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Simão FA, Almeida MM, Rosa HS, Marques EA, Leão RS. Genetic determinants of antimicrobial resistance in polymyxin B resistant Pseudomonas aeruginosa isolated from airways of patients with cystic fibrosis. Braz J Microbiol 2024; 55:1415-1425. [PMID: 38619733 PMCID: PMC11153443 DOI: 10.1007/s42770-024-01311-3] [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: 12/18/2023] [Accepted: 03/21/2024] [Indexed: 04/16/2024] Open
Abstract
Pseudomonas aeruginosa is the main pathogen associated with pulmonary exacerbation in patients with cystic fibrosis (CF). CF is a multisystemic genetic disease caused by mutations in the cystic fibrosis transmembrane conductance regulator gene, which mainly affects pulmonary function. P. aeruginosa isolated from individuals with CF in Brazil is not commonly associated with multidrug resistance (MDR), especially when compared to global occurrence, where the presence of epidemic clones, capable of expressing resistance to several drugs, is often reported. Due to the recent observations of MDR isolates of P. aeruginosa in our centers, combined with these characteristics, whole-genome sequencing was employed for analyses related to antimicrobial resistance, plasmid identification, search for phages, and characterization of CF clones. All isolates in this study were polymyxin B resistant, exhibiting diverse mutations and reduced susceptibility to carbapenems. Alterations in mexZ can result in the overexpression of the MexXY efflux pump. Mutations in oprD, pmrB, parS, gyrA and parC may confer reduced susceptibility to antimicrobials by affecting permeability, as observed in phenotypic tests. The phage findings led to the assumption of horizontal genetic transfer, implicating dissemination between P. aeruginosa isolates. New sequence types were described, and none of the isolates showed an association with epidemic CF clones. Analysis of the genetic context of P. aeruginosa resistance to polymyxin B allowed us to understand the different mechanisms of resistance to antimicrobials, in addition to subsidizing the understanding of possible relationships with epidemic strains that circulate among individuals with CF observed in other countries.
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Affiliation(s)
- Felipe A Simão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mila M Almeida
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Heloísa S Rosa
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Elizabeth A Marques
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robson S Leão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
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Padhy I, Dwibedy SK, Mohapatra SS. A molecular overview of the polymyxin-LPS interaction in the context of its mode of action and resistance development. Microbiol Res 2024; 283:127679. [PMID: 38508087 DOI: 10.1016/j.micres.2024.127679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 03/03/2024] [Accepted: 03/06/2024] [Indexed: 03/22/2024]
Abstract
With the rising incidences of antimicrobial resistance (AMR) and the diminishing options of novel antimicrobial agents, it is paramount to decipher the molecular mechanisms of action and the emergence of resistance to the existing drugs. Polymyxin, a cationic antimicrobial lipopeptide, is used to treat infections by Gram-negative bacterial pathogens as a last option. Though polymyxins were identified almost seventy years back, their use has been restricted owing to toxicity issues in humans. However, their clinical use has been increasing in recent times resulting in the rise of polymyxin resistance. Moreover, the detection of "mobile colistin resistance (mcr)" genes in the environment and their spread across the globe have complicated the scenario. The mechanism of polymyxin action and the development of resistance is not thoroughly understood. Specifically, the polymyxin-bacterial lipopolysaccharide (LPS) interaction is a challenging area of investigation. The use of advanced biophysical techniques and improvement in molecular dynamics simulation approaches have furthered our understanding of this interaction, which will help develop polymyxin analogs with better bactericidal effects and lesser toxicity in the future. In this review, we have delved deeper into the mechanisms of polymyxin-LPS interactions, highlighting several models proposed, and the mechanisms of polymyxin resistance development in some of the most critical Gram-negative pathogens.
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Affiliation(s)
- Indira Padhy
- Molecular Microbiology Lab, Department of Biotechnology, Berhampur University, Bhanja Bihar, Berhampur 760007, Odisha, India
| | - Sambit K Dwibedy
- Molecular Microbiology Lab, Department of Biotechnology, Berhampur University, Bhanja Bihar, Berhampur 760007, Odisha, India
| | - Saswat S Mohapatra
- Molecular Microbiology Lab, Department of Biotechnology, Berhampur University, Bhanja Bihar, Berhampur 760007, Odisha, India.
