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- W2912479035 abstract "Destructive glucose and lipid metabolism in the liver is a crucial characteristic of type 2 diabetes mellitus (T2DM), eventually leading to insulin resistance and subsequent hyperglycemia and hyperlipidemia. Vaccarin is an active flavonoid glycoside associated with various biological functions, but its effects on glucose and lipid metabolic disorder in T2DM are still unclear. In this study, glucosamine (GlcN) and free fatty acids (FFAs, oleate/palmitate, 2:1 ratio) were applied to mimic insulin resistance and lipid deposition in HepG2 cells, respectively. Type 2 diabetic mice were induced using a high-fat diet (HFD) together with streptozotocin (STZ). GlcN stimulation was found to upregulate glucose production and gluconeogenesis but downregulate glycogen synthesis and phosphorylation of adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) in HepG2 cells, abnormal changes that were reversed by vaccarin. Furthermore, lipid accumulation was enhanced, but AMPK was inactivated in FFAs-exposed HepG2 cells, issues that were rectified by vaccarin treatment. These ameliorative effects of vaccarin on insulin resistance and steatosis were eliminated by AMPK inhibitor Compound C. In type 2 diabetic mice, chronic vaccarin administration decreased fasting blood glucose and lipid levels in both serum and the liver, and improved insulin sensitivity and steatosis in the liver. Taken together, these results suggest that vaccarin attenuates insulin resistance and steatosis by activating the AMPK signaling pathway." @default.
- W2912479035 created "2019-02-21" @default.
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- W2912479035 date "2019-05-01" @default.
- W2912479035 modified "2023-10-05" @default.
- W2912479035 title "Vaccarin ameliorates insulin resistance and steatosis by activating the AMPK signaling pathway" @default.
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- W2912479035 doi "https://doi.org/10.1016/j.ejphar.2019.02.029" @default.
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