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Issue 10, 2015
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Protective effects of tartary buckwheat flavonoids on high TMAO diet-induced vascular dysfunction and liver injury in mice

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Abstract

This study was performed to investigate the liver and vascular changes in high trimethylamine-N-oxide (TMAO) diet-fed mice, and the possible vasoprotective and hepatoprotective effects of purified tartary buckwheat flavonoid fraction (TBF). HPLC analysis revealed that the content of rutin and quercetin presented in TBF was 53.6% and 37.2%, respectively, accounting for 90.8% of TBF. Mice fed 1.5% TMAO in drinking water for 8 weeks significantly displayed vascular dysfunction and liver damage (p < 0.01). The administration of TBF at 400 and 800 mg per kg bw significantly elevated plasma NO and eNOS concentrations, and serum HDL-C and PGI2 levels, and lowered serum TC, TG, LDL-C, ET-1 and TX-A2 levels of TMAO-fed mice. TBF also reduced serum AST and ALT activities, and hepatic NEFA and MDA levels, and increased the hepatic GSH-Px and SOD activities in TMAO-fed mice, which were consistent with the observations of the histological alterations of the liver. This report firstly showed that dietary TMAO might cause liver damage and TBF prevented TMAO-induced vascular dysfunction and hepatic injury.

Graphical abstract: Protective effects of tartary buckwheat flavonoids on high TMAO diet-induced vascular dysfunction and liver injury in mice

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Article information


Submitted
20 May 2015
Accepted
21 Jul 2015
First published
24 Jul 2015

Food Funct., 2015,6, 3359-3372
Article type
Paper
Author version available

Protective effects of tartary buckwheat flavonoids on high TMAO diet-induced vascular dysfunction and liver injury in mice

Y. Hu, Y. Zhao, L. Yuan and X. Yang, Food Funct., 2015, 6, 3359
DOI: 10.1039/C5FO00581G

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