Publication: The BpeEF-OprC efflux pump is responsible for widespread trimethoprim resistance in clinical and environmental Burkholderia pseudomallei isolates
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Issued Date
2013-09-01
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ISSN
10986596
00664804
00664804
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2-s2.0-84882420742
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Mahidol University
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SCOPUS
Bibliographic Citation
Antimicrobial Agents and Chemotherapy. Vol.57, No.9 (2013), 4381-4386
Suggested Citation
Nicole L. Podnecky, Vanaporn Wuthiekanun, Sharon J. Peacock, Herbert P. Schweizer The BpeEF-OprC efflux pump is responsible for widespread trimethoprim resistance in clinical and environmental Burkholderia pseudomallei isolates. Antimicrobial Agents and Chemotherapy. Vol.57, No.9 (2013), 4381-4386. doi:10.1128/AAC.00660-13 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/32182
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Title
The BpeEF-OprC efflux pump is responsible for widespread trimethoprim resistance in clinical and environmental Burkholderia pseudomallei isolates
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Abstract
Trimethoprim-sulfamethoxazole (co-trimoxazole) is the primary drug used for oral eradication therapy of Burkholderia pseudomallei infections (melioidosis). Here, we demonstrate that trimethoprim resistance is widespread in clinical and environmental isolates from northeast Thailand and northern Australia. This resistance was shown to be due to BpeEF-OprC efflux pump expression. No dihydrofolate reductase target mutations were involved, although frequent insertion of ISBma2 was noted within the putative folA transcriptional terminator. All isolates tested remained susceptible to trimethoprim- sulfamethoxazole, suggesting that resistance to trimethoprim alone in these strains probably does not affect the efficacy of co-trimoxazole therapy. Copyright © 2013, American Society for Microbiology. All Rights Reserved.