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CTX-M형 Extended-Spectrum -Lactamase 생성 Escherichia coli의 확산 및 CTX-M-12의 출현

Dissemination of CTX-M Type Extended-Spectrum β-Lactamases and Emergence of CTX-M-12 in Escherichia coli

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참고문헌

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초록

배경 : 국내에서 분리되는 Escherichia coli의 Ambler class Aextended-spectrum -lactamase (ESBL) 생성 현황을 알아보고자 하였다.방법: 2004년 2월부터 7월까지 전국 12개 병원에서 분리된cefotaxime 혹은 ceftazidime에 중간 혹은 내성인E. coli를 수 집하였다. 항균제 감수성은 디스크 확산법으로 시험하였고, ESBL생성은 double-disk synergy 시험으로 확인하였다. 한천희석법으로 -lactam 항균제의 최소억제 농도를 측정하였다. 중합연쇄반응으로 TEM형, SHV형, CTX-M형, PER-1형, VEB형, IBC형, GES형 및 TLA형 유전자를 검출하였고, 중합연쇄반응 산물의 염기서열을 양방향으로 분석하였다.결과: 국내 12개 병원에서 수집한 cefotaxime 혹은 ceftazidime에 중 간 혹 은 내 성 인E. coli의 90.9% (149/164)가 double-disksynergy 양성 소견을 보였다. E. coli에서 가장 흔한 Ambler classA ESBL은 CTX-M-15 (53주)와 CTX-M-14 (24주)였으며,CTX-M-3, CTX-M-9 및 CTX-M-12가 9주, 3주 및 3주 검출되었고, SHV-2a, SHV-12 및 TEM-52 유전자를 지닌 균주가CTX-M형 ESBL 확산 2571 주 , 5 주 및 3 주 검 출 되 었 다 . 결론: 본 연구를 통하여 CTX-M형 ESBL을 생성하는 E. coli가 국내에서 확산중이며 CTX-M-12 생성균주가 출현하였음을 확인할 수 있었다.

Abstract

Background : Clinical isolates of Escherichia coli were evaluated to determine the prevalence and genotypes of Ambler class A extended-spectrum -lactamases (ESBLs). Methods : Clinical isolates of E. coli were collected from 12 hospitals from February through July, 2004. Antimicrobial susceptibility was tested by disk diffusion and agar dilution methods, and ESBLproduction was determined by double-disk synergy test. TEM, SHV, CTX-M, PER-1, VEB, IBC, GES, and TLA type ESBL genes were detected by PCR amplifications, and the PCR products were subjected to direct sequencing. Results : The double-disk synergy test was positive in 90.9% (149 in 164) of the ceftazidime- or cefotaxime-resistant E. coli isolates. The most prevalent types of Ambler class A ESBLs in E. coli isolates were CTX-M-15 (n=53). CTX-M-14 (n=24), CTX-M-3 (n=9), CTX-M-9 (n=3), CTX-M-12 (n=3), SHV-2a (n=1), SHV-12 (n=5) and TEM-52 (n=3) were also found. CTX-M-12 ESBL had never been reported before in Korea. Conclusions : CTX-M type ESBL-producing E. coli isolates are spreading and CTX-M-12 is emerging in Korea.

참고문헌 (26)

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관련 논문AI추천

Ambler Class A Extended-Spectrum β-Lactamase 생성 Escherichia coli와 Klebsiella pneumoniae의국내분리현황어영, 강정옥, 강지혜, 권수봉, 김의종, 박연준, 배일권, 신종희, 안지영, 용동은, 우건조, 이경원, 이위교, 이종욱, 정석훈, 홍성근대한임상미생물학회 · Annals of Clinical Microbiology2005 · 제8권 제1호CTX-M-12와 새로운 CTX-M형 Extended-Spectrum β-Lactamase생성 Klebsiella pneumoniae의 출현어영, 강정옥, 곽효선, 김의종, 박연준, 배일권, 신종희, 안지영, 용동은, 우건조, 이경원, 이성희, 이위교, 이종욱, 정석훈, 홍성근대한진단검사의학회 · Annals of Laboratory Medicine2006 · 제26권 제1호Prevalence of the Extended-Spectrum β-Lactamase and qnr Genes in Clinical Isolates of Escherichia coli어영, 강현경, 김재석, 김주원, 박용정, 배일권, 이경원, 정석훈대한진단검사의학회 · Annals of Laboratory Medicine2009 · 제29권 제3호CTX-M-12, PER-1 및 OXA-30 β-Lactamase 생성 Klebsiella pneumoniae의 출현어영, 곽효선, 김의종, 박연준, 배일권, 신종희, 안지영, 용동은, 우건조, 이경원, 이성희, 이위교, 이유내, 이종욱, 정석훈, 최태열, 홍성근대한임상미생물학회 · Annals of Clinical Microbiology2006 · 제9권 제2호대전지역에서 분리된 Escherichia coli 와 Klebsiella pneumoniae 의Extended-Spectrum -lactamase 생성 현황고지선, 구선회, 권계철, 박종우, 성지연, 신소연대한진단검사의학회 · Annals of Laboratory Medicine2007 · 제27권 제5호전국 주요 병원에서 분리된 Escherichia coli와 Klebsiella pneumoniae의 Extended-Specrum β-Lactamase 생성 현황과 특징김경보, 김빛나, 박정호, 윤종득, 이상희, 전병찬, 정석훈대한진단검사의학회 · Annals of Laboratory Medicine2003 · 제23권 제1호

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