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Guo Y, Liu F, Zhang Y, Wang X, Gao W, Xu B, Li Y, Song N. Virulence, antimicrobial resistance, and molecular characteristics of carbapenem-resistant Klebsiella pneumoniae in a hospital in Shijiazhuang City from China. Int Microbiol 2023; 26:1073-1085. [PMID: 37097488 PMCID: PMC10622345 DOI: 10.1007/s10123-023-00357-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 04/26/2023]
Abstract
Carbapenem-resistant Klebsiella pneumoniae (CRKP), as one of the most common drug-resistant bacteria threatening human health, is hyper-resistant to multiple antimicrobial drugs and carbapenems, which can be dealt with only limited clinical treatment options. This study described the epidemiological characteristics of CRKP in this tertiary care hospital from 2016 to 2020. Specimen sources included blood, sputum, alveolar lavage fluid, puncture fluid, secretions from a burn wound, and urine. Among the 87 carbapenem-resistant strains, ST11 was the predominant isolate, followed by ST15, ST273, ST340, and ST626. These STs were in broad agreement with the STs defined by pulsed-field gel electrophoresis clustering analysis in discriminating clusters of related strains. Most CRKP isolates contained the blaKPC-2 gene, some isolates carried the blaOXA-1, blaNDM-1, and blaNDM-5 genes, and the isolates carrying carbapenem resistance genes were more resistant to the antimicrobials of β-lactams, carbapenems, macrolides, and fluoroquinolone. The OmpK35 and OmpK37 genes were detected in all CRKP strains, and the Ompk36 gene was detected in some CRKP strains. All detected OmpK37 had 4 mutant sites, and OmpK36 had 11 mutant sites, while no mutant sites were found in OmpK35. More than half of the CRKP strains contained the OqxA and OqxB efflux pump genes. The virulence genes were most commonly combined with urea-wabG-fimH-entB-ybtS-uge-ycf. Only one CRKP isolate was detected with the K54 podoconjugate serotype. This study elucidated the clinical epidemiological features and molecular typing of CRKP, and grasped the distribution of drug-resistant genotypes, podocyte serotypes, and virulence genes of CRKP, providing some guidance for the subsequent treatment of CRKP infection.
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Affiliation(s)
- Yumei Guo
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Faqiang Liu
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
- Department of Infectious Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yulan Zhang
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Xiaoli Wang
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Weili Gao
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Baohong Xu
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Yuxue Li
- Department of Clinical Laboratory, Shijiazhuang People's Hospital, Shijiazhuang, China.
| | - Ning Song
- Department of Infectious Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
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Guo Y, Liu F, Zhang Y, Wang X, Gao W, Xu B, Li Y, Song N. Virulence, antimicrobial resistance, and molecular characteristics of carbapenem-resistant Klebsiella pneumoniae in a hospital in Shijiazhuang City from China. Int Microbiol 2023; 26:1073-1085. [PMID: 37097488 PMCID: PMC10622345 DOI: 10.1007/s10123-023-00357-x 10.1007/s10123-023-00357-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 03/27/2024]
Abstract
Carbapenem-resistant Klebsiella pneumoniae (CRKP), as one of the most common drug-resistant bacteria threatening human health, is hyper-resistant to multiple antimicrobial drugs and carbapenems, which can be dealt with only limited clinical treatment options. This study described the epidemiological characteristics of CRKP in this tertiary care hospital from 2016 to 2020. Specimen sources included blood, sputum, alveolar lavage fluid, puncture fluid, secretions from a burn wound, and urine. Among the 87 carbapenem-resistant strains, ST11 was the predominant isolate, followed by ST15, ST273, ST340, and ST626. These STs were in broad agreement with the STs defined by pulsed-field gel electrophoresis clustering analysis in discriminating clusters of related strains. Most CRKP isolates contained the blaKPC-2 gene, some isolates carried the blaOXA-1, blaNDM-1, and blaNDM-5 genes, and the isolates carrying carbapenem resistance genes were more resistant to the antimicrobials of β-lactams, carbapenems, macrolides, and fluoroquinolone. The OmpK35 and OmpK37 genes were detected in all CRKP strains, and the Ompk36 gene was detected in some CRKP strains. All detected OmpK37 had 4 mutant sites, and OmpK36 had 11 mutant sites, while no mutant sites were found in OmpK35. More than half of the CRKP strains contained the OqxA and OqxB efflux pump genes. The virulence genes were most commonly combined with urea-wabG-fimH-entB-ybtS-uge-ycf. Only one CRKP isolate was detected with the K54 podoconjugate serotype. This study elucidated the clinical epidemiological features and molecular typing of CRKP, and grasped the distribution of drug-resistant genotypes, podocyte serotypes, and virulence genes of CRKP, providing some guidance for the subsequent treatment of CRKP infection.
