Large-scale comparative analysis reveals phylogenomic preference of blaNDM-1 and blaKPC-2 transmission among Klebsiella pneumoniae.
Int J Antimicrob Agents
; 64(2): 107225, 2024 Aug.
Article
em En
| MEDLINE
| ID: mdl-38810941
ABSTRACT
blaNDM-1 and blaKPC-2 are responsible for the global increase in carbapenem-resistant Klebsiella pneumoniae, posing a great challenge to public health. However, the impact of phylogenetic factors on the dissemination of blaNDM-1 and blaKPC-2 is not yet fully understood. This study established a global dataset of 4051 blaNDM-1+ and 10,223 blaKPC-2+ K. pneumoniae genomes, and compared their transmission modes on a global scale. The results showed that blaNDM-1+ K. pneumoniae genomes exhibited a broader geographical distribution and higher sequence type (ST) richness than blaKPC-2+ genomes, indicating higher transmissibility of the blaNDM-1 gene. Furthermore, blaNDM-1+ genomes displayed significant differences in ST lineage, antibiotic resistance gene composition, virulence gene composition and genetic environments compared with blaKPC-2+ genomes, suggesting distinct dissemination mechanisms. blaNDM-1+ genomes were predominantly associated with ST147 and ST16, whereas blaKPC-2+ genomes were mainly found in ST11 and ST258. Significantly different accessory genes were identified between blaNDM-1+ and blaKPC-2+ genomes. The preference for blaKPC-2 distribution across certain countries, ST lineages and genetic environments underscores vertical spread as the primary mechanism driving the expansion of blaKPC-2. In contrast, blaNDM-1+ genomes did not display such a strong preference, confirming that the dissemination of blaNDM-1 mainly depends on horizontal gene transfer. Overall, this study demonstrates different phylogenetic drivers for the dissemination of blaNDM-1 and blaKPC-2, providing new insights into their global transmission dynamics.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Filogenia
/
Beta-Lactamases
/
Infecções por Klebsiella
/
Klebsiella pneumoniae
Limite:
Humans
Idioma:
En
Revista:
Int J Antimicrob Agents
Ano de publicação:
2024
Tipo de documento:
Article