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Open AccessArticle

MDG-1, a Potential Regulator of PPARα and PPARγ, Ameliorates Dyslipidemia in Mice

by Xu Wang 1, Linlin Shi 1, Sun Joyce 2, Yuan Wang 1,* and Yi Feng 1,*
1
Engineering Research Center of Modern Preparation Technology of TCM, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
2
Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2017, 18(9), 1930; https://doi.org/10.3390/ijms18091930
Received: 5 June 2017 / Revised: 15 July 2017 / Accepted: 20 July 2017 / Published: 8 September 2017
Hyperlipidemia is a serious epidemic disease caused by lipid metabolism disorder, which is harmful to human health. MDG-1, a β-d-fructan polysaccharide extracted from Ophiopogon japonicus, has been shown to improve abnormal blood lipid levels and alleviate diabetes. However, the underlying mechanism on hyperlipidemia is largely unknown. In this study, male C57BL/6 mice were randomly separated into three groups, respectively: low-fat diet (Con), high-fat diet (HFD), and high-fat diet plus 5‰ MDG-1 (HFD + MDG-1). Body weight was measured and the serum lipid levels were analyzed. Using gene microarray, various core pathways, together with levels of gene expression within hepatocytes, were analyzed. RT-PCR was used to confirm the identity of the differentially expressed genes. MDG-1 could prevent obesity in HFD-induced mice and improve abnormal serum lipids. Besides, MDG-1 could regulate hyperlipidemia symptoms, specifically, and decrease fasting blood glucose, improve glucose tolerance, and ameliorate insulin resistance. According to results from gene microarray, most of the identified pathways were involved in the digestion and absorption of fat, biosynthesis, and catabolism of fatty acids as well as the secretion and biological synthesis of bile acids. Furthermore, MDG-1 may act upon peroxisome proliferator-activated receptors (PPAR) α and γ, activating PPARα whilst inhibiting PPARγ, thus having a potent hypolipidemic effect. View Full-Text
Keywords: MDG-1; hyperlipidemia; gene microarray; PPAR MDG-1; hyperlipidemia; gene microarray; PPAR
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Wang, X.; Shi, L.; Joyce, S.; Wang, Y.; Feng, Y. MDG-1, a Potential Regulator of PPARα and PPARγ, Ameliorates Dyslipidemia in Mice. Int. J. Mol. Sci. 2017, 18, 1930.

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