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Kim N, Ko SY, Park SY, Kim SY, Lee DE, Kwon KT, Kim YK, Lee JC. Clonal Distribution and Its Association With the Carbapenem Resistance Mechanisms of Carbapenem-Non-Susceptible Pseudomonas aeruginosa Isolates From Korean Hospitals. Ann Lab Med 2024; 44:410-417. [PMID: 38433574 PMCID: PMC11169769 DOI: 10.3343/alm.2023.0369] [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: 09/15/2023] [Revised: 11/09/2023] [Accepted: 02/12/2024] [Indexed: 03/05/2024] Open
Abstract
Background Carbapenem resistance in Pseudomonas aeruginosa is a serious global health problem. We investigated the clonal distribution and its association with the carbapenem resistance mechanisms of carbapenem-non-susceptible P. aeruginosa isolates from three Korean hospitals. Methods A total of 155 carbapenem-non-susceptible P. aeruginosa isolates collected between 2011 and 2019 were analyzed for sequence types (STs), antimicrobial susceptibility, and carbapenem resistance mechanisms, including carbapenemase production, the presence of resistance genes, OprD mutations, and the hyperproduction of AmpC β-lactamase. Results Sixty STs were identified in carbapenem-non-susceptible P. aeruginosa isolates. Two high-risk clones, ST235 (N=41) and ST111 (N=20), were predominant; however, sporadic STs were more prevalent than high-risk clones. The resistance rate to amikacin was the lowest (49.7%), whereas that to piperacillin was the highest (92.3%). Of the 155 carbapenem-non-susceptible isolates, 43 (27.7%) produced carbapenemases. Three metallo-β-lactamase (MBL) genes, blaIMP-6 (N=38), blaVIM-2 (N=3), and blaNDM-1 (N=2), were detected. blaIMP-6 was detected in clonal complex 235 isolates. Two ST773 isolates carried blaNDM-1 and rmtB. Frameshift mutations in oprD were identified in all isolates tested, regardless of the presence of MBL genes. Hyperproduction of AmpC was detected in MBL gene-negative isolates. Conclusions Frameshift mutations in oprD combined with MBL production or hyperproduction of AmpC are responsible for carbapenem resistance in P. aeruginosa. Further attention is required to curb the emergence and spread of new carbapenem-resistant P. aeruginosa clones.
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Affiliation(s)
- Nayeong Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seo Yeon Ko
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Yong Park
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Yeob Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Da Eun Lee
- Kyungpook National University Hospital National Culture Collection for Pathogens (KNUH-NCCP), Kyungpook National University Hospital, Daegu, Korea
| | - Ki Tae Kwon
- Kyungpook National University Hospital National Culture Collection for Pathogens (KNUH-NCCP), Kyungpook National University Hospital, Daegu, Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Yu Kyung Kim
- Kyungpook National University Hospital National Culture Collection for Pathogens (KNUH-NCCP), Kyungpook National University Hospital, Daegu, Korea
- Department of Laboratory Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Je Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Korea
- Kyungpook National University Hospital National Culture Collection for Pathogens (KNUH-NCCP), Kyungpook National University Hospital, Daegu, Korea
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Kim D, Jeong SH. Current status of multidrug-resistant bacteria. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2022. [DOI: 10.5124/jkma.2022.65.8.468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background: The dissemination of multidrug-resistant (MDR) pathogen is of major public health concern as it leads to increased mortality rate, length of hospital stays, and medical expenses.Current Concepts: Korean Government enacted an Infectious Disease Control and Prevention Act in 2009, and 6 MDR bacteria including methicillin-resistant Staphylococcus aureus, vancomycin-resistant S. aureus (VRSA), vancomycin-resistant enterococci, multidrug-resistant Pseudomonas aeruginosa, multidrug-resistant Acinetobacter baumannii, and carbapenem-resistant Enterobacterales (CRE) have been legally declared as infectious diseases. According to the amendment of the Infectious Disease Control and Prevention Act in 2020, CRE and VRSA were classified as class 2 infectious diseases, and all cases of CRE and VRSA should be reported to the Korea Disease Control and Prevention Agency (KDCA). Methicillin-resistant S. aureus, vancomycin-resistant enterococci, multidrug-resistant P. aeruginosa, and multidrug-resistant A. baumannii were classified as class 4 infectious diseases, and cases that occur need to be monitored at KDCA-designated sentinel hospitals to prevent further dissemination.Discussion and Conclusion: In this review, the current antimicrobial resistance status of six types of MDR bacteria, legally declared as infectious diseases, was investigated.. The Korean government is operating national antimicrobial resistance surveillance systems such as the Korean Antimicrobial Resistance Monitoring System and Korean Global Antimicrobial Surveillance System, as a foundation for preventing the spread of antimicrobial resistance. Certain steps need to be taken, such as establishing a surveillance system for antimicrobial usages, strengthening antimicrobial stewardship and infection control systems, and developing new antimicrobials in order for us to achieve the national goal.
