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The hypolipidemic effects of peptides prepared from Cicer arietinum in ovariectomized rats and HepG2 cells
Author(s) -
Shi Wen,
Hou Tao,
Liu Weiwei,
Guo Danjun,
He Hui
Publication year - 2018
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.9218
Subject(s) - endocrinology , medicine , estrogen receptor , triglyceride , cholesterol , lipid metabolism , hyperlipidemia , estrogen , ovariectomized rat , chemistry , adipose tissue , liver x receptor , blood lipids , biology , biochemistry , nuclear receptor , transcription factor , diabetes mellitus , cancer , breast cancer , gene
BACKGROUND The lack of estrogen in postmenopausal women is a key risk factor for disorders of lipid metabolism and for obesity. Except in cases where estrogen replacement therapy (ERT) is being used, chickpea peptides (ChPs) may be a potential candidate for treating hyperlipidemia. RESULTS In ovariectomized rats model, ChPs were found to decrease body weight, adipose tissue size, total cholesterol (TC), total triglyceride (TG), low‐density lipoprotein cholesterol (LDL‐C), and the atherogenic index (AI) in serum and liver TC and TG. Serum high‐density lipoprotein cholesterol (HDL‐C), bile acids in liver and feces, fecal TC and TG were observed to increase significantly ( P < 0.05). ChPs play a role in inhibiting the activities of fatty acid synthetase (FAS) and HMG‐CoA reductase (HMGR). The expression of peroxisome proliferator‐activated receptors (PPAR) γ and sterol regulatory element‐binding protein (SREBP)‐1c were downregulated and the expression of liver X receptor (LXR) α , estrogen receptor(ER) α and ER β were upregulated by ChPs. In HepG2 cell experiments, the cellular TC levels decreased and the uptake of NBD‐cholesterol increased significantly after treatment with Mw < 1 kDa and Mw < 5 kDa ChPs fractions. Val‐Phe‐Val‐Arg‐Asn (VFVRN) could inhibit TC biosynthesis by decreasing the expression of HMGR. CONCLUSION We demonstrated that ChPs could effectively regulate lipid metabolism disorders and restrain obesity caused by estrogen deficiency. Val‐Phe‐Val‐Arg‐Asn identified from ChPs could reduce the expression of HMGR to inhibit cholesterol biosynthesis. © 2018 Society of Chemical Industry