PMID: 32133973Mar 7, 2020Paper

Multidrug resistance of the extended-spectrum beta-lactamase-producing Klebsiella pneumoniae isolated in Tizi-Ouzou (Algeria)

Cellular and Molecular Biology
Karim BarizKarim Houali

Abstract

The emergence and spread of multidrug-resistant bacteria is a major public health concern. This study sought to investigate the phenotypic and genotypic characteristics of clinical isolates of ESBL-producing Klebsiella pneumoniae, at University Hospital of Tizi-Ouzou.  Antibiotic susceptibility testing of the strains was carried out by the disc diffusion method, the ESBL production was screening by the Double Disc Synergy Test and  confirmed by the Phenotypic Confirmatory Disc Diffusion Test. Genomic DNA was extracted using the  Qiagen DNeasy Blood & Tissue Kit  mini kit (Qiagen) according to the manufacturer's instructions.PCR targeting the genes  blaCTX-M, blaTEM, blaSHV, blaVEB, blaGES, blaPER, blaBEL, blaVIM, blaIMP, blaKPC, blaNDM and blaOXA48 was performed. A CTX-M PCR-based grouping method was carried out using primers specific to the groups 1, 2 and 9. Conjugative transfer of plasmids was carried out using sodium azide-resistant recipient strain Escherichia coli K12. The phylogenetic relationship was determined by ERIC-PCR. All strains of K. pneumoniae tested shared ESBL producer's genes belonging to the CTX-M group 1. These strains showed a high level of resistance to ß-lactams, aminoglycosides, fluoroquinolones an...Continue Reading

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