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• W2890615970 abstract "Childhood consumption of added sugars, such as sucrose, has been associated to increased risk of metabolic syndrome (MetS) and nonalcoholic fatty liver disease (NAFLD). Although the mechanisms underlying NAFLD onset are incompletely defined, recent evidence has proposed a role for the endoplasmic reticulum (ER) stress. Thus, the present study sought to investigate the metabolic outcomes of high-sucrose intake on weaned Swiss mice fed a 25% sucrose diet for 30, 60 and 90 days in comparison to regular chow-fed controls. High-sucrose feeding promoted progressive metabolic and oxidative disturbances, starting from fasting and fed hyperglycemia, hyperinsulinemia, glucose intolerance and increased adiposity at 30-days; passing by insulin resistance, hypertriglyceridemia and NAFLD onset at 60 days; until late hepatic oxidative damage at 90 days. In parallel, assessment of transcriptional and/or translational levels of de novo lipogenesis (DNL) and ER stress markers showed up-regulation of both fatty acid synthesis (ChREBP and SCD1) and oxidation (PPARα and CPT-1α), as well as overexpression of unfolded protein response sensors (IRE1α, PERK and ATF6), chaperones (GRP78 and PDIA1) and antioxidant defense (NRF2) genes at 30 days. At 60 days, fatty acid oxidation genes were down-regulated, and ER stress switched over toward a proapoptotic pattern via up-regulation of BAK protein and CHOP gene levels. Finally, down-regulation of both NRF2 and CPT-1α protein levels led to late up-regulation of SREBP-1c and exponential raise of fatty acids synthesis. In conclusion, our study originally demonstrates a temporal relationship between DNL and ER stress pathways toward MetS and NAFLD development on weaned rats fed a high-sucrose diet." @default.
• W2890615970 created "2018-09-27" @default.
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• W2890615970 date "2018-12-01" @default.
• W2890615970 modified "2023-10-05" @default.
• W2890615970 title "Long-term exposure to high-sucrose diet down-regulates hepatic endoplasmic reticulum-stress adaptive pathways and potentiates de novo lipogenesis in weaned male mice" @default.
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• W2890615970 doi "https://doi.org/10.1016/j.jnutbio.2018.09.007" @default.
• W2890615970 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30300835" @default.
• W2890615970 hasPublicationYear "2018" @default.
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