Dendrobium officinale alleviates high-fat diet-induced nonalcoholic steatohepatitis by modulating gut microbiota

Frontiers in Cellular and Infection Microbiology

Cellular and Infection Microbiology

Enrui Xia¹  Gege Tian¹  Shunzhen Zhang¹  Wenhui Chen²  Wei Wang² 

[1] College of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, China;The Key Laboratory of Microcosmic Syndrome Differentiation, Education Department of Yunnan, Yunnan University of Chinese Medicine, Kunming, China;The Key Laboratory of Microcosmic Syndrome Differentiation, Education Department of Yunnan, Yunnan University of Chinese Medicine, Kunming, China;College of Basic Medicine, Yunnan University of Chinese Medicine, Kunming, China;

关键词: dendrobium officinale;    nonalcoholic steatohepatitis;    gut microbiota;    lipopolysaccharide;    intestinal permeability;    liver inflammation;    traditional chinese medicine;   

DOI  :  10.3389/fcimb.2023.1078447

 received in 2022-10-24, accepted in 2023-01-30,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionThe gut microbiota plays an important role in the development of nonalcoholic steatohepatitis (NASH). This study investigated the preventive effect of Dendrobium officinale (DO), including whether its effect was related to the gut microbiota, intestinal permeability and liver inflammation.MethodsA NASH model was established in rats using a high-fat diet (HFD) and gavage with different doses of DO or Atorvastatin Calcium (AT) for 10 weeks. Body weight and body mass index along with liver appearance, weight, index, pathology, and biochemistry were measured to assess the preventive effects of DO on NASH rats. Changes in the gut microbiota were analyzed by 16S rRNA sequencing, and intestinal permeability and liver inflammation were determined to explore the mechanism by which DO treatment prevented NASH.ResultsPathological and biochemical indexes showed that DO was able to protect rats against HFD-induced hepatic steatosis and inflammation. Results of 16S rRNA sequencing showed that Proteobacteria, Romboutsia, Turicibacter, Lachnoclostridium, Blautia, Ruminococcus_torques_group, Sutterella, Escherichia-Shigella, Prevotella, Alistipes, and Lactobacillus_acidophilus differed significantly at the phylum, genus, and species levels. DO treatment modulated the diversity, richness, and evenness of gut microbiota, downregulated the abundance of the Gram-negative bacteria Proteobacteria, Sutterella, and Escherichia-Shigella, and reduced gut-derived lipopolysaccharide (LPS) levels. DO also restored expression of the tight junction proteins, zona occludens-1 (ZO-1), claudin-1, and occludin in the intestine and ameliorated the increased intestinal permeability caused by HFD, gut microbiota such as Turicibacter, Ruminococcus, Escherichia-Shigella, and Sutterella, and LPS. Lower intestinal permeability reduced LPS delivery to the liver, thus inhibiting TLR4 expression and nuclear factor-kappaB (NF-κB) nuclear translocation, improving liver inflammation.DiscussionThese results suggest that DO may alleviate NASH by regulating the gut microbiota, intestinal permeability, and liver inflammation.

【 授权许可】

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Copyright © 2023 Tian, Wang, Xia, Chen and Zhang