Characterization of yellow-pigmented enterococci from severe human infections

Area of Science:

• Microbiology
• Infectious Diseases
• Clinical Science

Background:

• Enterococci are common causes of nosocomial infections, particularly in healthcare settings.
• Yellow-pigmented enterococci are infrequently reported, with limited understanding of their clinical significance.
• Enterococcus casseliflavus is a known species, but novel related strains require characterization.

Purpose of the Study:

• To isolate and characterize yellow-pigmented enterococci from surgical patients.
• To determine the biochemical properties, antibiotic susceptibility, and genetic relatedness of these strains.
• To assess the potential of these isolates as a cause of nosocomial infections.

Main Methods:

• Bacterial isolation from clinical samples of surgical patients.
• Biochemical testing for identification and characterization.
• Antibiotic susceptibility testing using standard microbiological methods.
• Plasmid DNA profiling to assess genetic relatedness.

Main Results:

• Four strains of yellow-pigmented enterococci were successfully isolated.
• The isolates showed significant homology in biochemical profiles, antibiotic resistance patterns, and plasmid DNA.
• The strains exhibited characteristics similar to Enterococcus casseliflavus.

Conclusions:

• Yellow-pigmented enterococci strains were identified in surgical patients.
• These strains are genetically related and possess similar biochemical and antibiotic resistance profiles.
• Yellow-pigmented enterococci represent a potential emerging pathogen in hospital-acquired infections within surgical units.