Publication: Local dissemination of multidrug-resistant acinetobacter baumannii clones in a Thai Hospital
Issued Date
2011-03-01
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ISSN
10766294
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2-s2.0-79952372430
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Mahidol University
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SCOPUS
Bibliographic Citation
Microbial Drug Resistance. Vol.17, No.1 (2011), 109-119
Suggested Citation
Palpasa Kansakar, Dorji Dorji, Piriyaporn Chongtrakool, Sirima Mingmongkolchai, Benjaporn Mokmake, Padungsri Dubbs Local dissemination of multidrug-resistant acinetobacter baumannii clones in a Thai Hospital. Microbial Drug Resistance. Vol.17, No.1 (2011), 109-119. doi:10.1089/mdr.2010.0062 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/12076
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Title
Local dissemination of multidrug-resistant acinetobacter baumannii clones in a Thai Hospital
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Abstract
A total of 83 Acinetobacter baumannii isolates from patients attending a tertiary care university hospital in Thailand were investigated for their clonal relatedness, antimicrobial susceptibility profiles, and integron carriage. Susceptibility profiles showed that 56 (67%) of these isolates exhibited multiple drug resistance (MDR). Pulsed-field gel electrophoresis (PFGE) showed that 73% of these resistant isolates were clustered into three predominant PFGE types: 6, 7, and 36. This suggested that the high number of isolates exhibiting MDR phenotypes observed in the hospital is, to some extent, due to the spread of these three resistant clones. Class 1 integrase genes were detected in all MDR isolates belonging to PFGE type 6, most MDR isolates belonging to PFGE type 7 and none of the isolates belonging to PFGE type 36. Five different class 1 gene cassette arrays, dfrA1-orfC, bla IMP-14 -aac6′, aacA4- catB8-aadA1, aacC1-orfX-orfX′-aadA1a, and aacC1-orfX-orfX-orfX′- aadA1a, were identified, of which the bla IMP-14 -aac6′ array has only been found in Thai isolates. Two isolates identified in this study carried a class 2 integrase gene with a 2.2 kb cassette array containing aadA1-sat-dfrA1. Copyright © 2011, Mary Ann Liebert, Inc.