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The First Report of Extended-Spectrum Β-Lactamase (Esbl) Genes in an Escherichia Coli Isolate From a One-Month-Old Infant With Acute Lymphoblastic Leukemia (All) in Iran Publisher



Roshani M1 ; Goudarzi H1 ; Sabzehali F1 ; Erfanimanesh S2 ; Dadashi M1 ; Hashemi A1
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Authors Affiliations
  1. 1. Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

Source: Archives of Clinical Infectious Diseases Published:2017


Abstract

Background: Bloodstream infection is one of the most life-threatening complications recognized as the frequent cause of treatment failure in children with acute lymphoblastic leukemia. Objectives: In this study, we describe the isolation of an extended-spectrum β-lactamase (ESBL)-producing Escherichia coli. Methods: Antimicrobial susceptibility tests were determined on the isolate by the Kirby-Bauer disk diffusion method. In addition, ESBL production of the isolate was examined using the Combination Disk Diffusion Test (CDDT). PCR was used to screen the presence of CTX-M-1, CTX-M-2, CTX-M-8, CTX-M-9, CTX-M-25, ISEcp1, IS26, and IS903 genes in this isolate. Results: We found an ESBL-producing E. coli in a 1-month-old infant with a blood cancer that carried CTX-M-1 group enzymes. Conclusions: Our finding emphasized the need for more precise screening methods to identify the causative infectious agents at early stages of infection to choose the appropriate treatment in these severely immunocompromised patients. © 2017, Archives of Clinical Infectious Diseases.
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