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Lycium ruthenicum Anthocyanins Attenuate High‐Fat Diet‐Induced Colonic Barrier Dysfunction and Inflammation in Mice by Modulating the Gut Microbiota
Author(s) -
Tian Baoming,
Zhao Jianhua,
Zhang Min,
Chen Zhifei,
Ma Qingyu,
Liu Huicui,
Nie Chenxi,
Zhang Ziqi,
An Wei,
Li Juxiu
Publication year - 2021
Publication title -
molecular nutrition and food research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.495
H-Index - 131
eISSN - 1613-4133
pISSN - 1613-4125
DOI - 10.1002/mnfr.202000745
Subject(s) - akkermansia , gut flora , inflammation , lipopolysaccharide , tlr4 , intestinal permeability , bacteroides , tight junction , chemistry , endocrinology , biology , microbiology and biotechnology , medicine , immunology , biochemistry , bacteria , genetics
Scope Gut barrier dysfunction and inflammation originating from a dysbiotic gut microbiota (GM) are strongly associated with a high‐fat diet (HFD). Anthocyanins from Lycium ruthenicum (ACs) show antiobesity effects through modulating the GM. However, the mechanism linking the antiobesity effects of ACs and GM modulation remains obscure. Methods and results To investigate the ameliorative effects of ACs on colonic barrier dysfunction and inflammation, mice are fed an HFD with or without ACs at doses of 50, 100, and 200 mg kg −1 for 12 weeks. AC supplementation reduced weight gain, enriched short‐chain fatty acid (SCFA)‐producing bacteria (e.g., Ruminococcaceae, Muribaculaceae, Akkermansia, Ruminococcaceae_ UCG‐014 , and Bacteroides ) and SCFA content, depleted endotoxin‐producing bacteria (e.g., Helicobacter and Desulfovibrionaceae), and decreased endotoxin (i.e., lipopolysaccharide) levels. SCFAs substantially activated G protein‐coupled receptors (GPRs), inhibited histone deacetylases (HDAC), increased intestinal tight junction mRNA and protein expression levels, reduced intestinal permeability, and protected intestinal barrier integrity in HFD‐induced mice. These effects mitigate intestinal inflammation by inhibiting the LPS/NF‐κB/TLR4 pathway. Conclusion These data indicates that ACs can mitigate colonic barrier dysfunction and inflammation, induce SCFA production and inhibit endotoxin production by modulating the GM in HFD‐fed mice. This finding provides a clue for understanding the antiobesity effects of ACs.