Molecular and Clinical Characteristics of Carbapenem-Resistant Klebsiella pneumoniae Isolates at a Tertiary Hospital in Wuhan, China

Abstract

Background: Carbapenem resistant Klebsiella pneumoniae (CRKP) is an independent risk factor for nosocomial infection which poses a serious threat to human health. How to prevent and suppress CRKP infection and explore its drug resistance mechanisms have become a huge challenge and possesses immediate significance. Methods: A total of 45 CRKP strains isolated from hospitalized patients in Zhongnan Hospital of Wuhan University were collected from August 2018-December 2020. The strain's identification and antimicrobial susceptibility tests were performed using the VITEK 2 automated identification instrument. Single molecule DNA sequencing of 45 CRKP isolates was performed by the third generation high-throughput sequencing technology. Results:The results were analyzed by multi locus sequence typing (MLST) and phylogenetic analysis. Antimicrobial susceptibility showed that 45 CRKP isolates were multi-drug resistant strains, and the resistance rates to common antibiotics were as high as 68%. Whole genome sequencing results showed that the CRKP strains carried multiple drug resistance genes and virulence factors. MLST analysis found two different sequence types (ST), of which 44 were ST11 and 1 was ST1049. Conclusion: Through whole genome sequencing (WGS), we found multiple drug-resistant genes and virulence factors, and there was obvious dominant microbiota. The source was mainly related to nosocomial infection. The ST11-KPC Klebsiella pneumoniae was the main type, which was consistent with the most common type in China. We identified several dominant microbiotas which may serve as a target in the clinical prevention and treatment of severe bacterial infections. Our finding may have a role for guiding clinical antibiotic choosing.

The Situation of Antibiotic Resistance in Klebsiella Pneumoniae and Carbapenemase-Producing Klebsiella Pneumoniae in Vietnam: A Cross-Sectional Study

“…In 2022, a study in Wuhan, China discovered a similarity in CPKP resistance to some commonly used antibiotics; including ampicillin, ciprofloxacin, ceftriaxone, imipenem and PIP/ TAZ, with 100% resistance. However, this study found a significantly higher rate of resistance to amikacin and gentamicin, which were still susceptible in this study, with 86.67% for each 39 .…”

Genomic insights and antimicrobial resistance profiles of CRKP and non-CRKP isolates in a Beijing geriatric medical center: emphasizing the blaKPC-2 carrying high-risk clones and their spread

“…Research indicates that a variety of virulence factors, such as adhesins and siderophores, are closely linked to urinary and respiratory infections. Notably, yersiniabactin, associated with the siderophore transport system, has been identified as a significant virulence factor in pulmonary infections ( Ballén et al, 2021 ; Hu et al, 2023 ). In our study, we discovered that the CRKP KL47 strain predominantly harbors yersiniabactin related to iron ion transport and the siderophore system ( irp1 , ybts , et al), as well as enterobactin ( entA , entB , et al).…”