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Xie X, Liu Z, Huang J, Wang X, Tian Y, Xu P, Zheng G. Molecular epidemiology and carbapenem resistance mechanisms of Pseudomonas aeruginosa isolated from a hospital in Fujian, China. Front Microbiol 2024; 15:1431154. [PMID: 39301190 PMCID: PMC11410579 DOI: 10.3389/fmicb.2024.1431154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 08/05/2024] [Indexed: 09/22/2024] Open
Abstract
The worldwide spread of Pseudomonas aeruginosa, especially carbapenem-resistant P. aeruginosa (CRPA), poses a serious threat to global public health. In this research, we collected and studied the clinical prevalence, molecular epidemiology, and resistance mechanisms of CRPA in Fujian, China. Among 167 non-duplicated P. aeruginosa isolates collected during 2019-2021, strains from respiratory specimens and wound secretions of older males in the intensive care unit dominated. Ninety-eight isolates (58.7 %) were resistant to at least one tested antibiotic, among which 70 strains were carbapenem-resistant. Moleclar typing of the CRPA isolates revealed they were highly divergent, belonging to 46 different sequence types. It is noteworthy that two previously reported high risk clones, ST1971 specific to China and the globally prevalent ST357, were found. Several carbapenem resistance-related characteristics were also explored in 70 CRPA isolates. Firstly, carbapenemase was phenotypically positive in 22.9 % of CRPA, genetically predominant by metallo-β-lactamase (MBL) and co-carrige of different carbapenemase genes. Then, mutations of the carbapenem-specific porins oprD and opdP were commonly observed, with frequencies of 97.1% and 100.0%, respectively. Furthermore, the biofilm formation and relative transcription levels of 8 multidrug efflux pump genes were also found to be increased in 48.6 % and 72.9 % of CRPA isolates compared to the reference strain PAO1. These findings will help fill the data gaps in molecular characteristics of CRPA on the southeastern coast of China and emphasize the urgent need for data-based specific stewardship for antipseudomonal practices to prevent the dissemination of CRPA.
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Affiliation(s)
- Xueqin Xie
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
- Provincial Key Laboratory of Functional and Clinical Translational Medicine of Universities in Fujian, Xiamen Medical College, Xiamen, China
- Institute of Respiratory Disease, Xiamen Medical College, Xiamen, China
| | - Zhou Liu
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
- Provincial Key Laboratory of Functional and Clinical Translational Medicine of Universities in Fujian, Xiamen Medical College, Xiamen, China
- Institute of Respiratory Disease, Xiamen Medical College, Xiamen, China
| | - Jingyan Huang
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
| | - Xueting Wang
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
| | - Yuting Tian
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
| | - Pinying Xu
- Department of Basic Medical Science, Xiamen Medical College, Xiamen, China
| | - Gangsen Zheng
- Xiamen Key Laboratory of Genetic Testing, Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
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Islam MM, Kolling GL, Glass EM, Goldberg JB, Papin JA. Model-driven characterization of functional diversity of Pseudomonas aeruginosa clinical isolates with broadly representative phenotypes. Microb Genom 2024; 10:001259. [PMID: 38836744 PMCID: PMC11261902 DOI: 10.1099/mgen.0.001259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 05/20/2024] [Indexed: 06/06/2024] Open
Abstract
Pseudomonas aeruginosa is a leading cause of infections in immunocompromised individuals and in healthcare settings. This study aims to understand the relationships between phenotypic diversity and the functional metabolic landscape of P. aeruginosa clinical isolates. To better understand the metabolic repertoire of P. aeruginosa in infection, we deeply profiled a representative set from a library of 971 clinical P. aeruginosa isolates with corresponding patient metadata and bacterial phenotypes. The genotypic clustering based on whole-genome sequencing of the isolates, multilocus sequence types, and the phenotypic clustering generated from a multi-parametric analysis were compared to each other to assess the genotype-phenotype correlation. Genome-scale metabolic network reconstructions were developed for each isolate through amendments to an existing PA14 network reconstruction. These network reconstructions show diverse metabolic functionalities and enhance the collective P. aeruginosa pangenome metabolic repertoire. Characterizing this rich set of clinical P. aeruginosa isolates allows for a deeper understanding of the genotypic and metabolic diversity of the pathogen in a clinical setting and lays a foundation for further investigation of the metabolic landscape of this pathogen and host-associated metabolic differences during infection.
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Affiliation(s)
- Mohammad Mazharul Islam
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Glynis L. Kolling
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Emma M. Glass
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | | | - Jason A. Papin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, USA
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Islam MM, Kolling GL, Glass EM, Goldberg JB, Papin JA. Model-driven characterization of functional diversity of Pseudomonas aeruginosa clinical isolates with broadly representative phenotypes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.08.561426. [PMID: 37873245 PMCID: PMC10592701 DOI: 10.1101/2023.10.08.561426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Pseudomonas aeruginosa is a leading cause of infections in immunocompromised individuals and in healthcare settings. This study aims to understand the relationships between phenotypic diversity and the functional metabolic landscape of P. aeruginosa clinical isolates. To better understand the metabolic repertoire of P. aeruginosa in infection, we deeply profiled a representative set from a library of 971 clinical P. aeruginosa isolates with corresponding patient metadata and bacterial phenotypes. The genotypic clustering based on whole-genome sequencing of the isolates, multi-locus sequence types, and the phenotypic clustering generated from a multi-parametric analysis were compared to each other to assess the genotype-phenotype correlation. Genome-scale metabolic network reconstructions were developed for each isolate through amendments to an existing PA14 network reconstruction. These network reconstructions show diverse metabolic functionalities and enhance the collective P. aeruginosa pangenome metabolic repertoire. Characterizing this rich set of clinical P. aeruginosa isolates allows for a deeper understanding of the genotypic and metabolic diversity of the pathogen in a clinical setting and lays a foundation for further investigation of the metabolic landscape of this pathogen and host-associated metabolic differences during infection.
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Affiliation(s)
- Mohammad Mazharul Islam
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Glynis L. Kolling
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Emma M. Glass
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | | | - Jason A. Papin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
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Insights into mucoid Acinetobacter baumannii: A review of microbiological characteristics, virulence, and pathogenic mechanisms in a threatening nosocomial pathogen. Microbiol Res 2022; 261:127057. [DOI: 10.1016/j.micres.2022.127057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 01/25/2023]
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