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Profiles of Enterotoxin Genes and Antimicrobial Resistance in Staphylococcus pseudintermedius Strains Isolated from Livestock and Companion Animals

한국식품위생안전성학회지 2019년 34권 6호 p.576 ~ 582
이기용 ( Lee Gi-Yong ) - Chung-Ang University Department of Animal Science and Technology

이행호 ( Lee Haeng-Ho ) - Chung-Ang University Department of Animal Science and Technology
엄홍식 ( Um Hong-Sik ) - Chung-Ang University Department of Animal Science and Technology
양수진 ( Yang Soo-Jin ) - Chung-Ang University Department of Animal Science and Technology

Abstract


Staphylococcus pseudintermedius is an opportunistic pathogen in dogs and is recognized as a zoonotic pathogen causing public health concern. Although canine-associated S. pseudintermedius has mainly been recognized for its antimicrobial resistance and ability to cause skin infections in dogs, information on antimicrobial resistance profiles and enterotoxigenicity of S. pseudintermedius in livestock is very limited. In this study, we investigated the prevalence of 18 different staphylococcal enterotoxin (SE) genes and toxic shock syndrome toxin gene (tst-1) in S.pseudintermedius strains isolated from dogs, pigs, and beef cattle. Moreover, antimicrobial resistance profiles of the strains were determined along with the presence of mecA and SCCmec types. Except for one bovine isolate, all S.pseudintermedius isolates from dogs and pigs were resistant to multiple drugs (≥ 4 different drugs). Four out of six canine isolates were methicillin resistant and carried SCCmec type V. In addition, 11 different SE genes (seb, sec, see, seg, sei, sej, sel, seo, sep, seq, and seu) and tst-1 were identified in S. pseudintermedius isolates from dogs, pigs, and beef cattle. Most S. pseudintermedius isolates (83%) harbored multiple SE genes, and sel (42%) and sep (42%) were most frequently detected in the isolates. Our results suggested that S. pseudintermedius isolates from livestock and companion animals may serve as a reservoir for SE genes and antimicrobial resistance.

키워드

Staphylococcus pseudintermedius; Antimicrobial resistance; Staphylococcal enterotoxins (SEs)
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