Effects of NS lactobacillus strains on lipid metabolism of rats fed a high-cholesterol diet

	Effects of NS lactobacillus strains on lipid metabolism of rats fed a high-cholesterol diet
	Hu, Xu1 ; Wang, Tao1 ; Li, Wei1,2 ; Jin, Feng1 ; Wang, Li 3; Jin, F (reprint author), Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China.
心理所单位排序	1
摘要	Background: Elevated serum cholesterol level is generally considered to be a risk factor for the development of cardiovascular diseases which seriously threaten human health. The cholesterol-lowering effects of lactic acid bacteria have recently become an area of great interest and controversy for many researchers. In this study, we investigated the effects of two NS lactobacillus strains, Lactobacillus plantarum NS5 and Lactobacillus delbrueckii subsp. bulgaricus NS12, on lipid metabolism of rats fed a high cholesterol diet. Methods: Thirty-two SD rats were assigned to four groups and fed either a normal or a high-cholesterol diet. The NS lactobacillus treated groups received the high-cholesterol diet supplemented with Lactobacillus plantarum NS5 or Lactobacillus delbrueckii subsp. bulgaricus NS12 in drinking water. The rats were sacrificed after a 6-week feeding period. Body weights, visceral organ and fat weights, serum and liver cholesterol and lipid levels, intestinal microbiota and liver mRNA expression levels related to cholesterol metabolism were analyzed. Liver lipid deposition and adipocyte size were evaluated histologically. Results: Compared with rats fed a high cholesterol diet, serum total cholesterol, low-density lipoprotein cholesterol, apolipoprotein B and free fatty acids levels were decreased and apolipoprotein A-I level was increased in NS5 or NS12 strain treated rats, and with no significant change in high-density lipoprotein cholesterol level. Liver cholesterol and triglyceride levels were also significantly decreased in NS lactobacillus strains treated groups. Meanwhile, the NS lactobacillus strains obviously alleviated hepatic injuries, decreased liver lipid deposition and reduced adipocyte size of high cholesterol diet fed rats. NS lactobacillus strains restored the changes in intestinal microbiota compositions, such as the increase in Bacteroides and the decrease in Clostridium. NS lactobacillus strains also regulated the mRNA expression levels of liver enzymes related to cholesterol metabolism, including the down regulation of acyl-CoA: cholesterol acyltransferase (ACAT) and the upregulation of cholesterol 7 alpha-hydroxylase (CYP7A1). Conclusion: This study suggested that the two NS lactobacillus strains may affect lipid metabolism and have cholesterol-lowering effects in rats fed a high cholesterol diet.
关键词	NS lactobacillus Cholesterol Apolipoprotein Intestinal microbiota mRNA Expression
学科领域	Physiological Psychology/biological Psychology
	2013
语种	英语
发表期刊	LIPIDS IN HEALTH AND DISEASE
ISSN	1476-511X
卷号	12
期刊论文类型	期刊论文
URL	查看原文
收录类别	SCI
项目简介	The study was granted by NS Bio Japan and NS Health Biotechnology Beijing.
WOS关键词	FERMENTED MILK PRODUCT ; SERUM-CHOLESTEROL ; GUT MICROBIOTA ; MALE-VOLUNTEERS ; BLOOD-LIPIDS ; ACIDOPHILUS ; DISEASE ; MICE ; OBESITY ; RISK
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
WOS研究方向	Biochemistry & Molecular Biology ; Nutrition & Dietetics
WOS类目	Biochemistry & Molecular Biology ; Nutrition & Dietetics
WOS记录号	WOS:000319579100001
资助机构	NS Bio Japan ; NS Health Biotechnology Beijing
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/10766
专题	中国科学院心理健康重点实验室
通讯作者	Jin, F (reprint author), Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Hangzhou Normal Univ, Sch Med, Hangzhou, Zhejiang, Peoples R China
第一作者单位	中国科学院心理健康重点实验室
推荐引用方式 GB/T 7714	Hu, Xu,Wang, Tao,Li, Wei,et al. Effects of NS lactobacillus strains on lipid metabolism of rats fed a high-cholesterol diet[J]. LIPIDS IN HEALTH AND DISEASE,2013,12.
APA	Hu, Xu,Wang, Tao,Li, Wei,Jin, Feng,Wang, Li,&Jin, F .(2013).Effects of NS lactobacillus strains on lipid metabolism of rats fed a high-cholesterol diet.LIPIDS IN HEALTH AND DISEASE,12.
MLA	Hu, Xu,et al."Effects of NS lactobacillus strains on lipid metabolism of rats fed a high-cholesterol diet".LIPIDS IN HEALTH AND DISEASE 12(2013).

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