Effects of Antarctic krill oil on lipid and glucose metabolism in C57BL/6J mice fed with high fat diet

Lipids in Health and Disease

Research

Yuanfa Liu¹  Peirang Cao¹  Dewei Sun¹  Rong Feng¹  Liang Zhang¹  Hongjian Chen¹ 

[1] State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, 214122, Wuxi, Jiangsu, People’s Republic of China;

关键词: Antarctic Krill oil;    EPA and DHA;    C57BL/6J mice;    Lipid metabolism;    Glucose tolerance;   

DOI  :  10.1186/s12944-017-0601-8

 received in 2017-07-05, accepted in 2017-10-30,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundObesity and other metabolic diseases have become epidemic which greatly affect human health. Diets with healthy nutrition are efficient means to prevent this epidemic occurrence. Novel food resources and process technology were needed for these purpose. In this study, Antarctic krill oil (KO) extracted from a dry krill by a procedure of hot pump dehydration in combined with freezing-drying was used to investigate health effect in animals including the growth, lipid and glucose metabolism.MethodsC57BL/6J mice were fed with a lard based high fat (HF) diet and substituted with KO for a period of 12 weeks in comparison with low fat normal control (NC) diet. Mice body weight and food consumption were recorded. Serum lipid metabolism - of C57BL/6J mice serum was measured. A glucose tolerance tests (GTTs) and pathology analysis of mice were performed at the end of the experiment.ResultsThe KO fed mice had less body weight gain, less fat accumulation in tissue such as adipose and liver. Dyslipidemia induced by high fat diet was partially improved by KO feeding with significant reduction of serum low density lipoprotein-cholesterol (LDL-C) content. Furthermore, KO feeding also improved glucose metabolism in C57BL/6J mice including a glucose tolerance of about 22% vs. 32% of AUC (area under the curve) for KO vs HF diet and the fast blood glucose level of 8.5 mmol/L, 9.8 mmol/L and 9.3 mmol/L for NC, HF and KO diet groups, respectively. In addition, KO feeding also reduced oxidative damage in liver with a decrease of malondialdehyde (MDA) content and increase of superoxide dismutase (SOD) content.ConclusionThis study provided evidence of the beneficial effects of KO on animal health from the processed technology, particularly on lipid and glucose metabolism. This study confirmed that as the Antarctic krill was extracted with a procedure of efficient energy, it might make it possible for Krill oil to be available for food industry.

【 授权许可】

CC BY   
© The Author(s). 2017