Abstract
Pulmonary tuberculosis (PTB) is the main cause of infection-related mortality and the most common infectious disease that develops resistance to antibiotics. Gut microbiota and their associated metabolites are assumed to induce and influence the development of PTB. However, the alterations of gut microbiota and metabolites in TB patients is currently unclear. Fecal samples were collected from 13 PTB patients, 13 LTBI patients, and 13 healthy controls (HC). 16S rRNA sequencing and metabolomics were used to analyze the changes in the intestinal microbiota and the composition of fecal metabolites in groups. Our findings indicated that the α-diversity of the gut microbiota in patients with PTB and LTBI decreases compared to HC, and at the phylum level, the relative abundance of Firmicutes decreases and the relative abundance of Bacteroides increases. And six genera were notably enriched in PTB patients and four in LTBI patients. Metabolomic analysis showed alterations in metabolite levels, such as short-chain fatty acids and amino acids. we comprehensively explored the changes in the gut microbes and fecal metabolites in patients with PTB and LTBI from the perspective of the gut microbiota, which may provide potential diagnostic biomarkers and therapeutic targets for TB diagnosis and treatment.
Published Version
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