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Affiliation(s)
- Yumei Guo
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Faqiang Liu
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
- Department of Infectious Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yulan Zhang
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Xiaoli Wang
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Weili Gao
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Baohong Xu
- Hebei Provincial Key Research Laboratory of Intractable Bacteria, Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, China
| | - Yuxue Li
- Department of Clinical Laboratory, Shijiazhuang People's Hospital, Shijiazhuang, China.
| | - Ning Song
- Department of Infectious Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
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Cho YY, Kim JH, Kim H, Lee J, Im SJ, Ko KS. Comparison of Virulence between Two Main Clones (ST11 and ST307) of Klebsiella pneumoniae Isolates from South Korea. Microorganisms 2022; 10:microorganisms10091827. [PMID: 36144429 PMCID: PMC9504348 DOI: 10.3390/microorganisms10091827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/02/2022] [Accepted: 09/10/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, we investigate the characteristics of two main clones of carbapenemase-producing Klebsiella pneumoniae isolates from South Korea, ST11 and ST307, including carbapenem-susceptible isolates. Antibiotic susceptibility, serotype or wzi allelic type, the presence of virulence genes, and virulence with respect to serum resistance and macrophage internalization were determined for ST11 and ST307 isolates. ST11 isolates had a wide range of characteristics, including serotype and virulence, compared with those of homogeneous ST307 isolates. The wzi14 or K14 type had higher virulence than that of other serotypes among the ST11 isolates, and the homogeneous ST307 isolates showed similar virulence level as that of the wzi14-type ST11 isolates. Our data suggest that it is necessary to monitor not only the introduction and spread of a specific clone, but also its detailed serotype.
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Affiliation(s)
- Yun Young Cho
- Department of Microbiology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Jee Hong Kim
- Department of Microbiology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Hyunkeun Kim
- Department of Microbiology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Junghwa Lee
- Department of Precision Medicine, Graduate School of Basic Medical Science, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Se Jin Im
- Department of Immunology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
- Correspondence: (S.J.I.); (K.S.K.); Tel.: +82-31-299-6125 (S.J.I.); +82-31-299-6223 (K.S.K.)
| | - Kwan Soo Ko
- Department of Microbiology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
- Correspondence: (S.J.I.); (K.S.K.); Tel.: +82-31-299-6125 (S.J.I.); +82-31-299-6223 (K.S.K.)
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Hao Y, Jiang Y, Ishaq HM, Liu W, Zhao H, Wang M, Yang F. Molecular Characterization of Klebsiella pneumoniae Isolated from Sputum in a Tertiary Hospital in Xinxiang, China. Infect Drug Resist 2022; 15:3829-3839. [PMID: 35880230 PMCID: PMC9307913 DOI: 10.2147/idr.s370006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/15/2022] [Indexed: 11/23/2022] Open
Abstract
Background In clinical practice, Klebsiella pneumoniae (K. pneumoniae) is a common opportunistic pathogen responsible for nosocomial infection. This study aimed to analyze the trend of antimicrobial susceptibility and virulent characteristics of K. pneumoniae isolated from sputum. In clinics, data of the current study will help in the clinical treatment of K. pneumoniae infection. Results The current research showed the resistance rates of the 20 K. pneumoniae isolates against 13 antibiotics ranged from 15.0% to 80.0%. The detection rate of extended spectrum β-lactamases (ESBLs) was up to 55%, while blaSHV was the most prevalent ESBLs genes. Four strains (25.0%) of K. pneumoniae presented hypermucoviscous phenotype (HMV). Moreover, 18 strains (90.0%) showed the stronger biofilm-forming ability. wzi, wabG, fimH, mrkD were the most prevalent virulence genes in current research. Ten strains were found capsule typing and the higher genetic diversity of colonizing K. pneumoniae in this region. K19 exhibited a strong positive correlation with imipenem resistance, while K1 showed strong correlations with magA . Furthermore, HMV phenotype showed significantly negative correlations with multidrug-resistant. Conclusion In the hospital, the antibiotic resistance of K. pneumoniae (isolated from sputum samples) has a serious concern. Additionally, strains of K. pneumoniae show the higher genetic diversity.
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Affiliation(s)
- Yuqi Hao
- Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Yong'ang Jiang
- Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Hafiz Muhammad Ishaq
- Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan
| | - Wenke Liu
- Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Huajie Zhao
- Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Mingyong Wang
- Xinxiang Key Laboratory of Immunoregulation and Molecular Diagnostics, School of Laboratory Medicine, Xinxiang Medical University,, Xinxiang, People's Republic of China
| | - Fan Yang
- Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, People's Republic of China
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