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Changes in gut microbial community upon chronic kidney disease.
Wu Liu1, Jiaqi Huang2,3, Tong Liu4
1Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
Plos One
|March 23, 2023
Summary
Chronic kidney disease (CKD) is linked to gut microbiota changes, including altered bacterial diversity and increased harmful bacteria like Ralstonia. These shifts impact metabolism and kidney function, suggesting new therapeutic targets.
Area of Science:
- Microbiology
- Nephrology
- Bioinformatics
Background:
- Chronic kidney disease (CKD) incidence and mortality are rising globally.
- The gut microbiota's role in CKD pathogenesis is increasingly recognized.
- Understanding CKD's metabolic mechanisms through gut microbiota analysis is crucial.
Purpose of the Study:
- To analyze gut microbiota alterations in CKD patients compared to healthy controls.
- To investigate the association between specific gut bacteria and kidney function markers.
- To explore the functional metabolic pathways affected by gut dysbiosis in CKD.
Main Methods:
- Bioinformatic analysis of 315 gut microbiota samples from NCBI database.
- Diversity and Principal Coordinate Analysis (PCoA) for microbial community comparison.
- PICRUSt2 for functional gene prediction and pathway analysis.
Main Results:
- Significant differences in gut microbiota evenness and phylum-level composition between CKD and healthy control (HC) groups.
- Elevated Firmicutes/Bacteroidetes (F/B) ratio in CKD patients, indicating gut dysbiosis.
- Increased abundance of kidney-impairing bacteria (e.g., Ralstonia, Porphyromonas) negatively correlated with estimated glomerular filtration rate (eGFR).
- PICRUSt2 identified altered metabolic pathways, including Glycerophospholipid metabolism, in CKD patients.
Conclusions:
- Gut microbiota dysbiosis is a significant feature of CKD.
- Specific bacterial taxa and metabolic pathways are associated with CKD progression and impaired kidney function.
- Further research, including animal and metabolomics studies, is warranted to explore therapeutic interventions targeting the gut microbiota in CKD.
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