Single frequency intake of alpha-linolenic acid rich phytosterol esters attenuates atherosclerosis risk factors in hamsters fed a high fat diet

文献类型： 外文期刊

第一作者： Deng, Qianchun

作者： Deng, Qianchun;Yu, Xiao;Xu, Jiqu;Zheng, Mingming;Huang, Fenghong;Huang, Qingde;Deng, Qianchun;Yu, Xiao;Xu, Jiqu;Zheng, Mingming;Huang, Fenghong;Huang, Qingde;Kou, Xiuying;Kou, Xiuying;Wang, Lan

作者机构：

关键词： alpha-linolenic acid rich phytosterol esters;Dose and frequency;Lipid profile;Intestinal sterol transporters;alpha-linolenic acid metabolism

期刊名称：LIPIDS IN HEALTH AND DISEASE （ 影响因子：3.876； 五年影响因子：4.047 ）

ISSN： 1476-511X

年卷期： 2016 年 15 卷

页码：

收录情况： SCI

摘要： Background: Emerging evidence suggested phytosterol esters (PE) exhibited an advantage over naturally occurring phytosterols in reducing atherosclerosis risk factors due to improved fat solubility and compatibility. However, the effects of dietary patterns of PE on lipid-lowering activity were limited and inconsistent. This study aimed to explore the effects of dose and frequency of alpha-linolenic acid rich phytosterol esters (ALA-PE) on cholesterol and triglyceride metabolism markers focused on intestinal cholesterol absorption and bioconversion of ALA in liver. Methods: Dose-dependency study Male Syrian golden hamsters were fed high-fat diets (HFD) containing low, medium and high dose of ALA-PE (0.72 %, 2.13 % and 6.39 %) for 6 weeks. The high fat diet contained 89.5 % chow diet, 0.2 % cholesterol, 10 % lard and 0.3 % bile salt. Dose-frequency study Male Syrian golden hamsters were provided: (I) 0.4 mL/100 g peanut oil by gavage once a day; (II) 0.4 mL/100 g ALA-PE by gavage once a day; (III) 0.2 mL/100 g ALA-PE by gavage twice a day; (IV) 0.133 mL/100 g ALA-PE by gavage three times a day; (V) 0.1 mL/100 g ALA-PE by gavage four times a day for 6 weeks with a high-fat diet simultaneously. Results: ALA-PE dose-dependently lowered plasma total cholesterol (TC), triglyceride (TG) and low-density lipoprotein cholesterol (LDL-C) concentrations with a maximal decrease of 42 %, 59 % and 73 %, respectively (p < 0.05). Compared to HFD, TC, LDL-C and TG concentrations were significantly lower (p < 0.01) in hamsters consumed HFD plus ALA-PE for 1-4 times per day but there were not remarkable differences among different consumption frequencies. No significant changes in plasma antioxidant capacity and lipid peroxidation levels were observed among HFD and HFD plus different doses of ALA-PE groups. The contents of hepatic alpha-linolenic (ALA), docosapentaenoic (DPA) and docosahexaenoic (DHA) acids were dose-dependently increased in different ALA-PE groups compared to those in HFD group. The abundance of mRNA for intestinal sterol transporters Niemann-Pick C1-Like 1 (NPC1L1), ATP-binding cassette (ABC) transporters ABCG5 and ABCG8 indicated no significant differences among all groups. Conclusion: ALA-PE dose-dependently improved lipid profile in hamsters fed HFD independent of intestinal ABCG5, ABCG8 and NPC1L1, accompanying by increased conversion of ALA to DPA and DHA in liver. ALA-PE manifested "once a day" lipid-lowering efficacy, highlighting a promising preventive strategy for metabolic syndrome.

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