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Updated: Aug 6, 2026
06:05
Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins
Published on: September 30, 2014
Bacterioides fragilis: production and sensitivity to bacteriocins
A Papastathopoulou1, E Bezirtzoglou, N J Legakis
1Microbiology Laboratory, Agia Sophia Children's Hospital, Goudi Athens, Greece.
Anaerobe
|April 1, 1997
Summary
Bacteriocin analysis of Bacteroides fragilis reveals high sensitivity and production capabilities among clinical isolates. This suggests bacteriocins can be a valuable tool for tracking bacterial infections and understanding their spread.
Area of Science:
- Microbiology
- Epidemiology
- Bacteriology
Background:
- Bacteriocin production and sensitivity are established epidemiological tools in bacterial species.
- Limited research exists on bacteriocins from Bacteroides fragilis, a common clinical anaerobe.
Purpose of the Study:
- To investigate bacteriocin production and sensitivity in clinical isolates of Bacteroides fragilis.
- To assess the potential of bacteriocins as an epidemiological tool for this species.
Main Methods:
- Thirty-two clinical isolates of Bacteroides fragilis were cultured anaerobically on agar plates.
- Isolates were tested for bacteriocin production and screened for sensitivity to various bacteriocins.
Main Results:
- 94% of strains showed sensitivity to at least one bacteriocin; 34.4% were sensitive to three or more.
- 94% of strains inhibited at least one other strain; 30% inhibited three or more.
- One strain exhibited broad activity, inhibiting 17 other strains.
Conclusions:
- Bacteroides fragilis clinical isolates display significant bacteriocin sensitivity and production potential.
- Bacteriocin profiling offers a promising, simple method for epidemiological studies of Bacteroides fragilis.
- Geographic variations in bacteriocin types warrant further investigation.
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