Summary
This laboratory study investigates the mechanisms triggering biofilm dispersion in Enterococcus faecalis, an important opportunistic pathogen. The authors demonstrate that dispersion is induced by nutrient step-change and intra-species signalling via cell-free supernatant, and that dispersed cells recover antibiotic sensitivity whilst maintaining adherence potential. The findings identify the epaOX glycosyltransferase and specific carbohydrate structures as key regulators of this process, with potential implications for antimicrobial treatment strategies.
Regional applicability
This is fundamental laboratory microbiology research on a bacterial pathogen of clinical significance. Findings are not geographically specific but have relevance to infection control and antimicrobial stewardship in any healthcare setting, including the United Kingdom.
Key measures
Biofilm dispersion kinetics, antibiotic sensitivity of biofilm versus planktonic cells, role of epaOX glycosyltransferase, effect of nutrient availability (tenfold step-change), cell-free supernatant composition (galactose and N-acetylgalactosamine), adherence capacity of dispersed cells
Outcomes reported
The study identified nutrient step-change and cell-free supernatant as triggers for biofilm dispersion in E. faecalis, and demonstrated that dispersed cells regain antibiotic sensitivity compared to biofilm cells. The glycosyltransferase epaOX was characterised as necessary for dispersion and adhesion, with specific carbohydrate supplementation able to restore function.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.