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Research Article: Rapid Identification of Carbapenemase-Producing Klebsiella pneumoniae Using Headspace Solid-Phase Microextraction Combined with Gas Chromatography-Mass Spectrometry

Date Published: 2023-05-01

Abstract:
Klebsiella pneumoniae belongs to the genus Klebsiella, which is widespread in the environment and host-associated niches. K. pneumoniae has long been considered as opportunistic pathogen and remains the most common nosocomial pathogen worldwide., The treatment of K. pneumoniae infections has been complicated and limited by the emergence of antibiotic resistance, particularly to carbapenems. Carbapenem resistance in K. pneumoniae may be related to multiple mechanisms, including carbapenemase production and alterations in bacterial outer membrane permeability, combined with hyperproduction of other ?-lactamases (eg, extended spectrum ?-lactamase, AmpC ?-lactamase).– Notably, carbapenemase expression is the most common mechanism involved in CRKP, and the distribution of carbapenemase types carried by CRKP varied by country. In Europe, surveillance network data from to showed that among CRKP, K. pneunominae carbapenemase (KPC) producers were the most abundant, followed closely by oxacillinase (OXA)--like producers. In China, a multicenter genomic analysis of CRKP from to reported that KPC (/, .%) and New Dehli metallo-?-lactamase (NDM; /, .%) were the main carbapenemases detected in CRKP isolates.

Introduction:
Klebsiella pneumoniae belongs to the genus Klebsiella , which is widespread in the environment and host-associated niches. K. pneumoniae has long been considered as opportunistic pathogen and remains the most common nosocomial pathogen worldwide. , The treatment of K. pneumoniae infections has been complicated and limited by the emergence of antibiotic resistance, particularly to carbapenems. Carbapenem resistance in K. pneumoniae may be related to multiple mechanisms, including carbapenemase production and…

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