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Ishizaki Y, Umekita M, Arisaka R, Hatano M, Kimura T, Kubota Y, Shibuya Y, Hayashi C, Sawa R, Igarashi M. Cycloimidamicins, Novel natural lead compounds for translation inhibition in Pseudomonas aeruginosa. J Antibiot (Tokyo) 2023; 76:691-698. [PMID: 37758819 DOI: 10.1038/s41429-023-00656-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/23/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023]
Abstract
Pseudomonas aeruginosa is one of the most concerning pathogenic bacteria. We screened antibiotics using a highly drug-sensitive P. aeruginosa strain and an oligotrophic medium, and successfully isolated novel antibiotics, namely cycloimidamicins (CIMs), from a rare actinomycete strain, Lentzea sp. MM249-143F7. X-ray and nuclear magnetic resonance analyses revealed that CIMs possess a distinctive and unprecedented molecular structure, containing tetramic acid and an imidazole ring bound directly to indolone. The CIMs exhibited potent antibacterial activity against Gram-negative bacteria, as well as translation inhibition in Escherichia coli in both intact cells and in vitro. Additionally, E. coli strains resistant to known translation inhibitors did not exhibit cross-resistance to CIMs, suggesting that CIMs inhibit bacterial growth by blocking translation through a novel mechanism.
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Affiliation(s)
- Yoshimasa Ishizaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Maya Umekita
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Rie Arisaka
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Masaki Hatano
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Tomoyuki Kimura
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Yumiko Kubota
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Yuko Shibuya
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Chigusa Hayashi
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Ryuichi Sawa
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Masayuki Igarashi
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan.
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Zhao Y, Xie L, Wang C, Zhou Q, Jelsbak L. Comparative whole-genome analysis of China and global epidemic Pseudomonas aeruginosa high-risk clones. J Glob Antimicrob Resist 2023; 35:149-158. [PMID: 37709140 DOI: 10.1016/j.jgar.2023.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/15/2023] [Accepted: 08/31/2023] [Indexed: 09/16/2023] Open
Abstract
OBJECTIVES The various sequence types (STs) of Pseudomonas aeruginosa (P. aeruginosa) high-risk clones (HiRiCs) have been sporadically reported in China, but the systematic analysis of genomes for these STs remains limited. This study aimed to address the evolutionary pathways underlying the emergence of HiRiCs and their routes of dissemination from Chinese and global perspectives. METHODS The phylogenetic analysis was performed based on 416 newly sequenced clinical P. aeruginosa strains from Guangdong (GD), published genome sequences of 282 Chinese isolates, and 868 HiRiCs isolates from other countries. The genomic comparison study of global HiRiC ST244 was conducted to detect the model of global dissemination and local separation driven by association regional-specific antibiotic resistance genes. Furthermore, the evolutionary route of the emerging, China-specific HiRiC ST1971 was explored using Most Recent Common Ancestor (MRCA) analysis. RESULTS Based on comparative genomics analysis, we found a clear geographical separation of ST244 isolates, yet with an association between ST244 isolates from GD and America. We identified a set of 38 AMR genes that contribute to the geographical separation in ST244, and we identified genetic determinants either positively (MexB) and negatively (opmD) associated with GD ST244. For the China-unique HiRiC ST1971, its evolutionary history across different continents before emerging as ST1971 in China was also deduced. CONCLUSION This study provides insight into the specific genetics underlying regional differences among globally disseminated P. aeruginosa HiRiCs (ST244) as well as new understanding of the dissemination and evolution of a regional HiRiC (ST1971). Understanding the genetics of these and other HiRiCs may assist in controlling their emergence and further spread.
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Affiliation(s)
- Yonggang Zhao
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Lu Xie
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, Guangdong Province, China
| | - Chongzhi Wang
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Qian Zhou
- Department of Computer Science, City University of Hong Kong, Hong Kong, China.
| | - Lars Jelsbak
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark.
