JAC Advance Access published online on January 6, 2003
Journal of Antimicrobial Chemotherapy, doi:10.1093/jac/dkg047
© 2003 by The British Society for Antimicrobial Chemotherapy
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Original article
1 Department of Clinical
Pathology, Kosin University College of Medicine, Amnam-Dong 34, Seo-Ku, Busan; Research Institute of Bacterial
Resistance, Yonsei University College of Medicine, Seoul
* Corresponding author. E-mail: kscpjsh{at}ns.kosinmed.or.kr.
Received 7 March 2002
; revised 19 June 2002
; accepted 18 October 2002
We report the first description of a new integron containing blaVIM-2, a metallo-
Characterization of a new integron containing VIM-2,
a metallo-
-lactamase gene
cassette, in a clinical isolate of Enterobacter cloacae
2 Research Institute of Bacterial
Resistance and Department
of Clinical Pathology, Yonsei University College of Medicine, Seoul
3 Research Institute of Bacterial
Resistance, Yonsei University College of Medicine, Seoul
4 Department of Genetic Engineering,
Youngdong University, Youngdong
5 SJ
Hightech, Busan
6 Department
of Clinical Pathology, Dong-A University College of Medicine, Busan,
South Korea
7 Department of Internal Medicine, Kosin University College of Medicine, Amnam-Dong 34, Seo-Ku, Busan
8 Department of Therapeutic Radiology,
Kosin University College of Medicine, Amnam-Dong 34, Seo-Ku, Busan
-lactamase gene from Enterobacter
cloacae KU680, which was isolated from peritoneal fluid of
a liver cirrhosis patient in South Korea. Antibiotic susceptibility
testing, and modified Hodge and EDTA-disc synergy tests, were carried
out to screen for metallo-
-lactamase-producing
strains. PCR and sequence analysis were used to identify and analyse
the blaVIM-2-containing integron. The
isolate was resistant to most
-lactams,
including imipenem, and demonstrated a positive modified Hodge and
EDTA-disc synergy test, which are findings suggesting a metallo-
-lactamase.
Preliminary PCR-based experiments detected the metallo-
-lactamase
gene blaVIM-2. Sequencing of the 4392
bp cloned PCR amplicon, containing the gene cassette blaVIM-2,
revealed the structure of the class 1 integron. The integron also
contained additional insert gene cassettes, aadA,
and unknown open reading frames ‘orfII' and ‘orfIII'. To the best of our knowledge,
this is the first time that this metallo-
-lactamase
gene has been detected in E. cloacae.![]()
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