부산지역 하천에서 분리된 장내세균 Escherichia coli와 Klebsiella pneumoniae의 광범위 베타 락탐 분해효소 (Extended-Spectrum ${\beta}-Lactamase$)에 대한 유형별 분류

Typing of Extended-Spectrum ${\beta}-Lactamase$ of Escherichia coli and Klebsiella pneumoniae Isolated from Rivers in Busan, Korea

  • 이훈구 (부경대학교 자연과학대학 미생물학과) ;
  • 김혜진 (부경대학교 자연과학대학 미생물학과) ;
  • 김군도 (부경대학교 자연과학대학 미생물학과)
  • Lee, Hun-Ku (Department of Microbiology, Pukyong National Univ.) ;
  • Kim, Hye-Jin (Department of Microbiology, Pukyong National Univ.) ;
  • Kim, Gun-Do (Department of Microbiology, Pukyong National Univ.)
  • 발행 : 2007.06.30

초록

본 연구는 부산지역 하천에서 plasmid 매개성 광범위 ${\beta}-lactam$ 분해효소(extended spectrum ${\beta}-lactamase;\;ESBL$)를 생성하는 세균을 분리하여 생성된 광범위 ${\beta}-lactam$ 분해효소를 유형별로 분류하기 위함이다. Escherichia coli 6균주와 Klebsiella pneumoniae 15균주가 피전달균주인 Escherichia coli J53 $Azid^{R}$에 plasmid 매개성 광범위 ${\beta}-lactam$ 분해효소 생성 인자를 전달하였다. PCR 후 얻은 유전인자를 plasmid로 매개된 광범위 ${\beta}-lactam$ 분해효소 유전자의 염기서열 분석결과, E. coli와 K. pneumoniae 유전자를 BCM Search Launcher 및 GenBank nucleotide database를 통하여 검색한 결과 ESBL 유형은 TEM-52형과 SHV-12형이었다. TEM-52는 E. coli와 K. pneumoniae 양쪽에서 분리되었다. 그러나 SHV-12는 K. pneumoniae에서만 분리되었다. 이상의 결과로부터 plasmid 매개성 광범위 ${\beta}-lactam$ 분해효소를 생성하는 세균이 한국에서는 이미 임상범위를 넘어 자연계까지 확산되었음을 알 수 있었다.

The purpose of this study was typing the plasmid mediated extended spectrum ${\beta}-lactamases$ produced by enteric bacteria isolated from rivers in Pusan. Six strains of Eschericha coli and fifteen strains of Klebsiella pneumoniae transferred their plasmid mediated extended spectrum ${\beta}-lactamase$ genes to the recipient strain Eschericha coli J53 $Azid^{R}$. The plasmid mediated extended spectrum ${\beta}-lactamase$ genes were sequenced directly after PCR and the types were determined by the BCM Search Launcher and GenBank nucleotid database. Determined types of the plasmid mediated extended spectrum ${\beta}-lactamases$ were TEM-52 and SHV-12. TEM-52 was isolated from both Escherichia coli and Klebsiella pneumoniae. However SHV-12 was isolated from Klebsiella pneumoniae only. The results indicated that the plasmid mediated extended spectrum ${\beta}-lactamase$ producing bacteria spreded over the area of clinical to the nature in Korea.

키워드

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