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Staphylococcus argenteus from rabbits in Thailand
Nitaya Indrawattana1, Natapol Pumipuntu2, Nawarat Suriyakhun3
1Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Microbiologyopen
|June 23, 2018
Summary
Staphylococcus argenteus, a novel species, was identified in rabbits in Thailand. This bacterium, often misidentified as S. aureus, showed antimicrobial resistance and carried virulence genes, suggesting potential pathogenicity.
Area of Science:
- Microbiology
- Veterinary Science
- Bacterial Pathogenesis
Background:
- Staphylococcus argenteus is closely related to Staphylococcus aureus and frequently misidentified.
- Understanding the prevalence and characteristics of S. argenteus in animal populations is crucial for public health.
Purpose of the Study:
- To investigate the presence and characteristics of S. argenteus in rabbits with abscess lesions in Thailand.
- To analyze the antimicrobial resistance and virulence factors of identified S. argenteus isolates.
Main Methods:
- Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) for species identification.
- Gene amplification (nonribosomal peptide synthetase) and multilocus sequence typing (MLST) for confirmation.
- Disk diffusion and PCR assays for antimicrobial resistance profiling and detection of virulence genes.
Main Results:
- Three S. argenteus isolates were identified among 19 S. aureus complex isolates from rabbits.
- S. argenteus isolates exhibited resistance to penicillin and doxycycline, while S. aureus isolates showed broader resistance.
- Virulence genes (sea, sec, sed, hla, hlb, clfA, pvl) were detected in S. argenteus isolates, with one isolate carrying multiple enterotoxin genes.
Conclusions:
- This study reports the first identification of S. argenteus in rabbits in Thailand.
- The presence of virulence genes and antimicrobial resistance in S. argenteus suggests its potential pathogenicity in rabbits.
- Further research on S. argenteus in diverse animal species and humans is warranted.
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