Polygonatum kingianum Coll. et Hemsl water extracts combined with intermittent fasting alleviates high fat diet-induced obesity and liver injury by modulating gut microbiome

  • WEI Yucheng ,
  • YANG Minmin ,
  • SHI Lin ,
  • LIU Tianqi ,
  • YAN Tao ,
  • ZHANG Yan ,
  • LIANG Yifan ,
  • ZHOU Lanqi ,
  • ZOU Jiale ,
  • ZHANG Huafeng
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  • 1(School of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China)
    2(National Engineering Laboratory for Resources Development of Endangered Crude Drugs in Northwest China, Shaanxi Normal University, Xi’an 710119, China)
    3(International Joint Research Center of Shaanxi Province for Food and Health Sciences, Shaanxi Normal University, Xi’an 710119, China)
    4(Key Laboratory of Characteristic Fruit Storage and Preservation, Shaanxi Normal University, Xi’an 710119, China)

Received date: 2021-10-05

  Revised date: 2021-11-01

  Online published: 2022-08-03

Abstract

The aim of this study was to investigate the effect of water extract from Polygonatum kingianum Coll. et Hemsl (PK) combined with intermittent fasting (IF) on preventing abnormal weight gain and hepatic steatosis in mice with high fat diet by modulating gut microbiota. PK contained 69.71% total polysaccharide and 5.4% total polyphenols. A total of 325 metabolites was detected by using liquid chromatograph-mass spectrometer based metabolomics, mainly including prebiotic oligosaccharides (e.g. raffinose, stachyose and isomaltose), amino acids (e.g. γ-aminobutyric acid, arginine, tryptophan and serine), and other compounds showing health-promoting effects, (e.g. betaine). The 8-week-old (n=60) healthy male C57BL/6J mice were randomly assigned into 6 groups: normal chow (NC), NC with oral administration of PK (NC+PK), NC with oral administration of PK and intermittent fasting (NC+PK+IF), high fat diet (HF), HF+PK and HF+PK+IF, respectively. During the intervention of 8 weeks, PK and PK+IF effectively prevented high-fat-induced abnormal weight gain, improved glucose tolerance and superoxide dismutase activity in liver, reduced serum triglycerides, and alleviated HF-induced liver cell degeneration and abnormal lipid accumulation. Moreover, PK significantly increased relative abundance of Bacteroidetes and decreased the ratio of Firmicutes to Bacteroidetes. Both PK and PK+IF intervention inhibited HF-induced upregulation in Clostridium, Escherichia-Shigella, Acinetobacter, and Ruminococcus at genus level, of which have been associated with obesity, excessive lipid accumulation and liver damage; conversely, PK and PK+IF elevated short-chain fatty acid-promoting genera, i.e. Alloprevotella, Prevotella, Butyrivibrio, and Bifidobacterium. PK-induced improvements in body weight, glucose tolerance, lipid metabolism and oxidative stress were strongly correlated with PK-altered gut microbiota. In conclusion, P. kingianum water extract rich in various probiotic substances and could beneficially prevent HF-induced obesity and liver damage by modulating gut microbiota.

Cite this article

WEI Yucheng , YANG Minmin , SHI Lin , LIU Tianqi , YAN Tao , ZHANG Yan , LIANG Yifan , ZHOU Lanqi , ZOU Jiale , ZHANG Huafeng . Polygonatum kingianum Coll. et Hemsl water extracts combined with intermittent fasting alleviates high fat diet-induced obesity and liver injury by modulating gut microbiome[J]. Food and Fermentation Industries, 2022 , 48(13) : 91 -102 . DOI: 10.13995/j.cnki.11-1802/ts.029607

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