Frequency of colistin resistance in Pseudomonas aeruginosa: first report from Peru

Authors

DOI:

https://doi.org/10.17843/rpmesp.2021.382.6977

Keywords:

Pseudomonas aeruginosa, Antimicrobial Drug Resistance, Colistin, Peru

Abstract

This study aimed to determine the frequency of colistin resistance in Pseudomonas aeruginosa isolates obtained from three healthcare facilities in Lima and cryopreserved at the Laboratorio de Resistencia Antimicrobianos e Inmunopatología of the Universidad Peruana Cayetano Heredia (UPCH). The colistin broth disk elution method was used for the phenotypic identification of colistin resistance. We detected the expression of the mcr-1 gene by using the phenotypic diffusion method with combined colistin and ethylenediaminetetraacetic acid (EDTA) disks; and polymerase chain reaction (PCR) was used for molecular identification of the gene. Of the 97 isolates, 7 (7.2%) were resistant to colistin; however, none carried the mcr-1 gene. This is the first report from Peru on clinical isolates of colistin-resistant Pseudomonas aeruginosa, which suggests the need for implementation of appropriate methodologies for the epidemiological surveillance of colistin-resistant pathogens.

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Published

2021-05-26

Issue

Section

Brief Report

How to Cite

1.
Zarate M, Barrantes Salinas D, Cuicapuza D, Velasquez J, Fernández N, Salvatierra G, et al. Frequency of colistin resistance in Pseudomonas aeruginosa: first report from Peru. Rev Peru Med Exp Salud Publica [Internet]. 2021 May 26 [cited 2024 Nov. 21];38(2):308-12. Available from: https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/6977

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