Effects of dietary wheat bran arabinoxylans on cholesterol metabolism of hypercholesterolemic hamsters

被引:51
作者
Tong, Li-Tao [1 ]
Zhong, Kui [1 ]
Liu, Liya [1 ]
Qiu, Ju [2 ]
Guo, Lina [1 ]
Zhou, Xianrong [1 ]
Cao, Li [3 ,4 ]
Zhou, Sumei [1 ]
机构
[1] Chinese Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Lab Agroprod Proc, Minist Agr, Beijing 100193, Peoples R China
[2] Inst Food & Nutr Dev, Minist Agr, Beijing 100081, Peoples R China
[3] Chinese Acad Med Sci, Inst Med Plant Dev, Beijing 100193, Peoples R China
[4] Peking Union Med Coll, Beijing 100193, Peoples R China
基金
中国国家自然科学基金; 对外科技合作项目(国际科技项目);
关键词
Wheat bran arabinoxylans; Oat beta-glucan; Hypercholesterolemia; Fecal lipids; Short-chain fatty acids; Hamsters; MESSENGER-RNA EXPRESSION; OAT BETA-GLUCAN; FERMENTABLE FIBER; RATS; CONSUMPTION; IMPROVES; HEALTH; LIPIDS;
D O I
10.1016/j.carbpol.2014.05.061
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The aim of the present study is to investigate the effects of dietary wheat bran arabinoxylans (AXs) on cholesterol metabolism in hypercholesterolemic hamsters. The hamsters were divided into 3 groups and fed the experimental diets containing AXs or oat beta-glucan at a dose of 5 g/kg for 30 days. As the results, the AXs lowered plasma total cholesterol and LDL-cholesterol concentrations, and increased excretions of total lipids, cholesterol and bile acids, as well as oat beta-glucan. The AXs reduced the activity of 3-hydroxy-3-methyl glutaryl-coenzyme A (HMG-CoA) reductase, and increased the activity of cholesterol 7-alpha hydroxylase (CYP7A1) in liver. Moreover, the AXs increased propionate and the total short-chain fatty acids (SCFAs) concentrations. These results indicated that dietary AXs reduced the plasma total cholesterol and LDL-cholesterol concentrations by promoting the excretion of fecal lipids, regulating the activities of HMG-CoA reductase and CYP7A1, and increasing colonic SCFAs in hamsters. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1 / 5
页数:5
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