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Park Y, Koo SH. Epidemiology, Molecular Characteristics, and Virulence Factors of Carbapenem-Resistant Pseudomonas aeruginosa Isolated from Patients with Urinary Tract Infections. Infect Drug Resist 2022; 15:141-151. [PMID: 35058697 PMCID: PMC8765443 DOI: 10.2147/idr.s346313] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/30/2021] [Indexed: 12/20/2022] Open
Abstract
Purpose Pseudomonas aeruginosa is an important pathogen that causes urinary tract infections. Carbapenems are the drugs of choice for the treatment of P. aeruginosa infections. However, the emergence and spread of carbapenem-resistant P. aeruginosa (CRPA) is a serious global health threat. In this study, we investigated the epidemiology, molecular characteristics, drug resistance, and virulence factors of CRPA isolated from urine samples. Methods A total of 124 P. aeruginosa isolates were obtained from urine samples collected between March 2020 and February 2021. Clonal relatedness was evaluated using multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). We performed antimicrobial susceptibility tests and investigated the presence of carbapenemase genes and virulence factors in CRPA isolates. Results The carbapenem resistance rate of the isolated P. aeruginosa was 46.7% (59/124). A total of 54 (91.5%) out of the 59 CRPA isolates were identified as multidrug-resistant. The majority of the CRPA isolates (81.4%, 48/59) harbored carbapenemase genes, such as blaIMP-6 or blaNDM-1. In an epidemiological analysis using MLST, 88.1% of CRPA isolates were confirmed to be ST773 (50.8%, 30/59) or ST235 (37.3%, 22/59). The CRPA isolates harboring blaIMP-6 and blaNDM-1 belonged to ST235 (PFGE pulsotypes E1-E18, F) and ST773 (PFGE pulsotypes H1-H2, I1-I16) subtypes, respectively. The studied CRPA isolates simultaneously harbored 10 to 14 virulence factors of the 16 virulence factors examined. Nine virulence factor genes (toxA, exoT, plcH, plcN, phzM, phzS, lasB, aprA, and algD) were identified in all CRPA isolates. Conclusion Our study shows that P. aeruginosa ST235 harboring blaIMP-6 and ST773 harboring blaNDM-1—known internationally as high-risk clones with multiple virulence factors—are widely spread in the study area. These findings suggest that continuous monitoring is necessary to prevent the further spread of carbapenemase-producing CRPA.
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Affiliation(s)
- Yumi Park
- Department of Laboratory Medicine, Konyang University College of Medicine and Myunggok Medical Research Center, Daejeon, Republic of Korea
- Department of Laboratory Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - Sun Hoe Koo
- Department of Laboratory Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
- Correspondence: Sun Hoe Koo Department of Laboratory Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon, 35015, Republic of KoreaTel +82-42-280-7798Fax +82-42-280-5365 Email
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Fonseca ÉL, Morgado SM, Caldart RV, Freitas F, Vicente ACP. Emergence of a VIM-2-producing XDR Pseudomonas aeruginosa ST309 in South America: a comparative genomic analysis. Int J Antimicrob Agents 2021; 59:106507. [PMID: 34958864 DOI: 10.1016/j.ijantimicag.2021.106507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/14/2021] [Accepted: 12/18/2021] [Indexed: 11/18/2022]
Abstract
Pseudomonas aeruginosa has been considered a top priority pathogen associated with elevated morbidity and mortality. Worldwide outbreaks have been associated with few high-risk epidemic P. aeruginosa lineages. However, the biological features involved with the persistence and spread of such lineages among clinical settings remain to be unraveled. This study reports the emergence of an XDR ST309 P. aeruginosa in South America/Brazil, more precisely, in the Amazon region. Genomic analyses were performed with 42 complete and draft ST309 genomes, giving insights into its epidemiology, resistome, and mobilome. Heterogeneous distribution of acquired antimicrobial resistance genes among ST309 genomes was observed, which included blaVIM-2, blaIMP-15, and qnrVC1, all of them associated with class 1 integrons. The mobilome mining showed the presence of Integrative and Conjugative Elements, transposons, and genomic islands harbouring a huge arsenal of heavy metal resistance determinants, which probably provided adaptive advantages to ST309 lineage.
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Affiliation(s)
- Érica L Fonseca
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (FIOCRUZ), Avenida Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil.
| | - Sérgio M Morgado
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (FIOCRUZ), Avenida Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | | | - Fernanda Freitas
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (FIOCRUZ), Avenida Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Ana Carolina P Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (FIOCRUZ), Avenida Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
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Emergence and Expansion of a Carbapenem-Resistant Pseudomonas aeruginosa Clone Are Associated with Plasmid-Borne bla KPC-2 and Virulence-Related Genes. mSystems 2021; 6:6/3/e00154-21. [PMID: 34006625 PMCID: PMC8269210 DOI: 10.1128/msystems.00154-21] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Pseudomonas aeruginosa is a major opportunistic pathogen and one of the leading bacterial species causing health care-associated infections. Carbapenems are the most effective antimicrobial agents for the treatment of severe infections caused by P. aeruginosa However, our recent surveillance demonstrated that the prevalence of carbapenem-resistant P. aeruginosa (CRPA) reached 38.67% in Zhejiang, China. By analyzing CRPA isolates collected from patients from 2006 to 2018, we found that 33% of CRPA isolates carried the gene bla KPC-2, which conferred high-level resistance to carbapenems and other β-lactams. In particular, a CRPA clone, ST463 (sequence type 463), emerged and has become the predominant CRPA clone among the population. Genome sequencing demonstrated that ST463 expansion was associated with plasmid-borne bla KPC-2 The mobile element flanking bla KPC-2, the type IV secretion system, and the successful expansion of clone ST463 might have further favored bla KPC-2 spread in P. aeruginosa Molecular clock analysis dated the emergence of clone ST463 to around 2007. Genome-wide association analysis showed that 567 genes were associated with clone ST463, including several known virulence genes related to the biosynthesis of lipooligosaccharide (LOS) O-antigens and exotoxin. These findings indicate that ST463 is expanding with plasmid-borne bla KPC-2 and virulence-related genes in nosocomial infections, and close surveillance should be undertaken in the future.IMPORTANCE Health care-associated infections, also known as nosocomial infections, are the most frequent adverse events in health care delivery worldwide, causing high rates of morbidity and mortality and high health care costs. Pseudomonas aeruginosa is one of the leading bacterial species causing health care-associated infections. Carbapenems are the most effective antimicrobial agents for the treatment of its severe infections. However, the prevalence of carbapenem-resistant P. aeruginosa (CRPA) has been increasing rapidly in recent years, and our surveillance demonstrated that the prevalence of CRPA reached 38.67% in Zhejiang, China. Genome sequencing of CRPA isolates over a decade showed that a CRPA clone (ST463) emerged recently. The clone is highly resistant to β-lactams, including carbapenems, and fluoroquinolones. Genome-wide association analysis showed that the clone expanded with virulence-related genes and the plasmid-borne carbapenem-resistant gene bla KPC-2 These findings are of significant public health importance, as the information will facilitate the control and minimization of CRPA nosocomial infections.
