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Published in: Gut Pathogens 1/2022

Open Access 01-12-2022 | Escherichia Coli | Research

Gut microbiota in the early stage of Crohn’s disease has unique characteristics

Authors: Xianzong Ma, Xiaojuan Lu, Wenyu Zhang, Lang Yang, Dezhi Wang, Junfeng Xu, Yan Jia, Xin Wang, Hui Xie, Shu Li, Mingjie Zhang, Yuqi He, Peng Jin, Jianqiu Sheng

Published in: Gut Pathogens | Issue 1/2022

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Abstract

Background

Emerging evidence suggests that gut microbiota plays a predominant role in Crohn’s disease (CD). However, the microbiome alterations in the early stage of CD patients still remain unclear. The present study aimed to identify dysbacteriosis in patients with early CD and explore specific gut bacteria related to the progression of CD.

Methods

This study was nested within a longitudinal prospective Chinese CD cohort, and it included 18 early CD patients, 22 advanced CD patients and 30 healthy controls. The microbiota communities were investigated using high-throughput Illumina HiSeq sequencing targeting the V3–V4 region of 16S ribosomal DNA (rDNA) gene. The relationship between the gut microbiota and clinical characteristics of CD was analyzed.

Results

Differential microbiota compositions were observed in CD samples (including early and advanced CD samples) and healthy controls samples. Notably, Lachnospiracea_incertae_sedis and Parabacteroides were enriched in the early CD patients, Escherichia/Shigella, Enterococcus and Proteus were enriched in the advanced CD patients, and Roseburia, Gemmiger, Coprococcus, Ruminococcus 2, Butyricicoccus, Dorea, Fusicatenibacter, Anaerostipes, Clostridium IV were enriched in the healthy controls [LDA score (log10) > 2]. Furthermore, Kruskal–Wallis Rank sum test results showed that Blautia, Clostridium IV, Coprococcus, Dorea, Fusicatenibacter continued to significantly decrease in early and advanced CD patients, and Escherichia/Shigella and Proteus continued to significantly increase compared with healthy controls (P < 0.05). The PICRUSt analysis identified 16 remarkably different metabolic pathways [LDA score (log10) > 2]. Some genera were significantly correlated with various clinical parameters, such as fecal calprotectin, erythrocyte sedimentation rate, C-reactive protein, gland reduce, goblet cells decreased, clinical symptoms (P < 0.05).

Conclusions

Dysbacteriosis occurs in the early stage of CD and is associated with the progression of CD. This data provides a foundation that furthers the understanding of the role of gut microbiota in CD’s pathogenesis.
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Metadata
Title
Gut microbiota in the early stage of Crohn’s disease has unique characteristics
Authors
Xianzong Ma
Xiaojuan Lu
Wenyu Zhang
Lang Yang
Dezhi Wang
Junfeng Xu
Yan Jia
Xin Wang
Hui Xie
Shu Li
Mingjie Zhang
Yuqi He
Peng Jin
Jianqiu Sheng
Publication date
01-12-2022
Publisher
BioMed Central
Published in
Gut Pathogens / Issue 1/2022
Electronic ISSN: 1757-4749
DOI
https://doi.org/10.1186/s13099-022-00521-0

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