Abstract
The present study investigated the composition of water extract of Grifola frondosa (GFWE) and its regulatory effects on glycolipid metabolism and gut microbiota in rats. Structural characteristics of GFWE were detected by high performance liquid chromatography and ultra-high-performance liquid chromatography with mass spectrometry. The hypoglycemic and hypolipidemic activities of GFWE were obtained by inhibition of weight gain, recovery of serum glucose and lipid, and reverse of liver tissue damage. GFWE has up-regulated the relative mRNA and protein expression levels of adenine monophosphate activated protein kinase-α, peroxisome proliferator-activated receptors-α, and glucokinase, while down-regulated sterol regulatory element-binding transcription factor-1c and acetyl CoA carboxylase. Moreover, GFWE increased the abundances of caecal bacteria Oscillibacter and Barnesiella, which showed a significant negative correlation with serum glucose and lipid parameters. And GFWE enhanced the levels of total bile acids and short-chain fatty acids in the cecum. These results indicated that GFWE could be provided as a potential candidate to regulate glycolipid metabolism and gut microbiota.
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