i.p.) were administered during the last 2 weeks of the experimental period. Chronic ethanol feeding induced AFL with focal necrosis associated with increased levels of hepatic triglyceride. This phenomenon was aggravated by CQ, an inhibitor of autophagy, and attenuated by Rapa, an inducer of autophagy. Expression of microtubule-associated protein 1 light chain 3 (LC3)-II and sequestosome1/p62 significantly increased in the ED group. Moreover, accumulation of autophagosomes was observed by transmission electron microscopy in chronic ethanol-treated mice. Chronic ethanol consumption decreased protein expression of LC3 lipidation-related proteins Atg3 and Atg7, and the lysosomal proteins lysosome-associated membrane protein-2 and Rab7, and increased the protein expression of calpain 1 and phosphorylated mammalian target of rapamycin. Taken together, these findings suggest that chronic ethanol consumption leads to impairment of autophagic flux, which contributes to ethanol-induced liver injury." @default.
- W2060474525 created "2016-06-24" @default.
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- W2060474525 date "2014-11-01" @default.
- W2060474525 modified "2023-09-24" @default.
- W2060474525 title "Impairment of autophagosome-lysosome fusion contributes to chronic ethanol-induced liver injury" @default.
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- W2060474525 doi "https://doi.org/10.1016/j.alcohol.2014.08.006" @default.
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