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Hong JS, Choi N, Kim SJ, Choi KH, Roh KH, Lee S. Molecular Characteristics of GES-Type Carbapenemase-Producing Pseudomonas aeruginosa Clinical Isolates from Long-Term Care Facilities and General Hospitals in South Korea. Microb Drug Resist 2019; 26:605-610. [PMID: 31800356 DOI: 10.1089/mdr.2019.0302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Since carbapenems have been used for the treatment of infections in medical settings, multidrug-resistant Pseudomonas aeruginosa containing resistance for carbapenems has become a major cause of nosocomial infections worldwide. Information on carbapenemase-producing P. aeruginosa isolates at community hospitals, including long-term care facilities and general hospitals, has rarely been reported in South Korea. The aims of this study were to describe the characteristics of seven carbapenemase-producing P. aeruginosa isolates recovered from two long-term care facilities in South Korea. The carbapenemase genes were identified by PCR and sequencing. Strain typing was assessed by pulsed field gel electrophoresis and multilocus sequence typing (MLST) analysis. Isolates with a genomic island and class I integron surrounding blaGES-type were confirmed by the PCR mapping method. Of seven GES-type carbapenemase-producing P. aeruginosa isolates, the blaGES-24 gene was detected in six isolates, and the blaGES-5 gene was detected in one isolate. The epidemiological relatedness of the seven isolates carrying blaGES-24 and blaGES-5 showed >81% similarity. Five isolates carrying blaGES-24 were sequence type 155 (ST155) by MLST, followed by one ST244 isolate carrying blaGES-24 and one ST308 isolate carrying blaGES-5. blaGES-type genes were embedded in two different class I integrons in a genomic island-15-like region. Our results indicate the possible spread of carbapenemase-producing P. aeruginosa and present a current threat of antimicrobial resistance in community hospitals.
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Affiliation(s)
- Jun Sung Hong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, South Korea
| | - Naeun Choi
- Center of Laboratory Medicine, Seegene Medical Foundation, Seoul, South Korea
| | - Si Jong Kim
- Center of Laboratory Medicine, Seegene Medical Foundation, Seoul, South Korea
| | - Kwang Hoo Choi
- Center of Molecular Diagnostics, Seegene Medical Foundation, Seoul, South Korea
| | - Kyoung Ho Roh
- Center of Molecular Diagnostics, Seegene Medical Foundation, Seoul, South Korea
| | - SunHwa Lee
- Center of Laboratory Medicine, Seegene Medical Foundation, Seoul, South Korea
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7
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Park BY, Mourad D, Hong JS, Yoon EJ, Kim D, Lee H, Jeong SH. Performance Evaluation of the Newly Developed BD Phoenix NMIC-500 Panel Using Clinical Isolates of Gram-Negative Bacilli. Ann Lab Med 2019; 39:470-477. [PMID: 31037866 PMCID: PMC6502954 DOI: 10.3343/alm.2019.39.5.470] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/12/2019] [Accepted: 04/21/2019] [Indexed: 11/19/2022] Open
Abstract
Background The emergence of carbapenem resistance among gram-negative bacilli (GNB), mediated by carbapenemase production, has necessitated the development of a simple and accurate device for detecting minimum inhibitory concentrations (MICs) and resistance mechanisms, especially carbapenemase production. We evaluated the performance of the BD Phoenix NMIC-500 panel (BD Diagnostic Systems, Sparks, MD, USA) for antimicrobial susceptibility testing (AST) and carbapenemase-producing organism (CPO) detection. Methods We used 450 non-duplicate clinical GNB isolates from six general hospitals in Korea (409 Enterobacteriaceae and 41 glucose non-fermenting bacilli [GNFB] isolates). AST for meropenem, imipenem, ertapenem, ceftazidime, and ceftazidime/avibactam, and CPO detection were performed using the Phoenix NMIC-500 panel. Broth microdilution was used as the reference method for AST. The rates of categorical agreement (CA), essential agreement (EA), minor error (mE), major error (ME), and very major error (VME) were calculated in each antimicrobial. In addition, PCR and sequencing were performed to evaluate the accuracy of CPO detection by the BD Phoenix NMIC-500 panel, and the rate of correct identification was calculated. Results The CA rates were >90% for all antimicrobials tested with the Enterobacteriaceae isolates, except for imipenem (87.2%). The GNFB CA rates ranged from 92.7% to 100% for all antimicrobials. The ME rates were 1.7% for Enterobacteriaceae and 0% for GNFB. The panel identified 97.2% (243/250) of the carbapenemase-producing isolates. Conclusions The BD Phoenix NMIC-500 panel shows promise for AST and CPO detection.
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Affiliation(s)
- Byeol Yi Park
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Demiana Mourad
- Department of Global Health Security, Graduate School of Public Health, Yonsei University, Seoul, Korea
| | - Jun Sung Hong
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Jeong Yoon
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Dokyun Kim
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
| | - Hyukmin Lee
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Hoon Jeong
- Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Chairat S, Ben Yahia H, Rojo-Bezares B, Sáenz Y, Torres C, Ben Slama K. High prevalence of imipenem-resistant and metallo-beta-lactamase-producing Pseudomonas aeruginosa in the Burns Hospital in Tunisia: detection of a novel class 1 integron. J Chemother 2019; 31:120-126. [PMID: 30849001 DOI: 10.1080/1120009x.2019.1582168] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pseudomonas aeruginosa is one of the most important causes of nosocomial infections, and its eradication is very difficult due to its multidrug resistance. The objective of the present study was to characterize the metallo-beta-lactamases (MBLs), integrons, OprD modifications and virulence factors of P. aeruginosa strains isolated from burn patients and to analyze their genetic relatedness by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). Sixty-seven P. aeruginosa isolates were recovered from different clinical samples of burn patients hospitalized in the Intensive Care Burn Unit of the Centre de Traumatologie et des Grands Brulés (Ben Arous, Tunisia), and MBLs and alterations in porin OprD were analyzed among imipenem-resistant isolates. Class 1 and 2 integrons were studied by PCR and sequencing of corresponding variable regions. The presence of eight genes involved in the virulence of P. aeruginosa was investigated by PCR. Fourteen of the 36 imipenem-resistant P. aeruginosa (IRPA) isolates (38.8%) were MBLs producers and harbored the blaVIM-2 gene, in all cases included into class 1 integrons. A new class 1 integron was identified (intI1-blaOXA-10-aadB-blaVIM-2-aadB-blaOXA-10). Five sequence types were detected among IRPA isolates: ST1, ST112, ST238, ST308 and ST395. P. aeruginosa is a major nosocomial pathogen in patients suffering burns, and the spreading of multidrugs resistant and MBL-producing isolates should be controlled in burn units. Moreover, the implantation of infection control guidelines is crucial to decrease the morbidity and mortality of nosocomial infections due to multidrug resistant P. aeruginosa.
