Role of autophagy in a model of obesity: A long ‑term high fat diet induces cardiac dysfunction.

Role of autophagy in a model of obesity: A long‑term high fat diet induces cardiac dysfunction. Mol Med Rep. 2018 Jul 23;: Authors: Che Y, Wang ZP, Yuan Y, Zhang N, Jin YG, Wan CX, Tang QZ Abstract Obesity may induce end‑organ damage through metabolic syndrome, and autophagy serves a vital role in the pathogenesis of metabolic syndrome. The purpose of the present study was to define the roles of autophagy and mitophagy in high fat diet (HFD)‑induced cardiomyopathy. Male, 8 week‑old C57BL/6 mice were fed either a HFD (60% kcal) or a diet of normal chow (NC; 10% kcal) for 42 weeks. Glucose tolerance tests were performed during the feeding regimes. Blood samples were collected for assaying serum triglyceride with the glycerol‑3‑phosphate oxidase phenol and aminophenazone (PAP) method and total cholesterol was tested with the cholesterol oxidase‑PAP method. Myocardial function was assessed using echocardiography and hemodynamic analyses. Western blot analysis was employed to evaluate endoplasmic reticulum stress (ERS), autophagy and mitochondrial function. Electron microscopy was used to assess the number of lipid droplets and the degree of autophagy within the myocardium. The body weight and adipose tissue weight of mice fed the HFD were increased compared with the NC mice. The serum levels of blood glucose, total cholesterol and triglyceride were significantly increased following 42 weeks of HFD feeding. The results of...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research