In people with advanced liver cirrhosis, an overgrowth of Candida fungi is commonly found alongside bacterial populations dominated by Enterococcus, and this combination is associated with a higher...
Mechanism
Synthesis from 1 study
Antibiotics wipe out helpful gut bacteria, letting harmful ones like Enterococcus and Candida take over. This weakens the gut lining, allowing microbes and their parts to leak into the blood, which triggers a strong but confusing immune response that makes it harder for the body to fight off fungal...
Most probable mechanism
When antibiotics kill off many good gut bacteria, it lets harmful bacteria like Enterococcus take over and removes natural checks on fungi like Candida. Without enough good bacteria to keep the gut lining strong, it becomes leaky, letting bacterial and fungal parts escape into the bloodstream. This triggers a strong immune response that weakens the body’s ability to fight off infections, making fungal infections more likely.
Broad-spectrum antibiotic use reduces overall bacterial diversity and abundance, selectively enriching Enterococcus species while depleting short-chain fatty acid-producing commensals
Depletion of short-chain fatty acid-producing bacteria reduces energy supply to intestinal epithelial cells, weakening tight junctions and increasing intestinal permeability
Loss of bacterial competition and antifungal metabolites allows Candida species to proliferate and dominate the fungal community
Increased intestinal permeability enables translocation of bacterial components (e.g., LPS, peptidoglycan) and fungal components (e.g., β-glucans) into the portal circulation
Translocated microbial components activate liver and systemic immune cells via pattern recognition receptors, triggering sustained release of pro-inflammatory cytokines and macrophage activation markers
Chronic systemic inflammation impairs immune surveillance and promotes immune exhaustion, reducing the ability to contain fungal pathogens and increasing susceptibility to invasive fungal infections
Evidence from Studies
Supporting (1)
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