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Patil S, Pai L, Chen X, Francisco NM, Chen H, Chen Y, Dong S, Liu S, Wen F. Genomic characterisation of multi-drug resistant Escherichia coli and Klebsiella pneumoniae co-harbouring mcr-1 and mcr-3 genes on a single plasmid from paediatric clinical cases. J Glob Antimicrob Resist 2023; 34:134-140. [PMID: 37481113 DOI: 10.1016/j.jgar.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/30/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023] Open
Abstract
OBJECTIVES Emergence of the plasmid-born mobile colistin resistance (mcr) gene is a growing concern in healthcare. Therefore, this study aimed to genomically characterise multidrug-resistant Escherichia coli and Klebsiella pneumoniae co-harbouring the mcr-1 and mcr-3 genes in young children. METHODS E. coli (n = 3) and K. pneumoniae (n = 2) were collected from abdominal secretions and blood, respectively. The isolates were screened using tryptone soy broth with 4 µL/mL polymyxin-B. Growing bacteria were identified using the VITEK-2 system, matrix-assisted laser desorption/ionisation time-of-flight, and 16s RNA sequencing, followed by antibiotic susceptibility testing. Metallo-β-lactamase (MBL) and extended-spectrum β-lactamase (ESBL) production was also detected. Afterwards, strains were subjected to molecular screening targeting mcr variants and ESBL/MBL-encoding genes. Conjugation, pulsed-field gel electrophoresis, Southern hybridisation, multilocus sequence typing, and phylogenic group detection were performed, along with plasmid-genome sequencing and bioinformatics analysis. RESULTS E. coli isolates (EC-19-322, 323, and 331) and K. pneumoniae isolates (KP-19-225 and 226) harboured both mcr-1 and mcr-3 genes. These strains were also found to be resistant to more than three classes of antibiotics. The conjugation experiment revealed the presence of mcr-1 and mcr-3 on a single plasmid, and the transmission frequency was 10-2 to 10-3. Both strains were found to be able to produce ESBLs and MBL. E. coli EC-19-322 and 323 were identified as ST131(O25a:H41); SP-19-331, as ST1577 (O16:H30); and K. pneumoniae, as ST231 (K2). All E. coli strains belonged to phylogenetic group B2, and the results of pulsed-field gel electrophoresis supported the multilocus sequence typing findings. CONCLUSION This study reported the co-occurrence of mcr-1 and mcr-3 genes on a single plasmid in pathogenic ESBL/MBL-producing E. coli and K. pneumoniae isolated from young children.
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Affiliation(s)
- Sandip Patil
- Department of Haematology and Oncology, Shenzhen Children's Hospital, Shenzhen, China; Paediatric Research Institute, Shenzhen Children's Hospital, Shenzhen, China
| | - Liu Pai
- Department of Haematology and Oncology, Shenzhen Children's Hospital, Shenzhen, China
| | - Xiowen Chen
- Department of Haematology and Oncology, Shenzhen Children's Hospital, Shenzhen, China; Paediatric Research Institute, Shenzhen Children's Hospital, Shenzhen, China
| | - Ngiambudulu M Francisco
- Grupo de Investigação Microbiana e Imunológica, Instituto Nacional de Investigação em Saúde (National Institute for Health Research), Luanda, Angola
| | - Hongyu Chen
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China
| | - Yunsheng Chen
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China
| | - Shaowei Dong
- Paediatric Research Institute, Shenzhen Children's Hospital, Shenzhen, China
| | - Sixi Liu
- Department of Haematology and Oncology, Shenzhen Children's Hospital, Shenzhen, China.
| | - Feiqiu Wen
- Department of Haematology and Oncology, Shenzhen Children's Hospital, Shenzhen, China; Paediatric Research Institute, Shenzhen Children's Hospital, Shenzhen, China.
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Tsilipounidaki K, Gkountinoudis CG, Florou Z, Fthenakis GC, Miriagou V, Petinaki E. First Detection and Molecular Characterization of Pseudomonas aeruginosa blaNDM-1 ST308 in Greece. Microorganisms 2023; 11:2159. [PMID: 37764003 PMCID: PMC10537375 DOI: 10.3390/microorganisms11092159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
The objective of the present study is to report the detection and the molecular characterization of nine blaNDM-1-positive Pseudomonas aeruginosa isolates, all of which belonged to the epidemic high-risk international clone ST308, and all were isolated from patients in a tertiary care hospital in Central Greece from May to July 2023.The isolates were characterized by whole genome sequencing to obtain multi-locus sequencing typing (MLST) and identify the blaNDM1-environment and resistome and virulence genes content. In silico MLST analysis showed that all isolates belonged to the high-risk ST308 international clone. All strains possessed 22 different genes, encoding resistance to various antimicrobial agents. Whole genome sequencing revealed that the blaNDM-1 was chromosomally located within the integrative and conjugative element ICETn43716385 and that it was part of one cassette along with two other resistance genes, floR and msrE. Two additional resistance cassettes were also found in the genome, which included the arrays of aph(6)-Id, aph(3″)-Ib, floR, sul2 and aadA10, qnrVC1, aac(3)-Id, dfrB5, aac(6')-II. Additionally, the strains possessed various virulence genes, e.g., aprA, exoU, lasA, lasB, toxA, and estA. All of the isolates shared identical genomes, which showed 98% similarity with the P. aeruginosa ST308 genome (acc. no CP020703), previously reported from Singapore. To our knowledge, this is the first report of ST308 blaNDM-1-positive P. aeruginosa isolation in Europe, which indicates the transmission dynamics of this high-risk clone.
