Profiles of Non-aureus Staphylococci in Retail Pork and Slaughterhouse Carcasses: Prevalence, Antimicrobial Resistance, and Genetic Determinant of Fusidic Acid Resistanceopen access
- Authors
- Yang, Yu Jin; Lee, Gi Yong; Kim, Sun Do; Park, Ji Heon; Lee, Soo In; Kim, Geun-Bae; Yang, Soo-Jin
- Issue Date
- Mar-2022
- Publisher
- 한국축산식품학회
- Keywords
- non-aureus staphylococci; antimicrobial resistance; retail pork; slaughterhouse carcass
- Citation
- 한국축산식품학회지, v.42, no.2, pp 225 - 239
- Pages
- 15
- Journal Title
- 한국축산식품학회지
- Volume
- 42
- Number
- 2
- Start Page
- 225
- End Page
- 239
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/55547
- DOI
- 10.5851/kosfa.2021.e74
- ISSN
- 2636-0772
2636-0780
- Abstract
- As commensal colonizers in livestock, there has been little attention on staphylococci, especially non-aureus staphylococci (NAS), contaminating meat production chain. To assess prevalence of staphylococci in retail pork and slaughterhouse carcass samples in Korea, we collected 578 samples from Korean slaughterhouses (n=311) and retail markets (n=267) for isolation of staphylococci and determined antimicrobial resistance phenotypes in all the isolates. The presence of and prevalence of fusB-family genes (fusB, fusC, fusD, and fusF) and mutations in fusA genes were examined in fusidic acid resistant isolates. A total of 47 staphylococcal isolates of 4 different species (Staphylococcus aureus, n=4; S. hyicus, n=1; S. epidermidis, n=10; Mammaliicoccus sciuri, n=32) were isolated. Fusidic acid resistance were confirmed in 9/10 S. epidermidis and all of the 32 M. sciuri (previously S. sciuri) isolates. Acquired fusidic acid resistance genes were detected in all the resistant strains; fusB and fusC in S. epidermidis and fusB/C in M. sciuri. Multi-locus sequence type analysis revealed that ST63 (n=10, 31%) and ST30 (n=8, 25%) genotypes were most prevalent among fusidic acid resistant M. sciuri isolates. In conclusion, the high prevalence of fusB-family genes in S. epidermidis and M. sciuri strains isolated from pork indicated that NAS might act as a reservoir for fusidic acid resistance gene transmissions in pork production chains.
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