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Affiliation(s)
- Sarra Chairat
- a Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis , Université de Tunis El Manar , Tunis , Tunisia
| | - Houssem Ben Yahia
- a Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis , Université de Tunis El Manar , Tunis , Tunisia
| | - Beatriz Rojo-Bezares
- b Área de Microbiología Molecular , Centro de Investigación Biomédica de La Rioja (CIBIR) , Logroño , Spain
| | - Yolanda Sáenz
- b Área de Microbiología Molecular , Centro de Investigación Biomédica de La Rioja (CIBIR) , Logroño , Spain
| | - Carmen Torres
- c Área de Bioquímica y Biología Molecular , Universidad de La Rioja , Logroño , Spain
| | - Karim Ben Slama
- a Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis , Université de Tunis El Manar , Tunis , Tunisia.,d Institut Supérieur des Sciences Biologiques Appliquées de Tunis , Université de Tunis El Manar , Tunis , Tunisia
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Papa-Ezdra R, Bado I, Caiata L, Vignoli R, Seija V. First report of Pseudomonas aeruginosa co-harbouring blaVIM-2 and blaPER-1 in Latin America. J Glob Antimicrob Resist 2018; 15:121-122. [DOI: 10.1016/j.jgar.2018.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/30/2018] [Accepted: 09/15/2018] [Indexed: 11/28/2022] Open
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Osawa K, Shigemura K, Kitagawa K, Fukuda T, Takasaka A, Wakabayashi S, Sato K, Yamamichi F, Shirakawa T, Fujisawa M. Molecular characteristics of carbapenem-resistant Pseudomonas aeruginosa isolated from urine in Hyogo, Japan. Int J Urol 2018; 26:127-133. [PMID: 30308701 DOI: 10.1111/iju.13818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 08/27/2018] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To investigate the molecular characteristics and epidemiology of metallo-β-lactamase-producing Pseudomonas aeruginosa from urine of urinary tract infection patients in Hyogo Prefecture, Japan. METHODS Carbapenem-resistant P. aeruginosa isolated from the urine of 21 urinary tract infection patients in three general hospitals in Hyogo Prefecture (Japan) were collected between 2007 and 2014. Their antibiotic susceptibilities, metallo-β-lactamase screening test, metallo-β-lactamase gene sequencing, multilocus sequence typing and repetitive-sequence-based polymerase chain reaction were determined for epidemiological analyses to investigate the genetic characteristics. RESULTS Out of 21 isolates, 13 (61.9%) were positive for metallo-β-lactamase. There were 11 (52.4%) isolates with IMP-1 in them, one (4.5%) isolate with IMP-7 and one (4.5%) isolate with VIM-1. Metallo-β-lactamase-positive isolates were mainly identified as ST235, and metallo-β-lactamase-negative isolates were STs 357, 277, 234, 439 and 639. Repetitive-sequence-based polymerase chain reaction showed metallo-β-lactamase-positive isolates were grouped in eight clusters, and ST235 isolates with IMP-1 from three hospitals belonging to the identical group I, the other ST235 isolates with IMP-7 and VIM-1 were from two hospitals belonging to group II. CONCLUSIONS Metallo-β-lactamase-positive P. aeruginosa of ST235 isolates with IPM-1 were mainly identified from the urine of urinary tract infection patients in Hyogo, Japan. A ST235 isolate with VIM-1 was found for the first time. Further investigation is necessary to follow the spread of metallo-β-lactamase-positive isolates.
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Affiliation(s)
- Kayo Osawa
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Katsumi Shigemura
- Division of Urology, Department of Organ Therapeutics, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Infectious Diseases, Department of International Health, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Koichi Kitagawa
- Division of Infectious Diseases, Department of International Health, Kobe University Graduate School of Health Sciences, Kobe, Japan.,Division of Translational Research for Biologics, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Advanced Medical Science, Kobe University Graduate School of Science, Technology and Innovation, Kobe, Japan
| | - Teruo Fukuda
- Division of Urology, Department of Organ Therapeutics, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ayaka Takasaka
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Sakie Wakabayashi
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Kanako Sato
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | | | - Toshiro Shirakawa
- Division of Urology, Department of Organ Therapeutics, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Infectious Diseases, Department of International Health, Kobe University Graduate School of Health Sciences, Kobe, Japan.,Division of Translational Research for Biologics, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Advanced Medical Science, Kobe University Graduate School of Science, Technology and Innovation, Kobe, Japan
| | - Masato Fujisawa
- Division of Urology, Department of Organ Therapeutics, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
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Ko KS. Antibiotic-resistant clones in Gram-negative pathogens: presence of global clones in Korea. J Microbiol 2018; 57:195-202. [PMID: 30552629 DOI: 10.1007/s12275-019-8491-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/01/2018] [Accepted: 10/02/2018] [Indexed: 12/26/2022]
Abstract
Antibiotic resistance is a global concern in public health. Antibiotic-resistant clones can spread nationally, internationally, and globally. This review considers representative antibiotic-resistant Gram-negative bacterial clones-CTX-M- 15-producing ST131 in Escherichia coli, extended-spectrum ß-lactamase-producing ST11 and KPC-producing ST258 in Klebsiella pneumoniae, IMP-6-producing, carbapenem-resistant ST235 in Pseudomonas aeruginosa, and OXA-23-producing global clone 2 in Acinetobacter baumannii-that have disseminated worldwide, including in Korea. The findings highlight the urgency for systematic monitoring and international cooperation to suppress the emergence and propagation of antibiotic resistance.
