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- W3092018586 abstract "Pseudomonas aeruginosa global clones associated with multidrug-resistant (MDR) and extensively drug-resistant (XDR) phenotypes, denominated high-risk clones, are a growing threat in hospitals worldwide. Here we provide a 2020 update on nosocomial MDR/XDR high-risk P. aeruginosa clones. According to their prevalence, global spread and association with MDR/XDR profiles and regarding extended-spectrum β-lactamases (ESBLs) and carbapenemases, the worldwide top 10 P. aeruginosa high-risk clones includes ST235, ST111, ST233, ST244, ST357, ST308, ST175, ST277, ST654 and ST298. ST235 is certainly the most relevant high-risk clone, showing a worldwide dissemination associated with over 60 different β-lactamase variants, including multiple carbapenemases from classes A and B. Moreover, ST235 shows a highly virulent phenotype associated with a high mortality rate, likely due to the production of the ExoU cytotoxin. ST111 and ST233 are also worldwide disseminated MDR/XDR clones, particularly linked to VIM-2 metallo-β-lactamase (MBL), whereas ST244 is a very prevalent clone not always associated with MDR/XDR profiles. ST357, ST308 and ST298 are also exoU+ and are therefore potentially associated with higher virulence. In contrast, ST175, prevalent in some European countries, shows a MDR/XDR phenotype frequently caused by specific chromosomal mutations and is associated with lower virulence. Finally, ST277 is highly prevalent in Brazil and is specifically associated with the SPM MBL. A deeper understanding of the underlying factors driving the success of high-risk clones, including the reported increased capacity for acquiring exogenous determinants, increased spontaneous mutation rates or greater ability to develop biofilms, is required to develop global strategies to combat them." @default.
- W3092018586 created "2020-10-15" @default.
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- W3092018586 date "2020-12-01" @default.
- W3092018586 modified "2023-10-17" @default.
- W3092018586 title "Pseudomonas aeruginosa epidemic high-risk clones and their association with horizontally-acquired β-lactamases: 2020 update" @default.
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- W3092018586 doi "https://doi.org/10.1016/j.ijantimicag.2020.106196" @default.
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