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Affiliation(s)
- Katerina Tsilipounidaki
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (C.-G.G.); (Z.F.)
| | | | - Zoi Florou
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (C.-G.G.); (Z.F.)
| | | | - Vivi Miriagou
- Laboratory of Bacteriology, Hellenic Pasteur Institute, 11521 Athens, Greece;
| | - Efthymia Petinaki
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (C.-G.G.); (Z.F.)
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Galindo-Méndez M, Navarrete-Salazar H, Pacheco-Vásquez R, Quintas-de la Paz D, Baltazar-Jiménez I, Santiago-Luna JD, Guadarrama-Monroy L. Detection of Plasmid-Mediated Resistance against Colistin in Multi-Drug-Resistant Gram-Negative Bacilli Isolated from a Tertiary Hospital. Microorganisms 2023; 11:1996. [PMID: 37630556 PMCID: PMC10458375 DOI: 10.3390/microorganisms11081996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/29/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
The aim of this study was to determine the prevalence of plasmid-mediated colistin resistance mcr-1 to mcr-5 genes among colistin and multi-drug-resistant Gram-negative bacilli strains isolated from patients in a tertiary hospital in Toluca, Mexico. The presence of mcr genes among the 241 strains collected was assessed by PCR. In the case of mcr-carrying E. coli, further PCR tests were performed to determine the presence of blaCTX-M and whether the strains belonged to the O25b-ST131 clone. Conjugation experiments were also carried out to assess the horizontal transmission of colistin resistance. A total of twelve strains (5.0%), of which four were E. coli; four were P. aeruginosa; three were K. pneumoniae, and one E. cloacae, were found to be resistant to colistin. Of these strains, two E. coli isolates were found to carry mcr-1, and Southern blot hybridization demonstrated its presence on an approximately 60 kb plasmid. Both mcr-1-carrying E. coli strains were found to co-express blaCTX-M, belong to the O25b-ST131 clone, and horizontally transmit their colistin resistance. The results of this study confirm the presence of plasmid-mediated colistin resistance in hospitalized patients in Mexico and demonstrated that the multi-drug-resistant O25b-ST131 E. coli clone can acquire mcr genes and transmit such resistance traits to other bacteria.
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Affiliation(s)
- Mario Galindo-Méndez
- Laboratorios Galindo SC, Av Juárez 501-A, Col Centro, Oaxaca 68000, Oax, Mexico
- School of Medicine, Universidad Anáhuac Oaxaca, Blvd. Guadalupe Hinojosa de Murat 1100, San Raymundo Jalpam 71248, Oax, Mexico
| | - Humberto Navarrete-Salazar
- School of Medicine, Universidad Anáhuac Oaxaca, Blvd. Guadalupe Hinojosa de Murat 1100, San Raymundo Jalpam 71248, Oax, Mexico
| | - Reinaldo Pacheco-Vásquez
- Centro Médico ISSEMYM Toluca, Av. Baja Velocidad KM. 57.5, Carr. Mex./Tol. Col. San Jeronimo Chicahualco, Metepec 52170, Edomex, Mexico
| | - Devanhí Quintas-de la Paz
- School of Medicine, Universidad Anáhuac Oaxaca, Blvd. Guadalupe Hinojosa de Murat 1100, San Raymundo Jalpam 71248, Oax, Mexico
| | - Isabel Baltazar-Jiménez
- School of Medicine, Universidad Anáhuac Oaxaca, Blvd. Guadalupe Hinojosa de Murat 1100, San Raymundo Jalpam 71248, Oax, Mexico
| | - José David Santiago-Luna
- School of Medicine, Universidad Anáhuac Oaxaca, Blvd. Guadalupe Hinojosa de Murat 1100, San Raymundo Jalpam 71248, Oax, Mexico
| | - Laura Guadarrama-Monroy
- Centro Médico ISSEMYM Toluca, Av. Baja Velocidad KM. 57.5, Carr. Mex./Tol. Col. San Jeronimo Chicahualco, Metepec 52170, Edomex, Mexico
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Patil S, Chen X, Dong S, Mai H, Lopes BS, Liu S, Wen F. Resistance genomics and molecular epidemiology of high-risk clones of ESBL-producing Pseudomonas aeruginosa in young children. Front Cell Infect Microbiol 2023; 13:1168096. [PMID: 37293207 PMCID: PMC10244630 DOI: 10.3389/fcimb.2023.1168096] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/24/2023] [Indexed: 06/10/2023] Open
Abstract