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Affiliation(s)
- Kwan Soo Ko
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
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12
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Bellés A, Bueno J, Rojo-Bezares B, Torres C, Javier Castillo F, Sáenz Y, Seral C. Characterisation of VIM-2-producing Pseudomonas aeruginosa isolates from lower tract respiratory infections in a Spanish hospital. Eur J Clin Microbiol Infect Dis 2018; 37:1847-1856. [DOI: 10.1007/s10096-018-3318-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/27/2018] [Indexed: 10/28/2022]
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Hyun JE, Chung TH, Hwang CY. Identification of VIM-2 metallo-β-lactamase-producing Pseudomonas aeruginosa
isolated from dogs with pyoderma and otitis in Korea. Vet Dermatol 2018; 29:186-e68. [DOI: 10.1111/vde.12534] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2018] [Indexed: 12/01/2022]
Affiliation(s)
- Jae-Eun Hyun
- Laboratory of Veterinary Dermatology and the Research Institute for Veterinary Science; College of Veterinary Medicine; Seoul National University; Seoul 08826 Korea
| | - Tae-Ho Chung
- Department of Companion Animal and Animal Resources Science; Joongbu University; Chungnam 32713 Korea
| | - Cheol-Yong Hwang
- Laboratory of Veterinary Dermatology and the Research Institute for Veterinary Science; College of Veterinary Medicine; Seoul National University; Seoul 08826 Korea
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Hong JS, Yoon EJ, Song W, Seo YB, Shin S, Park MJ, Jeong SH, Lee K. Molecular Characterization of Pseudomonas putida Group Isolates Carrying bla VIM-2 Disseminated in a University Hospital in Korea. Microb Drug Resist 2018; 24:627-634. [PMID: 29298123 DOI: 10.1089/mdr.2017.0257] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Pseudomonas putida group are Gram-negative bacilli with polar flagellation, which are ubiquitous in the environment, although they are rarely involved in human infections. The aim of this study was to identify the dissemination of VIM-2-producing P. putida group in clinical isolates from a hospital in Korea. Thirteen strains were collected from 2014 to 2015 for the study. The isolates were recovered from urine cultures of both inpatients and outpatients at the hospital. Minimum inhibitory concentrations of antibiotics were determined by Etest. Carbapenemase genes were amplified by polymerase chain reaction and sequenced. Pulsed-field gel electrophoresis was performed for strain typing. Whole-genome sequencing was carried out randomly for two strains chosen from each year of the study to analyze the plasmid structure carrying the blaVIM-2 genes. The 13 isolates carried nine different class I integrons harboring VIM-2 and were resistant to meropenem and imipenem (minimum inhibitory concentrations, ≥32 μg/ml), thus exhibiting a multidrug-resistant phenotype. The blaVIM-2 gene was located on a plasmid in seven of the isolates and on the chromosome in six isolates. Each case of the blaVIM-2 gene was disseminated by clonal spread, horizontal transfer, and was mostly an occasional occurrence. In this study, we demonstrated that multidrug-resistant P. putida group carrying VIM-2 has reemerged in human specimens in Korea.
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Affiliation(s)
- Jun Sung Hong
- 1 Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine , Seoul, Republic of Korea.,2 Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Eun-Jeong Yoon
- 2 Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Wonkeun Song
- 3 Department of Laboratory Medicine, Hallym University College of Medicine , Seoul, Republic of Korea
| | - Yu Bin Seo
- 4 Division of Infectious Diseases, Department of Internal Medicine, Hallym University College of Medicine , Seoul, Republic of Korea
| | - Saeam Shin
- 3 Department of Laboratory Medicine, Hallym University College of Medicine , Seoul, Republic of Korea
| | - Min-Jeong Park
- 3 Department of Laboratory Medicine, Hallym University College of Medicine , Seoul, Republic of Korea
| | - Seok Hoon Jeong
- 2 Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Kyungwon Lee
- 2 Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine , Seoul, Republic of Korea
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Ghasemian A, Salimian Rizi K, Rajabi Vardanjani H, Nojoomi F. Prevalence of Clinically Isolated Metallo-beta-lactamase-producing Pseudomonas aeruginosa, Coding Genes, and Possible Risk Factors in Iran. IRANIAN JOURNAL OF PATHOLOGY 2018; 13:1-9. [PMID: 29731790 PMCID: PMC5929383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 02/13/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND & OBJECTIVE The spread of carbapenem-resistant Pseudomonas aeruginosa is a global concern. Metallo-beta-lactamase (MBL) enzymes cause extensive drug resistance among Gram-negative bacteria. The current study aimed at determining the prevalence of MBL-producing P. aeruginosa in Iran. DATA EXTRACTION A total of 43 studies were found out of which 36 were adopted. Data were collected from Google, Google Scholar, Science Direct, PubMed, Scopus, Embase, and Sciverse. The terms "Pseudomonasaeruginosa", "metallo-beta-lactamase", "prevalence", "carbapenems", and "Iran" were searched. Data from the isolates not producing MBLs were excluded from the study. Data were analyzed with Graph Pad Prism 6, meta-analysis section. RESULTS According to the results of the current study, 36 surveys indicated that 55% of the clinically isolated P. aeruginosa in Iran were resistant to imipenem and meropenem, among which 37.72% were the MBL producers. Among genes encoding MBLs, blaVIM and blaIMP were predominant with the prevalence of 12.91%±11.01% and 12.50%±23.56%, respectively. No report of harboring blaNDM1 and blaSPM1 by P. aeruginosa was found, similar to most of the other countries in Asia. The prevalence of blaVIM and blaIMP from burn settings were 11.50%±3.5% and 24.65%±23%, respectively. Furthermore, the prevalence of these genes was not significantly different among burn and non-burn isolates (P=0.942 and P=0.597, respectively). Moreover, no relationship was observed between the MBL production and patients' age range. CONCLUSION Approximately half of P. aeruginosa isolates were carbapenem-resistant in Iran, and approximately half were the MBL producers. The blaVIM and blaIMP were the predominant MBLs among P. aeruginosa strains, while other genes were not found in P. aeruginosa. Moreover, there was no significant difference between blaVIM and blaIMP among burn and non-burn isolates. Due to the multiple drug resistance conferred by MBLs, detection and control of their spread alongside proper therapeutic regimens in hospitals and community settings are essential to prevent infection acquisition.
