Gut Microbiota Influence on Kidney Disease Progression
Summary
Gut microbiota play a central role in modulating systemic immunity, metabolic homeostasis and the integrity of the gut barrier, all of which intersect in the progression of kidney disease. Under healthy conditions, a balanced microbial community ferments dietary polymers to produce beneficial metabolites such as short-chain fatty acids (SCFAs), which exert anti-inflammatory effects and maintain epithelial barrier function. Conversely, dysbiosis—characterised by reduced microbial diversity and overgrowth of pathobionts—can lead to increased permeability of the intestinal barrier and the translocation of bacterial components or outer membrane vesicles (OMVs) into circulation. These microbial products act on renal cells either directly, by triggering inflammatory cascades through caspase or toll-like receptor pathways, or indirectly, by altering levels of uraemic toxins such as indoxyl sulfate and p-cresyl sulfate. Such disturbances promote oxidative stress, fibrosis and tubular injury, thereby accelerating both acute and chronic kidney damage. Emerging evidence points to the gut–kidney axis as a modifiable target for therapeutic intervention, with strategies ranging from dietary modulation and prebiotic supplementation to manipulation of specific G protein-coupled receptors (GPRs) and histone deacetylase (HDAC) signalling pathways.
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Gut Microbiota Influence on Kidney Disease Progression publication trend
The graph below shows the total number of articles in gut microbiota influence on kidney disease progression across all publications each year (not limited to Nature Index journals).
Technical terms
Dysbiosis: Disruption of the normal gut microbial community structure, leading to an imbalance of commensal and pathogenic species.
Short-chain fatty acids (SCFAs): Microbial metabolites—principally acetate, propionate and butyrate—produced by fermentation of dietary fibre in the colon.
Outer membrane vesicles (OMVs): Nanoscale particles released by Gram-negative bacteria that carry bioactive molecules such as lipopolysaccharides and proteins.
G protein-coupled receptors (GPRs): Cell surface receptors (e.g. GPR41, GPR43, GPR109A) that sense microbial metabolites and transduce anti-inflammatory signals.
Uraemic toxins: Metabolic waste products derived from gut microbiota (e.g. indoxyl sulfate, p-cresyl sulfate) that accumulate in renal impairment and exacerbate inflammation.
Leaky gut barrier: Increased intestinal permeability allowing translocation of bacteria and microbial products into the systemic circulation.
References
- Outer membrane vesicles derived from gut microbiota mediate tubulointerstitial inflammation: a potential new mechanism for diabetic kidney disease. Theranostics (2023).
- Short‐Chain Fatty Acids Ameliorate Diabetic Nephropathy via GPR43‐Mediated Inhibition of Oxidative Stress and NF‐κB Signaling. Oxidative Medicine and Cellular Longevity (2020).
- Fiber Derived Microbial Metabolites Prevent Acute Kidney Injury Through G-Protein Coupled Receptors and HDAC Inhibition. Frontiers in Cell and Developmental Biology (2021).
- The Immunomodulatory Effect of the Gut Microbiota in Kidney Disease. Journal of Immunology Research (2021).
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