Global Expansion of Linezolid-Resistant Coagulase-Negative Staphylococci
In: Frontiers in Microbiology ; volume 12 ; ISSN 1664-302X, 2021
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Zugriff:
Coagulase-negative staphylococci (CoNS) for a long time were considered avirulent constituents of the human and warm-blooded animal microbiota. However, at present, S. epidermidis , S. haemolyticus , and S. hominis are recognized as opportunistic pathogens. Although linezolid is not registered for the treatment of CoNS infections, it is widely used off-label, promoting emergence of resistance. Bioinformatic analysis based on maximum-likelihood phylogeny and Bayesian clustering of the CoNS genomes obtained in the current study and downloaded from public databases revealed the existence of international linezolid-resistant lineages, each of which probably had a common predecessor. Linezolid-resistant S. epidermidis sequence-type (ST) 2 from Russia, France, and Germany formed a compact group of closely related genomes with a median pairwise single nucleotide polymorphism (SNP) difference of fewer than 53 SNPs, and a common ancestor of this lineage appeared in 1998 (1986–2006) before introduction of linezolid in practice. Another compact group of linezolid-resistant S. epidermidis was represented by ST22 isolates from France and Russia with a median pairwise SNP difference of 40; a common ancestor of this lineage appeared in 2011 (2008–2013). Linezolid-resistant S. hominis ST2 from Russia, Germany, and Brazil also formed a group with a high-level genome identity with median 25.5 core-SNP differences; the appearance of the common progenitor dates to 2003 (1996–2012). Linezolid-resistant S. hominis isolates from Russia demonstrated associated resistance to teicoplanin. Analysis of a midpoint-rooted phylogenetic tree of the group confirmed the genetic proximity of Russian and German isolates; Brazilian isolates were phylogenetically distant. repUS5 -like plasmids harboring cfr were detected in S. hominis and S. haemolyticus .
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Global Expansion of Linezolid-Resistant Coagulase-Negative Staphylococci
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Autor/in / Beteiligte Person: | Gostev, Vladimir ; Leyn, Semen ; Kruglov, Alexander ; Likholetova, Daria ; Kalinogorskaya, Olga ; Baykina, Marina ; Dmitrieva, Natalia ; Grigorievskaya, Zlata ; Priputnevich, Tatiana ; Lyubasovskaya, Lyudmila ; Gordeev, Alexey ; Sidorenko, Sergey |
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Zeitschrift: | Frontiers in Microbiology ; volume 12 ; ISSN 1664-302X, 2021 |
Veröffentlichung: | Frontiers Media SA, 2021 |
Medientyp: | academicJournal |
DOI: | 10.3389/fmicb.2021.661798 |
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