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Affiliation(s)
- Abdolmajid Ghasemian
- Microbiology Dept, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran,Dept. of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Kobra Salimian Rizi
- Dept. of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | | | - Farshad Nojoomi
- Microbiology Dept, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
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Lee JH, Bae IK, Lee CH, Jeong S. Molecular Characteristics of First IMP-4-Producing Enterobacter cloacae Sequence Type 74 and 194 in Korea. Front Microbiol 2017; 8:2343. [PMID: 29326660 PMCID: PMC5741837 DOI: 10.3389/fmicb.2017.02343] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/14/2017] [Indexed: 01/13/2023] Open
Abstract
The worldwide dissemination of carbapenemase-producing Enterobacteriaceae (CPE) has become a major therapeutic concern in clinical settings. Enterobacter cloacae is a major pathogen that causes serious hospital-acquired infections. We investigated the clinical characteristics and molecular mechanisms of the first IMP-4-producing E. cloacae clinical isolates in Korea. Five carbapenemase-producing E. cloacae strains out of 792 E. cloacae clinical isolates, which have been identified at a university hospital in Korea between March 2014 and February 2016, were included in this study. Antimicrobial susceptibilities to imipenem, meropenem, and ertapenem were tested using E-test. Carbapenemase determinant screening, genetic environment, and multilocus sequence typing were conducted using PCR and sequencing analysis. All isolates were not susceptible to at least one of the tested carbapenems and presented highly similar pulsed-field gel electrophoresis (PFGE) patterns, evidencing hospital-wide clonal dissemination. Among all isolates harboring the blaIMP-4 carbapenemase gene, four isolates identified as predominant ST74, also contained blaCMY−2. One strain, designated as rare ST194, carried blaCMY-1. The E. cloacae strain, harboring both blaIMP-4 and blaCMY-1, was resistant to all three tested carbapenems. The blaIMP-4 gene was located on a highly mobile class 1 integron, showing a new form of the blaIMP-4-qacG-aacA4 array. This is the first description of IMP-4-producing E. cloacae strains in Korea. This observation implicates the widespread of blaIMP-4 in Enterobacteriaceae clinical isolates and provides insights into the epidemic potential and clinical therapeutic importance of IMP-4-producing E. cloacae for healthcare-associated infections.
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Affiliation(s)
- Jong Ho Lee
- Department of Laboratory Medicine, Yeungnam University College of Medicine, Daegu, South Korea
| | - Il Kwon Bae
- Department of Dental Hygiene, College of Health and Welfare, Silla University, Busan, South Korea
| | - Chae Hoon Lee
- Department of Laboratory Medicine, Yeungnam University College of Medicine, Daegu, South Korea
| | - Seri Jeong
- Department of Laboratory Medicine, Kosin University College of Medicine, Busan, South Korea
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Antimicrobial Effects of β-Lactams on Imipenem-Resistant Ceftazidime-Susceptible Pseudomonas aeruginosa. Antimicrob Agents Chemother 2017; 61:AAC.00054-17. [PMID: 28373200 DOI: 10.1128/aac.00054-17] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/23/2017] [Indexed: 01/16/2023] Open
Abstract
We studied the resistance mechanism and antimicrobial effects of β-lactams on imipenem-resistant Pseudomonas aeruginosa isolates that were susceptible to ceftazidime as detected by time-kill curve methods. Among 215 P. aeruginosa isolates from hospitalized patients in eight hospitals in the Republic of Korea, 18 isolates (23.4% of 77 imipenem-resistant isolates) were imipenem resistant and ceftazidime susceptible. Multilocus sequence typing revealed diverse genotypes, which indicated independent emergence. These 18 isolates were negative for carbapenemase genes. All 18 imipenem-resistant ceftazidime-susceptible isolates showed decreased mRNA expression of oprD, and overexpression of mexB was observed in 13 isolates. In contrast, overexpression of ampC, mexD, mexF, or mexY was rarely found. Time-kill curve methods were applied to three selected imipenem-resistant ceftazidime-susceptible isolates at a standard inoculum (5 × 105 CFU/ml) or at a high inoculum (5 × 107 CFU/ml) to evaluate the antimicrobial effects of β-lactams. Inoculum effects were detected for all three β-lactam antibiotics, ceftazidime, cefepime, and piperacillin-tazobactam, against all three isolates. The antibiotics had significant killing effects in the standard inoculum, but no effects in the high inoculum were observed. Our results suggest that β-lactam antibiotics should be used with caution in patients with imipenem-resistant ceftazidime-susceptible P. aeruginosa infection, especially in high-inoculum infections such as endocarditis and osteomyelitis.
