Dataset Information

Epidemiological and Molecular Characteristics of bla _NDM-1 and bla _KPC-2 Co-Occurrence Carbapenem-Resistant Klebsiella pneumoniae.

ABSTRACT:

Objective

Carbapenem-resistant Klebsiella pneumoniae (CRKP) has emerged and spread worldwide. It can usually cause a serious threat complicating treatment options in clinical settings. However, treatment options are limited. The present study investigates the prevalence and genetic characteristics of bla _NDM-1 and bla _KPC-2 co-harboring clinical isolates of Klebsiella pneumoniae.

Methods

In this study, Multiplex polymerase chain reaction (PCR) was performed to detect the carbapenem-resistant genes, and the broth microdilution method was used to determine the minimum inhibitory concentrations (MICs) of antibacterial drugs. The transferability of carbapenem-resistant phenotypes was examined using filter mating assays. Overall, we used Illumina sequencing to evaluate the epidemiological and molecular characteristics of bla _NDM-1 and bla _KPC-2 (genes encoding carbapenemase) co-occurrence in CRKP strains.

Results

All strains exhibited resistance to carbapenems and other antibiotics. However, they were still susceptible to polymyxin E. Among them, 18 isolates were positive for bla _KPC-2, bla _NDM-1, and multiple virulence determinants, such as genes encoding the virulence factor aerobactin, yersiniabactin, and the regulator of the mucoid phenotype (rmpA and rmpA2). Whole genome sequencing revealed that the 18 CRKP strains belonged to ST11 and capsular serotype KL64, and could be grouped into two evolutionary branches. Furthermore, these strains displayed hypervirulence potential since all of them carried pLVPK-like plasmid.

Conclusion

These findings suggested that ST11-KL64 CRKP strains are major threats in terms of nosocomial infections in this hospital. Hence, new strategies should be urgently developed to monitor, diagnose, and treat this high-risk CRKP clone.

SUBMITTER: Rong F

PROVIDER: S-EPMC10120834 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Publications

Epidemiological and Molecular Characteristics of bla NDM-1 and bla KPC-2 Co-Occurrence Carbapenem-Resistant Klebsiella pneumoniae.

Rong Fang F Liu Ziyi Z Yang Pengbin P Wu Feng F Sun Yu Y Sun Xuewei X Zhou Jun J

Infection and drug resistance 20230417

<h4>Objective</h4>Carbapenem-resistant Klebsiella pneumoniae (CRKP) has emerged and spread worldwide. It can usually cause a serious threat complicating treatment options in clinical settings. However, treatment options are limited. The present study investigates the prevalence and genetic characteristics of bla NDM-1 and bla KPC-2 co-harboring clinical isolates of Klebsiella pneumoniae.<h4>Methods</h4>In this study, Multiplex polymerase chain re ...[more]

PMID: 37090038

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