Research Article: Identification of Two Novel Carbapenemase-Encoding Hybrid Plasmids Harboring blaNDM- and blaKPC- in a Clinical ST-KL Klebsiella pneumoniae
Abstract:
Carbapenem-resistant Klebsiella pneumoniae (CRKP) poses a serious threat to human health,, which can cause serious infections in debilitated or immunocompromised patients, leading to prolonged hospital stay and increased mortality rates. According to the data from the China Antimicrobial Resistance Surveillance System (CARSS), the national average isolation rate of CRKP is increasing rapidly from .% in to .% in . Notably, an extremely high incidence of CRKP was observed in Henan province in (.%), ranking first in China (http://www.carss.cn/Report/Details?aId=). The main resistance mechanism of CRKP is the production of carbapenemases. K. pneumoniae carbapenemases (KPC) and New Delhi ?-lactamases (NDMs) are the two common types of carbapenemases produced by CRKP, and KPC- is the most widely distributed KPC variant which is able to hydrolyze all ?-lactam antibiotics but can be inhibited by avibactam, a new approved diazabicyclooctane non-?-lactam ?-lactamase inhibitor for use in combination with ceftazidime. However, as metallo-?-lactamase belonged to class B ?-lactamases, NDMs cannot be inhibited by avibactam. It is worth noting that the recent emergence of CRKP co-producing KPC- and NDMs in different regions of China will seriously threaten the application of regimen of ceftazidime/avibactam in clinical treatment.– As the province with the highest isolation rate of CRKP in China, the prevalence and molecular characteristics of CRKP co-producing KPC and NDMs carbapenemases in Henan are still largely unknown.
Introduction:
Carbapenem-resistant Klebsiella pneumoniae (CRKP) poses a serious threat to human health, , which can cause serious infections in debilitated or immunocompromised patients, leading to prolonged hospital stay and increased mortality rates. According to the data from the China Antimicrobial Resistance Surveillance System (CARSS), the national average isolation rate of CRKP is increasing rapidly from .% in to .% in . Notably, an extremely high incidence of CRKP was observed in Henan province in (.%), ranking first in…
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