Introduction The emergence of multidrug-resistant Pseudomonas aeruginosa poses a global threat, but the distribution and resistance profiling are unclear, especially in young children. Infections due to P. aeruginosa are common, associated with high mortality, and increasingly β-lactam drug resistant. Methods We studied the molecular epidemiology and antibiotic resistance mechanisms in 294 clinicalisolates of P. aeruginosa from a pediatric hospital in China. Non-duplicate isolates were recovered from clinical cases and were identified using an API-20 kit followed by antimicrobial susceptibility testing using the VITEK®2 compact system (BioMerieux, France) and also by broth dilution method. In addition, a double-disc synergy test for the ESBL/E-test for MBL was performed. The presence of beta-lactamases, plasmid types, and sequence types was determined by PCR and sequencing. Results Fifty-six percent (n = 164) of the isolates were resistant to piperacillin-tazobactam, followed by cefepime (40%; n = 117), ceftazidime (39%; n = 115), imipenem (36%; n = 106), meropenem (33%; n = 97), and ciprofloxacin (32%; n = 94). Forty-two percent (n = 126) of the isolates were positive for ESBL according to the double-disc synergy test. The blaCTX-M-15 cephalosporinase was observed in 32% (n = 40/126), while 26% (n = 33/126) werepositive for blaNDM-1 carbapenemase. Aminoglycoside resistance gene aac(3)IIIawas observed in 16% (n = 20/126), and glycylcyclines resistance gene tet(A) was observed in 12% (n = 15/126) of the isolates. A total of 23 sequence types were detected, including ST1963 (12%; n = 16), followed by ST381 (11%; n = 14), ST234 (10%; n = 13), ST145 (58%; n = 10), ST304 (57%; n = 9), ST663 (5%; n = 7), and a novel strain. In ESBL-producing P. aeruginosa, 12 different Incompatibility groups (Inc) were observed, the most common being IncFI, IncFIS, and IncA/C. The MOBP was the most common plasmid type, followed by MOBH, MOBF, and MOBQ. Discussion Our data suggest that the spread of antibiotic resistance is likely due toclonal spread and dissemination of different clinical strains of P. aeruginosa harbouring different plasmids. This is a growing threat in hospitals particularly in young children which needs robust prevention strategies.
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Affiliation(s)
- Sandip Patil
- Department of Haematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, China
- Paediatric Research Institute, Shenzhen Children’s Hospital, Shenzhen, China
| | - Xiaowen Chen
- Paediatric Research Institute, Shenzhen Children’s Hospital, Shenzhen, China
| | - Shaowei Dong
- Paediatric Research Institute, Shenzhen Children’s Hospital, Shenzhen, China
| | - Huirong Mai
- Department of Haematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, China
| | - Bruno Silvester Lopes
- School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom
- National Horizons Centre, Teesside University, Darlington, United Kingdom
| | - Sixi Liu
- Department of Haematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, China
| | - Feiqiu Wen
- Department of Haematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, China
- Paediatric Research Institute, Shenzhen Children’s Hospital, Shenzhen, China
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Tang B, Guan C, Lin H, Liu C, Yang H, Zhao G, Yue M. Emergence of co-existence of mcr-1 and bla NDM-5 in Escherichia fergusonii. Int J Antimicrob Agents 2023; 61:106742. [PMID: 36736926 DOI: 10.1016/j.ijantimicag.2023.106742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/29/2022] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Affiliation(s)
- Biao Tang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products and Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Chunjiu Guan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products and Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China; School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Hui Lin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products and Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Canying Liu
- School of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Hua Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products and Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Guoping Zhao
- CAS Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Min Yue
- Hainan Institute, Zhejiang University, Hangzhou, China; Institute of Preventive Veterinary Sciences and Department of Veterinary Medicine, Zhejiang University College of Animal Sciences, Hangzhou, China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, National Medical Centre for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
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