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Related Experiment Videos

Plasmids in Staphylococcus hyicus.

W C Noble1, M Rahman, D H Lloyd

  • 1Institute of Dermatology, United Medical School, London, UK.

The Journal of Applied Bacteriology
|February 1, 1988
PubMed
Summary
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Antibiotic resistance in Staphylococcus hyicus and Staphylococcus chromogenes strains from pigs and cows was studied. Plasmids linked to tetracycline, erythromycin, and streptomycin resistance were found, similar to those in human Staphylococcus aureus.

Area of Science:

  • Veterinary Microbiology
  • Bacterial Genetics
  • Antimicrobial Resistance

Background:

  • Staphylococcus hyicus and Staphylococcus chromogenes are significant pathogens in livestock.
  • Understanding their antimicrobial resistance is crucial for animal health and food safety.
  • Plasmid-mediated resistance can facilitate rapid spread among bacterial populations.

Purpose of the Study:

  • To investigate antibiotic resistance patterns in Staphylococcus hyicus and Staphylococcus chromogenes from porcine and bovine sources.
  • To characterize the plasmid profiles associated with antibiotic resistance in these strains.
  • To compare resistance-associated plasmids with those found in human Staphylococcus aureus.

Main Methods:

  • Collection of Staphylococcus hyicus and Staphylococcus chromogenes strains from English and Belgian livestock.

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  • Determination of antibiotic resistance profiles for each strain.
  • Plasmid DNA extraction and profiling using gel electrophoresis.
  • Comparison of plasmid sizes and resistance associations.

    • Main Results:

    • Fifty-one Staphylococcus hyicus and six Staphylococcus chromogenes strains were analyzed.
    • Plasmids conferring resistance to tetracycline, erythromycin, and streptomycin were identified in numerous strains.
    • These resistance plasmids were comparable in size to those found in human Staphylococcus aureus.
    • Numerous small, non-resistance-conferring (cryptic) plasmids were also observed.

    Conclusions:

    • Strains of Staphylococcus hyicus and Staphylococcus chromogenes harbor plasmids associated with clinically relevant antibiotic resistances.
    • The presence of similar-sized resistance plasmids in both animal and human staphylococci suggests potential for interspecies transfer.
    • Further research is needed to understand the epidemiological implications of these findings in veterinary and public health.