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ABSTRACT: Objectives
To study the characteristics of intestinal microbiota at different stages of Mycobacterium tuberculosis infection.Methods
Fecal samples of 19 active tuberculosis (ATB) patients, 21 latent tuberculosis infection (LTBI) individuals, and 20 healthy controls (HC) were collected. Gut microbiota of all the participants were analyzed by 16S rDNA sequencing. Clinical information of ATB patients was also collected and analyzed.Results
Both ATB and LTBI groups showed significant decreases in microbial diversity and decline of Clostridia. For ATB patients, bacteria within phylum Proteobacteria increased. While for LTBI individuals, genera Prevotella and Rosburia enriched. The abundance of Faecalibacterium, Clostridia and Gammaproteobacteria has the potential to diagnose ATB, with the area under the curve (AUC) of 0.808, 0.784 and 0.717. And Prevotella and Rosburia has the potential to diagnose LTBI, with the AUC of 0.689 and 0.689. Notably, in ATB patients, the relative abundance of Blautia was negatively correlated with the proportions of peripheral T cells and CD8+T cells. And serum direct bilirubin was positively correlated with Bacteroidales, while negatively correlated with Clostridiales in ATB patients.Conclusions
The specifically changed bacteria are promising markers for ATB and LTBI diagnosis. Some gut bacteria contribute to anti-MTB immunity through interactions with T cells and bilirubin.
SUBMITTER: Huang Y
PROVIDER: S-EPMC10692819 | biostudies-literature | 2023 Nov
REPOSITORIES: biostudies-literature
Huang Yuan Y Tang Jinhua J Cai Zheng Z Qi Yun Y Jiang Shen S Ma Tingting T Yue Ying Y Huang Fang F Yang Han H Ma Yueyun Y
Heliyon 20231111 11
<h4>Objectives</h4>To study the characteristics of intestinal microbiota at different stages of <i>Mycobacterium tuberculosis</i> infection.<h4>Methods</h4>Fecal samples of 19 active tuberculosis (ATB) patients, 21 latent tuberculosis infection (LTBI) individuals, and 20 healthy controls (HC) were collected. Gut microbiota of all the participants were analyzed by 16S rDNA sequencing. Clinical information of ATB patients was also collected and analyzed.<h4>Results</h4>Both ATB and LTBI groups sho ...[more]