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Abstract Title:

Serum Ceramide Reduction by Blueberry Anthocyanin-Rich Extract Alleviates Insulin Resistance in Hyperlipidemia Mice.

Abstract Source:

J Agric Food Chem. 2020 Aug 5 ;68(31):8185-8194. Epub 2020 Jul 21. PMID: 32692177

Abstract Author(s):

Xu Si, Jinlong Tian, Chi Shu, Yuehua Wang, Ersheng Gong, Ye Zhang, Weijia Zhang, Huijun Cui, Bin Li

Article Affiliation:

Xu Si

Abstract:

Blueberry anthocyanin-rich extract (BAE) was supplemented to high-fat diet (HFD)-fed mice to investigate sphingolipid metabolism modulating factors involved in the attenuated hyperinsulinemia and hyperlipidemia. A BAE-containing diet effectively controlled food intake and liver weight and significantly attenuated insulin resistance triggered by a HFD. Higher BAE (200 mg/kg of body weight) administration performed more efficiently in the improvement of hepatic steatosis and adipocyte hypertrophy, together with distinct suppressions in serum triacylglycerol and cholesterol in total and species. Serum lipid compositions revealed 200 mg/kg of BAE supplementation remarkably suppressed ceramide accumulation. Consistently, genes encoding enzymes associated with sphingomyelin conversion and ceramidesynthesis were modulated toward a healthy direction for restrained sphingolipid accumulation. Further, the inhibited mRNA expressions of protein phosphatase 2A and protein kinase Cζ involved in blocking Akt phosphorylation connected the controlled ceramides with the restored insulin sensitivity.

Study Type : Animal Study

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