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Clonal Dissemination of Pseudomonas aeruginosa Sequence Type 235 Isolates Carrying blaIMP-6 and Emergence of blaGES-24 and blaIMP-10 on Novel Genomic Islands PAGI-15 and -16 in South Korea. Antimicrob Agents Chemother 2016; 60:7216-7223. [PMID: 27671068 DOI: 10.1128/aac.01601-16] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 09/10/2016] [Indexed: 01/25/2023] Open
Abstract
A total of 431 Pseudomonas aeruginosa clinical isolates were collected from 29 general hospitals in South Korea in 2015. Antimicrobial susceptibility was tested by the disk diffusion method, and MICs of carbapenems were determined by the agar dilution method. Carbapenemase genes were amplified by PCR and sequenced, and the structures of class 1 integrons surrounding the carbapenemase gene cassettes were analyzed by PCR mapping. Multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE) were performed for strain typing. Whole-genome sequencing was carried out to analyze P. aeruginosa genomic islands (PAGIs) carrying the blaIMP-6, blaIMP-10, and blaGES-24 genes. The rates of carbapenem-nonsusceptible and carbapenemase-producing P. aeruginosa isolates were 34.3% (148/431) and 9.5% (41/431), respectively. IMP-6 was the most prevalent carbapenemase type, followed by VIM-2, IMP-10, and GES-24. All carbapenemase genes were located on class 1 integrons of 6 different types on the chromosome. All isolates harboring carbapenemase genes exhibited genetic relatedness by PFGE (similarity > 80%); moreover, all isolates were identified as sequence type 235 (ST235), with the exception of two ST244 isolates by MLST. The blaIMP-6, blaIMP-10, and blaGES-24 genes were found to be located on two novel PAGIs, designated PAGI-15 and PAGI-16. Our data support the clonal spread of an IMP-6-producing P. aeruginosa ST235 strain, and the emergence of IMP-10 and GES-24 demonstrates the diversification of carbapenemases in P. aeruginosa in Korea.
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Li J, Zou M, Dou Q, Hu Y, Wang H, Yan Q, Liu WE. Characterization of clinical extensively drug-resistant Pseudomonas aeruginosa in the Hunan province of China. Ann Clin Microbiol Antimicrob 2016; 15:35. [PMID: 27215335 PMCID: PMC4877936 DOI: 10.1186/s12941-016-0148-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 05/09/2016] [Indexed: 01/09/2023] Open
Abstract
Background Pseudomonas aeruginosa strains that are classed as extensively drug resistant (XDR-PA) are resistant to all antibiotics except for one or two classes and are frequently the cause of hard-to-treat infections worldwide. Our study aimed to characterize clinical XDR-PA isolates recovered during 2011–2012 at nine hospitals in the Hunan province of China. Methods Thirty-seven non-repetitive XDR-PA strains from 37 patients were investigated for genes encoding antimicrobial resistance determinants, efflux pumps, outer membrane proteins, and movable genetic elements using polymerase chain reaction (PCR). The expression of genes encoding the efflux pump component MexA and the outer membrane protein OprD was measured using real-time PCR. In addition, clonal relatedness of these XDR-PA isolates was analyzed by pulsed-field gel electrophoresis (PFGE). Results Various genes encoding antimicrobial resistance determinants were found in all isolates. In particular, the blaTEM-1, blaCARB, armA, blaIMP-4, blaVIM-2, and rmtB, were found in 100, 37.8, 22, 22, 19 and 5 % of the isolates, respectively. Remarkably, two isolates coharbored blaIMP-4, blaVIM-2, and armA. In all 37 antibiotic-resistant strains, the relative expression of oprD was decreased while mexA was increased compared to the expression of these genes in antibiotic-susceptible P. aeruginosa strains. All of the XDR-PA isolates harbored class I integrons as well as multiple other mobile genetic elements, such as tnpU, tnp513, tnpA (Tn21), and merA. A high genotypic diversity among the strains was detected by PFGE. Conclusions Multiple antibiotic-resistance mechanisms contributed to the drug resistance of the XDR-PA isolates investigated in this study. Thus, the XDR-PA isolates in this area were not clonally related. Instead, multiple types of movable genetic elements were coharbored within each XDR-PA isolate, which may have aided the rapid development of these XDR-PA strains. This is the first report of XDR-PA strains that coharbor blaIMP-4, blaVIM-2, and armA.
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Affiliation(s)
- Jun Li
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China
| | - Mingxiang Zou
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China.
| | - Qingya Dou
- Department of Infection Control Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Yongmei Hu
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China
| | - Haichen Wang
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China
| | - Qun Yan
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China
| | - Wen' En Liu
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, No. 87, Xiangya Road; Kaifu District, Changsha, 410008, Hunan, China
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Sun F, Zhou D, Wang Q, Feng J, Feng W, Luo W, Zhang D, Liu Y, Qiu X, Yin Z, Chen W, Xia P. The first report of detecting the bla SIM-2 gene and determining the complete sequence of the SIM-encoding plasmid. Clin Microbiol Infect 2016; 22:347-351. [DOI: 10.1016/j.cmi.2015.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/07/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
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AHN MJ, JEONG SG, CHO GW. Antisenescence activity of G9a inhibitor BIX01294 on human bone marrow mesenchymal stromal cells. Turk J Biol 2016. [DOI: 10.3906/biy-1507-11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Khataminejad MR, Mirnejad R, Sharif M, Hashemi M, Sajadi N, Piranfar V. Antimicrobial Effect of Imipenem-Functionalized Fe 2O 3 Nanoparticles on Pseudomonas aeruginosa Producing Metallo β-lactamases. IRANIAN JOURNAL OF BIOTECHNOLOGY 2015; 13:43-47. [PMID: 28959309 DOI: 10.15171/ijb.1138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Resistant strains of Pseudomonas aeruginosa to imipenem was medical treatment problem, especially in burnt units of hospitals. OBJECTIVES This study was conducted to evaluate the antimicrobial effect of Fe2O3 nanoparticles alone and functionalized with imipenem on P. aeruginosa starins producing metallo β-lactamases (MBL). MATERIALS AND METHODS A disk diffusion method was used to isolate a clinical P. aeruginosa producing Metallo β-lactamases with imipenem resistance. The minimum inhibitory concentration (MIC) of Fe2O3 nanoparticles and imipenem were calculated against the bacteria. The antimicrobial effect of nanoparticles functionalized with the antibiotic was determined. Standard strain of P. aeruginosa ATCC: 27853 was used as control. RESULTS The clinical sample was resistant to imipenem (up to 28 μg.mL-1). Similarly, MIC of the nanoparticles against the isolate was 160 μg.mL-1. Subsequently, the combination of 16 pg.mL-1 of antibiotic with 80 μg.mL-1 of Fe2O3 nanoparticles were able to inhibit the growth of the isolate. CONCLUSIONS Fe2O3 nanoparticles functionalized with imipenem can impair antibiotic resistance mechanisms of bacteria as it can make the imipenem resistant the aforementioned bacterium more susceptible to weaker concentrations of antibiotic. It also has its own antibacterial effect in certain concentrations.
