Lim, K.; Yasin, R.; Yeo, C.; Puthucheary, S.; Thong, K. L. (2009) Characterization of multidrug resistant ESBL-producing Escherichia coli isolates from hospitals in Malaysia. Journal of biomedicine & biotechnology, 2009. p. 165637. ISSN 1110-7251
The emergence of Escherichia coli that produce extended spectrum beta-lactamases (ESBLs) and are multidrug resistant (MDR) poses antibiotic management problems. Forty-seven E. coli isolates from various public hospitals in Malaysia were studied. All isolates were sensitive to imipenem whereas 36 were MDR (resistant to 2 or more classes of antibiotics). PCR detection using gene-specific primers showed that 87.5% of the ESBL-producing E. coli harbored the blaTEM gene. Other ESBL-encoding genes detected were blaOXA, blaSHV, and blaCTX-M. Integron-encoded integrases were detected in 55.3% of isolates, with class 1 integron-encoded intI1 integrase being the majority. Amplification and sequence analysis of the 5'CS region of the integrons showed known antibiotic resistance-encoding gene cassettes of various sizes that were inserted within the respective integrons. Conjugation and transformation experiments indicated that some of the antibiotic resistance genes were likely plasmid-encoded and transmissible. All 47 isolates were subtyped by PFGE and PCR-based fingerprinting using random amplified polymorphic DNA (RAPD), repetitive extragenic palindromes (REPs), and enterobacterial repetitive intergenic consensus (ERIC). These isolates were very diverse and heterogeneous. PFGE, ERIC, and REP-PCR methods were more discriminative than RAPD in subtyping the E. coli isolates.
|Item Type: ||Article|
- Lim, K.
- Yasin, R.
- Yeo, C.
- Puthucheary, S.
- Thong, K. L.(Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA)
|Journal or Publication Title: ||Journal of biomedicine & biotechnology|
|Additional Information: ||Microbiology Division, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia|
|Uncontrolled Keywords: ||Anti-Bacterial Agents/pharmacology|
|Subjects: ||R Medicine|
|Divisions: ||Faculty of Science|
|Depositing User: ||Mr. Faizal Hamzah|
|Date Deposited: ||29 Apr 2011 17:49|
|Last Modified: ||24 Jan 2014 10:13|
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