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Published in: Hepatology International 2/2022

01-04-2022 | Respiratory Microbiota | Original Article

Alterations of gut microbiome and metabolite profiles in choledocholithiasis concurrent with cholangitis

Authors: Zhiyuan Hao, Kegong Tao, Kaiming Wu, Yuanyuan Luo, Yiting Lu, Binbin Li, Peimei Shi, Peiqin Wang, Xin Zeng, Yong Lin

Published in: Hepatology International | Issue 2/2022

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Abstract

Background and aims

Gut microbiota and their metabolic products might play important roles in regulating the pathogenesis of choledocholithiasis concurrent with cholangitis (CC). The aim of this study was to explore the characteristic gut dysbiosis, metabolite profiles and the possible roles in patients with CC.

Methods

A case–control study was carried out to analyze the alterations in the intestinal microbiota and their metabolites in patients with CC (n = 25) compared with healthy controls (HCs) (n = 25) by metagenomic sequencing to define the gut microbiota community and liquid chromatography/mass spectrometry (LC/MS) analysis to characterize the metabolite profiles.

Results

Significantly reduced Shannon diversity index (p = 0.043) and differential overall fecal microbiota community in CCs were observed. Twelve dominant altered species were identified and analyzed (LDA score > 3.0, p < 0.05) (Q value < 0.05), including unclassified_f_Enterobacteriaceae, Escherichia_coli, Roseburia_faecis and Eubacterium rectale. Moreover, the levels of KEGG pathways related to biofilm formation of Escherichia coli, lipopolysaccharide (LPS) biosynthesis, and the metabolism of propanoate and glutathione in CCs were significantly altered. Finally, 47 markedly changed metabolites (VIP > 1.0 and p < 0.05), including low level of kynurenic acid (KYNA) and high concentration of N-palmitoylsphingosine involving tryptophan metabolism and sphingolipid signaling pathways, were identified to validate aberrant metabolic patterns in CCs, and multiple correlated metabolic modules involving bile inflammation were altered in CCs.

Conclusion

Our study provides novel insights into compositional and functional alterations in the gut microbiome and metabolite profiles in CC and the underlying mechanisms between gut microbiota and bile inflammation.
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Literature
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Metadata
Title
Alterations of gut microbiome and metabolite profiles in choledocholithiasis concurrent with cholangitis
Authors
Zhiyuan Hao
Kegong Tao
Kaiming Wu
Yuanyuan Luo
Yiting Lu
Binbin Li
Peimei Shi
Peiqin Wang
Xin Zeng
Yong Lin
Publication date
01-04-2022
Publisher
Springer India
Published in
Hepatology International / Issue 2/2022
Print ISSN: 1936-0533
Electronic ISSN: 1936-0541
DOI
https://doi.org/10.1007/s12072-021-10231-5

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