Utility of flow citometry for detecting metallo-beta-lactamase-producing Pseudomonas aeruginosa
DOI:
https://doi.org/10.17843/rpmesp.2020.374.4825Keywords:
Pseudomonas aeruginosa, Carbapenems, beta-Lactamases, beta-Lactam resistance, Flow CytometryAbstract
In order to determine the utility of flow cytometry for detecting metallo-beta-lactamase (MBL)-producing Pseudomonas aeruginosa, we used genotypically characterized P. aeruginosa isolates from the Molecular Epidemiology and Genetics Laboratory of the Universidad Nacional Mayor de San Marcos. A total of 29 isolates (17 MBL-producing and 12 non-MBL-producing) were analyzed with the FACSCalibur (Becton Dickinson) cell viability kit. Two treatments were used, one with meropenem and the other with meropenem-EDTA. A significant difference between MBL and non-MBL-producing P. aeruginosa was demonstrated using the fluorescence ratio in non-living cells, considering a cut-off point of >1.6. We determined a sensitivity of 94.1% and a specificity of 100%. Flow cytometry represents an alternative for the detection of MBL-producing P. aeruginosa.Downloads
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Published
2020-11-11
Issue
Section
Brief Report
How to Cite
1.
Salinas-Salcedo IA, Saldaña-Jiménez JA, Guevara-Canales JM, Gonzales-Escalante E. Utility of flow citometry for detecting metallo-beta-lactamase-producing Pseudomonas aeruginosa. Rev Peru Med Exp Salud Publica [Internet]. 2020 Nov. 11 [cited 2024 Nov. 2];37(4):700-4. Available from: https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/4825