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High Density Lipoprotein from Egg Yolk (EYHDL) Improves Dyslipidemia by Mediating Fatty Acids Metabolism in High Fat Diet-induced Obese Mice

  • Yu, Zhihui (National R&D Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University) ;
  • Mao, Changyi (National R&D Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University) ;
  • Fu, Xing (National R&D Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University) ;
  • Ma, Meihu (National R&D Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University)
  • Received : 2018.07.31
  • Accepted : 2018.09.17
  • Published : 2019.04.30

Abstract

We investigated the effect of high density lipoprotein from egg yolk (EYHDL) on serum, hepatic and fecal lipid and fatty acids (FAs) levels and on gene expression involved in FAs metabolism. Male KM mice were fed either normal diet (ND; n=20), high fat diet (HFD; n=20), or high fat diet containing EYHDL (EYHDL; 0.6 mg/g, every day by oral gavage, n=20) for 100 days. At the end of the experiment, the effects of treatments on biochemical parameters, FAs profiles and involved gene expression were analyzed. Our results revealed that EYHDL markedly suppressed the body weight gain, accumulation of abdominal fat tissues, serum concentrations of LDL-cholesterol (LDL-C) and triglycerides, hepatic triglycerides and cholesterol accumulation, while increased serum concentration of HDL-cholesterol (HDL-C). EYHDL intake also increased total cholesterol (TC) excretions compared with HFD group. Moreover, it alleviated the severity of fatty liver and improved glucose and insulin tolerance compared with HFD. More importantly, EYHDL partially normalized FAs profiles in serum, liver and fecaces and neutralized the HFD-induced upregulation of SREBP-1c, Acaca, Fasn, GPAT and Scd1. In conclusion, our findings indicate that EYHDL may have the potential to improve metabolic disturbances that occur in HFD mice and can be considered as an appropriate dietary recommendation for the treatment of metabolic syndrome (MetS).

Keywords

high density lipoprotein from egg yolk (EYHDL);lipid profiles;fatty acids;mRNA expression;obese mice

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