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

Yu Tang Tung, Hsiao Ling Chen, Hsin Shan Wu, Mei Hsuan Ho, Kowit Yu Chong, Chuan Mu Chen

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


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.

Original languageEnglish
Article number1700505
JournalMolecular Nutrition and Food Research
Issue number3
Publication statusPublished - Feb 1 2018


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

ASJC Scopus subject areas

  • Biotechnology
  • Food Science


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