Detection of classical and newly described staphylococcal superantigen genes in coagulase-negative staphylococci isolated from bovine intramammary infections |
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| Authors: | Joo Youn Park Lawrence K. Fox Keun Seok Seo Mark A. McGuire Yong Ho Park Fred R. Rurangirwa William M. Sischo Gregory A. Bohach |
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| Affiliation: | 1. Department of Veterinary Clinical Sciences, Washington State University, Pullman, WA 99164-6610, USA;2. Department of Microbiology, Molecular Biology and Biochemistry, University of Idaho, Moscow, ID 83844, USA;3. Department of Animal and Veterinary Science, University of Idaho, Moscow, ID 83844, USA;4. Department of Microbiology, College of Veterinary Medicine and The BK21 Program for Veterinary Science, Seoul National University, Seoul 151-742, South Korea;5. Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA 99164, USA |
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| Abstract: | The coagulase-negative staphylococci (CNS) are the most prevalent mastitis pathogen group yet their virulence characteristics have not been well described. We investigated the presence of 19 classical and newly described staphylococcal superantigen (SAg) genes in CNS isolates from bovine intramammary infections (IMI). A total of 263 CNS representing 11 different Staphylococcus spp. were examined, and 31.2% (n = 82) of CNS isolates had one or more SAg genes; there were 21 different SAg gene combinations. The most prevalent combination of SAg genes (seb, seln and selq; n = 45) was found in S. chromogenes, S. xylosus, S. haemolyticus, S. sciuri subsp. carnaticus, S. simulans and S. succinus. The genes for SAgs appear to be widely distributed amongst CNS isolated from bovine IMI. |
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