title: Detection of classical and newly described staphylococcal superantigen genes in coagulase-negative staphylococci isolated from bovine intramammary infections.
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.
authors.affiliation: Department of Veterinary Clinical Sciences, Washington State University, Pullman, WA 99164-6610, USA.
authors.forename: Joo Youn
authors.initials: JY
authors.lastname: Park
authors.forename: Lawrence K
authors.initials: LK
authors.lastname: Fox
authors.forename: Keun Seok
authors.initials: KS
authors.lastname: Seo
authors.forename: Mark A
authors.initials: MA
authors.lastname: McGuire
authors.forename: Yong Ho
authors.initials: YH
authors.lastname: Park
authors.forename: Fred R
authors.initials: FR
authors.lastname: Rurangirwa
authors.forename: William M
authors.initials: WM
authors.lastname: Sischo
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Bohach
mesh_terms: D000818:Animals; D002417:Cattle; D003030:Coagulase / Q000378:metabolism; D005260:Female; D008414:Mastitis, Bovine / Q000382:microbiology*; D016133:Polymerase Chain Reaction / Q000662:veterinary; D015995:Prevalence; D013203:Staphylococcal Infections / Q000382:microbiology / Q000662:veterinary*; D013210:Staphylococcus / Q000201:enzymology / Q000235:genetics*; D018089:Superantigens / Q000235:genetics*
chemical_list: D003030:Coagulase; D018089:Superantigens