Development and validation of a triplex quantitative real-time PCR assay to detect efflux pump-mediated antibiotic resistance in Burkholderia pseudomallei.

ABSTRACT:

Aim

To develop a probe-based triplex quantitative real-time PCR assay to simultaneously detect the upregulation of the efflux pumps AmrAB-OprA, BpeAB-OprB and BpeEF-OprC in Burkholderia pseudomallei strains exhibiting increased minimum inhibitory concentrations toward meropenem, doxycycline or trimethoprim-sulfamethoxazole.

Methods

The triplex assay was developed and subsequently tested on RNA isolated from eight clinical and eight laboratory-generated B. pseudomallei mutants harboring efflux pump regulator mutations.

Results

The triplex assay accurately detected efflux pump upregulation in all clinical and laboratory mutants, which corresponded with decreased antibiotic susceptibility or antibiotic resistance.

Conclusion

Rapid detection of antibiotic resistanc

SUBMITTER: Webb JR 

PROVIDER: S-EPMC6190177 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature