Plasmid-mediated colistin resistance mcr-1 in a clinical isolate of Escherichia coli ST19 in Algeria

We describe the emergence of plasmid-mediated colistin resistance mcr-1 in a clinical isolate of Escherichia coli ST19. The strain was isolated from a urine sample of a 75-year-old male patient. The identification was carried out by an automated system. The antibiogram was performed according to CLSI recommendations. The colistin MIC was determined by broth micro-dilution according to CA-SFM/EUCAST criteria. The detection of mcr-1 was carried out by immunochromatographic test and PCR mcr-1. Genetic transfers and determination of the plasmid incompatibility group were made. The ST was carried out by MLST using the Pasteur scheme. The strain has a high-level penicillinase resistance phenotype. It was susceptible to amikacin and resistant to gentamicin, tobramycin, fluoroquinolones, tetracycline, chloramphenicol, and cotrimoxazole. The strain was resistant to colistin (MIC ꞊ 4 μg/ml). The genetic transfer is given a colistin-resistant transconjugant. The plasmid carrying mcr-1 gene belongs to the incompatibility group IncHI2.The strain belongs to ST19. J Microbiol Infect Dis 2019; 10(4):222-224.

___

  • 1. Liu Y-Y, Wang Y, Walsh TR, et al. Emergence of plasmid-mediated colistin resistance mechanism MCR-1 in animals and human beings in China: a microbiological and molecular biological study. The Lancet Infectious Diseases. févr 2016;16(2):161‑8.
  • 2. Dortet L, Bonnin R, Jousset A, Gauthier L, Naas T. Émergence de la résistance à la colistine chez les entérobactéries : une brèche dans le dernier rempart contre la pan-résistance ! Journal des Anti-infectieux. déc 2016;18(4):139‑59.
  • 3. CLSI. Performance standards for Antimicrobial Susceptibility testing. 28th ed. CLSI supplement M100.Wayne, PA: Clinical and Laboratory Standard Institute; 2018. (ISBN: 1-56238-839-8)
  • 4. Enterobacteriaceae. In: CASFM / EUCAST: Société Française de Microbiologie Ed; 2018: p.36-43.
  • 5. Chabou S, Leangapichart T, Okdah L, Le Page S, Hadjadj L, Rolain J-M. Real-time quantitative PCR assay with Taqman ® probe for rapid detection of MCR-1 plasmid-mediated colistin resistance. N Microb N Infect 2016; 13:71‑4.
  • 6. Jaureguy F, Landraud L, Passet V, et al. Phylogenetic and genomic diversity of human bacteremic Escherichia coli strains. BMC Genomics 2008;9 (1):560.
  • 7. Bachiri T, Lalaoui R, Bakour S, et al. First Report of the Plasmid-Mediated Colistin Resistance Gene mcr-1 in Escherichia coli ST405 Isolated from Wildlife in Bejaia, Algeria. Microbial Drug Resist 2018; 24(7):890‑5.
  • 8. Yanat B, Machuca J, Yahia RD, Touati A, Pascual Á, Rodríguez-Martínez J-M. First report of the plasmid-mediated colistin resistance gene mcr-1 in a clinical Escherichia coli isolate in Algeria. Intern J Antimicrob Agent 2016;48(6):760‑1.
  • 9. Berrazeg M, Hadjadj L, Ayad A, Drissi M, Rolain J-M. First Detected Human Case in Algeria of mcr-1 Plasmid-Mediated Colistin Resistance in a 2011 Escherichia coli Isolate. Antimicrob Agent Chemother 2016; 60(11):6996‑7.
  • 10. Delgado-Blas JF, Ovejero CM, Abadia-Patiño L, Gonzalez-Zorn B. Coexistence of mcr-1 and bla NDM-1 in Escherichia coli from Venezuela. Antimicrob Agents Chemother 2016; 60(10):6356‑8.
  • 11. Rossi F, Girardello R, Morais C, et al. Plasmid-mediated mcr-1 in carbapenem-susceptible Escherichia coli ST156 causing a blood infection: an unnoticeable spread of colistin resistance in Brazil? Case Reports: Clinics (Sao Paulo) 2017; 72(10):642‑4.
  • 12. Yang R-S, Feng Y, Lv X-Y, et al. Emergence of NDM-5- and MCR-1-Producing Escherichia coli Clones ST648 and ST156 from a Single Muscovy Duck (Cairina moschata). Antimicrob Agents Chemother 2016; 60(11):6899‑902.
  • 13. Bernasconi OJ, Kuenzli E, Pires J, et al. Travelers Can Import Colistin-Resistant Enterobacteriaceae, Including Those Possessing the Plasmid-Mediated mcr-1 Gene. Antimicrob Agents Chemother 2016; 60(8):5080‑4.
  • 14. Doumith M, Godbole G, Ashton P, et al. Detection of the plasmid-mediated mcr-1 gene conferring colistin resistance in human and food isolates of Salmonella enterica and Escherichia coli in England and Wales. J Antimicrob Chemother 2016; 71(8):2300‑5.