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Mol Nutr Food Res. 2018 Feb;62(3). doi: 10.1002/mnfr.201700505. Epub 2018 Jan 2.

Kefir Peptides Prevent Hyperlipidemia and Obesity in High-Fat-Diet-Induced Obese Rats via Lipid Metabolism Modulation.

Author information

1
Department of Life Sciences, Agricultural Biotechnology Center, National Chung Hsing University, Taichung, 402, Taiwan.
2
Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, 11031, Taiwan.
3
Department of Bioresources, Da-Yeh University, Changhwa, 515, Taiwan.
4
Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Tao-Yuan, 333, Taiwan.
5
Molecular Medicine Research Center, College of Medicine, Chang Gung University, Tao-Yuan, 333, Taiwan.
6
Rong Hsing Research Center for Translational Medicine and the iEGG Center, National Chung Hsing University, Taichung, 402, Taiwan.

Abstract

SCOPE:

Obesity has reached epidemic proportions worldwide. Obesity is a complex metabolic disorder that is linked to numerous serious health complications with high morbidity. The present study evaluated the effects of kefir peptides on high fat diet (HFD)-induced obesity in rats.

METHODS AND RESULTS:

Kefir peptides markedly improved obesity, including body weight gain, inflammatory reactions and the formation of adipose tissue fat deposits around the epididymis and kidney, and adipocyte size. Treating high fat diet (HFD)-induced obese rats with kefir peptides significantly reduced the fatty acid synthase protein and increased the p-acetyl-CoA carboxylase protein to block lipogenesis in the livers. Kefir peptides also increased fatty acid oxidation by increasing the protein expressions of phosphorylated AMP-activated protein kinase, peroxisome proliferator-activated receptor-α, and hepatic carnitine palmitoyltransferase-1 in the livers. In addition, administration of kefir peptides significantly decreased the inflammatory response (TNF-α, IL-1β, and TGF-β) to modulate oxidative damage.

CONCLUSION:

These results demonstrate that kefir peptides treatment improves obesity via inhibition of lipogenesis, modulation of oxidative damage, and stimulation of lipid oxidation. Therefore, kefir peptides may act as an anti-obesity agent to prevent body fat accumulation and obesity-related metabolic diseases.

KEYWORDS:

high fat diet (HFD); kefir peptides; lipid oxidative pathway; lipogenesis; obesity; oxidative damage

PMID:
29178253
DOI:
10.1002/mnfr.201700505
[Indexed for MEDLINE]

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