6533b82dfe1ef96bd1291fb5
RESEARCH PRODUCT
Detection of plasmid-mediated colistin resistance, mcr-1 gene, in Escherichia coli isolated from high-risk patients with acute leukemia in Spain
Miguel A. SanzLaurent DebrauwerAna DjukovicRym LalaouiJaime SanzEva María González-barberáCarles UbedaSofiane BakourKarina B. XavierJose Luis López-hontangasJean-marc RolainBernhard KusterMiguel Salavertsubject
0301 basic medicineMicrobiology (medical)medicine.drug_class030106 microbiologyAntibioticsColistin resistanceMicrobial Sensitivity TestsBiologymedicine.disease_causebeta-LactamasesMicrobiologyLeukemic patients03 medical and health sciencesMinimum inhibitory concentration0302 clinical medicinePlasmid[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseasesDrug Resistance BacterialmedicineEscherichia coliHumansPharmacology (medical)[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology030212 general & internal medicineEscherichia coliEscherichia coli Infections[SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseasesLeukemiaColistinEscherichia coli ProteinsMiddle Agedbiology.organism_classificationEnterobacteriaceae[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology3. Good healthAnti-Bacterial AgentsInfectious DiseasesSpainColistin resistance Escherichia coli Leukemic patients Spain mcr-1 gene[SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/VirologyColistinMultilocus sequence typingmcr-1 geneMCR-1hormones hormone substitutes and hormone antagonistsmedicine.drugPlasmidsdescription
Background: Bacterial infections in immunocompromised patients are associated with a high mortality and morbidity rate. In this high-risk group, the presence of multidrug-resistant (MDR) bacteria, particularly bacteria that harbor a transferable antibiotic resistance gene, complicates the management of bacterial infections. In this study, we investigated the presence of the transferable colistin resistance mcr genes in patients with leukemia in Spain. Methods: 217 fecal samples collected in 2013-2015 from 56 patients with acute leukemia and colonized with MDR Enterobacteriaceae strains, were screened on September 2017 for the presence of the colistin resistance mcr genes (mcr-1 to -5) by multiplex PCR. mcr positive strains selected on LBJMR and Mac-Conkey supplemented with colistin (2 mu g/ml) media were phenotypically and molecularly characterized by antimicrobial susceptibility testing, minimum inhibitory concentration, multilocus sequence typing and plasmid characterization. Results: Among 217 fecal samples, 5 samples collected from 3 patients were positive for the presence of the mcr-1 colistin-resistance gene. Four Escherichia coli strains were isolated and exhibited resistance to colistin with MIC = 4 mu g/ml. Other genes conferring the resistance to beta-lactam antibiotics have also been identified in mcr-1 positive strains, including bla(TEM-206) and bla(TEM-98). Three different sequence types were identified, including ST1196, ST140 and ST10. Plasmid characterization allowed us to detect the mcr-1 colistin resistance gene on conjugative IncP plasmid type. Conclusion: To the best of our knowledge, we have identified the mcr-1 gene for the first time in leukemia patients in Spain. In light of these results, strictmeasures have been implemented to prevent its dissemination. (c) 2019 Japanese Society of Chemotherapy and The Japanese Association for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-01 |