Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Genomic Characterization of Multidrug-Resistant Extended Spectrum β-Lactamase-Producing <i>Klebsiella pneumoniae</i> from Clinical Samples of a Tertiary Hospital in South Kivu Province, Eastern Democratic Republic of Congo
oleh: Leonid M. Irenge, Jérôme Ambroise, Bertrand Bearzatto, Jean-François Durant, Maxime Bonjean, Jean-Luc Gala
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2023-02-01 |
Deskripsi
Multidrug-resistant (MDR) and extended spectrum β-lactamase (ESBL)-producing extra-intestinal <i>K. pneumoniae</i> are associated with increased morbidity and mortality. This study aimed to characterize the resistance and virulence profiles of extra-intestinal MDR ESBL-producing <i>K. pneumoniae</i> associated with infections at a tertiary hospital in South-Kivu province, DRC. Whole-genome sequencing (WGS) was carried out on 37 <i>K. pneumoniae</i> isolates displaying MDR and ESBL-producing phenotype. The assembled genomes were analysed for phylogeny, virulence factors and antimicrobial resistance genes (ARG) determinants. These isolates were compared to sub-Saharan counterparts. <i>K. pneumoniae</i> isolates displayed a high genetic variability with up to 16 sequence types (ST). AMR was widespread against β-lactamases (including third and fourth-generation cephalosporins, but not carbapenems), aminoglycosides, ciprofloxacin, tetracycline, erythromycin, nitrofurantoin, and cotrimoxazole. The <i>bla</i><sub>CTX-M-15</sub> gene was the most common β-lactamase gene among <i>K. pneumoniae</i> isolates. No carbapenemase gene was found. ARG for aminoglycosides, quinolones, phenicols, tetracyclines, sulfonamides, nitrofurantoin were widely distributed among the isolates. Nine isolates had the colistin-resistant R256G substitution in the <i>pmrB</i> efflux pump gene without displaying reduced susceptibility to colistin. Despite carrying virulence genes, none had hypervirulence genes. Our results highlight the genetic diversity of MDR ESBL-producing <i>K. pneumoniae</i> isolates and underscore the importance of monitoring simultaneously the evolution of phenotypic and genotypic AMR in Bukavu and DRC, while calling for caution in administering colistin and carbapenem to patients.