Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Antimicrobial Susceptibility of Staphylococci sp. Isolated from Bovine Milk

우유에서 분리된 포도상구균속 세균의 항생제 감수성

  • Received : 2010.11.19
  • Accepted : 2010.12.10
  • Published : 2010.12.31
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Abstract

The prevalence and antimicrobial susceptibilities of Staphylococcal isolates from bovine milk samples were assessed. From January 2009 to October 2009, a total 287 bovine milk samples were randomly collected from 15 stock raising farms located in northern area of Kyunggi province and cultured for the presence of Staphylococci spp. A total 79 staphylococcal isolates were recovered from the milk samples. The predominant isolates were S. aureus (43.03%) and S. chromogenes (24.05%). Antimicrobial resistance patterns of 79 Staphylococcal isolates against ampicillin, chloramphenicol, ciprofloxacin, erythromycin, gentamicin, oxacillin, teicoplanin, tetracyclin, and vancomycin were tested. Staphylococcal isolates revealed the highest resistance to ampicillin (56.96%) and oxacillin (39.23%). Of 31 oxacillin resistance strains, 8 strains carry mecA gene which is responsible for methicillin resistance.

본 연구에서는 우유 시료에서 포도상구균속 세균을 분리하고 각 균종을 동정하고 항생제 감수성을 검사하였다. 2009년 1월부터 2009년 10월까지 경기 북부지역 15개 축산 농가에서 287개의 우유 시료를 수집하여 총 79개의 포도상구균속 세균을 분리 동정하였다. 가장 우세한 비율로 분포하는 세균은 S. aurues (43.03%)였으며 coagulase negative staphylococci (CNS) 중에서는 S. chromogenes (24.05%)가 가장 우세하게 분포하였다. 9종의 항생제에(ampicillin, chloramphenicol, ciprofloxacin, erythromycin, gentamicin, oxacillin, teicoplanin, tetracyclin, vancomycin) 대한 감수성 검사를 실시한 결과 대다수의 항생제에 대한 감수성 비율이 높았으나 ampicillin (56.96%)과 oxacillin (39.23%)에 대한 내성 균주의 비율이 높게 나타났다. 31종의 oxacillin 저항성균주 중 8개의 균주가 methicillin 내성에 관여하는 mecA 유전자를 보유하고 있었다.

Keywords

References

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