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- W2616394018 abstract "The role of FGF21 plays in the development and progression of diabetic cardiomyopathy (DCM) has not been addressed. Here we demonstrated that type 1 diabetes decreased FGF21 levels in the blood, but up-regulated cardiac fgf21 expression about 40 fold at 2 months and 3-1.5 fold at 4 and 6 months after diabetes, which indicated a cardiac specific FGF21 adaptive up-regulation. To define the critical role of FGF21 in DCM, type 1 diabetes was induced in FGF21 knock out (FGF21KO) mice. At 1, 2 and 4 months after diabetes onset, no significant differences between FGF21KO and wild type (WT) diabetic mice in blood glucose and triglyceride levels were observed. But FGF21KO diabetic mice showed earlier and more severe cardiac dysfunction, remodeling and oxidative stress, as well as greater increase in cardiac lipid accumulation than WT diabetic mice. Mechanistically, FGF21 reduced palmitate-induced cardiac cell death, which was accompanied by up-regulation of cardiac Erk1/2, p38 MAPK and AMPK phosphorylation. Inhibition of each kinase with its inhibitor and/ or siRNA revealed that FGF21 prevents palmitate-induced cardiac cell death via up-regulating the Erk1/2-dependent p38 MAPK/AMPK signaling pathway. In vivo administration of FGF21, but not FGF21 plus ERK1/2 inhibitor, to diabetic mice significantly prevented cardiac cell death and reduced inactivation of Erk1/2, p38 MAPK and AMPK, and prevented cardiac remodeling and dysfunction at late-stage. Our results demonstrate that cardiac FGF21 decompensation may contribute to the development of DCM and FGF21 may be a therapeutic target for the treatment of diabetic cardiac damage via activation of Erk1/2-P38 MAPK-AMPK signaling." @default.
- W2616394018 created "2017-05-26" @default.
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- W2616394018 date "2015-07-17" @default.
- W2616394018 modified "2023-09-22" @default.
- W2616394018 title "Abstract 26: Fibroblast Growth Factor 21 Prevents Diabetic Cardiomyopathy by Attenuating Cardiac Lipotoxicity via Erk1/2-dependent Signaling Pathway in Mice" @default.
- W2616394018 doi "https://doi.org/10.1161/res.117.suppl_1.26" @default.
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