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Affiliation(s)
| | - Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Malike Sharif
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mojtaba Hashemi
- Department of Biology, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Nikita Sajadi
- Department of Microbiology, science and Research Islamic Azad University, Branch Damghan, Damghan, Iran
| | - Vahhab Piranfar
- Department of Biology, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran.,Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Dolejska M, Masarikova M, Dobiasova H, Jamborova I, Karpiskova R, Havlicek M, Carlile N, Priddel D, Cizek A, Literak I. High prevalence of Salmonella and IMP-4-producing Enterobacteriaceae in the silver gull on Five Islands, Australia. J Antimicrob Chemother 2015; 71:63-70. [PMID: 26472769 PMCID: PMC4681372 DOI: 10.1093/jac/dkv306] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/27/2015] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES The objective of this study was to investigate the silver gull as an indicator of environmental contamination by salmonellae and carbapenemase-producing Enterobacteriaceae (CPE) in south-east Australia. METHODS A total of 504 cloacal samples were collected from gull chicks at three nesting colonies in New South Wales, Australia [White Bay (n = 144), Five Islands (n = 200) and Montague Island (n = 160)] and were examined for salmonellae and CPE. Isolates were tested for carbapenemase genes and susceptibility to 14 antibiotics. Clonality was determined by PFGE and MLST. Genetic context and conjugative transfer of the carbapenemase gene were determined. RESULTS A total of 120 CPE of 10 species, mainly Escherichia coli (n = 85), carrying the gene blaIMP-4, blaIMP-38 or blaIMP-26 were obtained from 80 (40%) gulls from Five Islands. Thirty percent of birds from this colony were colonized by salmonellae. Most isolates contained the gene within a class 1 integron showing a blaIMP-4-qacG-aacA4-catB3 array. The blaIMP gene was carried by conjugative plasmids of variable sizes (80-400 kb) and diverse replicons, including HI2-N (n = 30), HI2 (11), A/C (17), A/C-Y (2), L/M (5), I1 (1) and non-typeable (6). Despite the overall high genetic variability, common clones and plasmid types were shared by different birds and bacterial isolates, respectively. CONCLUSIONS Our data demonstrate a large-scale transmission of carbapenemase-producing bacteria into wildlife, likely as a result of the feeding habits of the birds at a local waste depot. The isolates from gulls showed significant similarities with clinical isolates from Australia, suggesting the human origin of the isolates. The sources of CPE for gulls on Five Islands should be explored and proper measures applied to stop the transmission into the environment.
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Affiliation(s)
- Monika Dolejska
- Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Martina Masarikova
- Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Hana Dobiasova
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Ivana Jamborova
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Renata Karpiskova
- Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic
| | - Martin Havlicek
- Small Animal Specialist Hospital, Richardson Place 1/1, North Ryde, NSW 2113, Australia
| | - Nicholas Carlile
- Office of Environment and Heritage (NSW), PO Box 1967, Hurstville, NSW 2220, Australia
| | - David Priddel
- Office of Environment and Heritage (NSW), PO Box 1967, Hurstville, NSW 2220, Australia
| | - Alois Cizek
- Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Ivan Literak
- Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
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Oliver A, Mulet X, López-Causapé C, Juan C. The increasing threat of Pseudomonas aeruginosa high-risk clones. Drug Resist Updat 2015; 21-22:41-59. [PMID: 26304792 DOI: 10.1016/j.drup.2015.08.002] [Citation(s) in RCA: 402] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 08/04/2015] [Indexed: 01/01/2023]
Abstract
The increasing prevalence of chronic and hospital-acquired infections produced by multidrug-resistant (MDR) or extensively drug-resistant (XDR) Pseudomonas aeruginosa strains is associated with significant morbidity and mortality. This growing threat results from the extraordinary capacity of this pathogen for developing resistance through chromosomal mutations and from the increasing prevalence of transferable resistance determinants, particularly those encoding carbapenemases or extended-spectrum β-lactamases (ESBLs). P. aeruginosa has a nonclonal epidemic population structure, composed of a limited number of widespread clones which are selected from a background of a large quantity of rare and unrelated genotypes that are recombining at high frequency. Indeed, recent concerning reports have provided evidence of the existence of MDR/XDR global clones, denominated high-risk clones, disseminated in hospitals worldwide; ST235, ST111, and ST175 are likely those more widespread. Noteworthy, the vast majority of infections by MDR, and specially XDR, strains are produced by these and few other clones worldwide. Moreover, the association of high-risk clones, particularly ST235, with transferable resistance is overwhelming; nearly 100 different horizontally-acquired resistance elements and up to 39 different acquired β-lactamases have been reported so far among ST235 isolates. Likewise, MDR internationally-disseminated epidemic strains, such as the Liverpool Epidemic Strain (LES, ST146), have been noted as well among cystic fibrosis patients. Here we review the population structure, epidemiology, antimicrobial resistance mechanisms and virulence of the P. aeruginosa high-risk clones. The phenotypic and genetic factors potentially driving the success of high-risk clones, the aspects related to their detection in the clinical microbiology laboratory and the implications for infection control and public health are also discussed.
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Affiliation(s)
- Antonio Oliver
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Ctra. Valldemossa 79, 07010 Palma de Mallorca, Spain.
| | - Xavier Mulet
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Ctra. Valldemossa 79, 07010 Palma de Mallorca, Spain
| | - Carla López-Causapé
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Ctra. Valldemossa 79, 07010 Palma de Mallorca, Spain
| | - Carlos Juan
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Ctra. Valldemossa 79, 07010 Palma de Mallorca, Spain
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Hong DJ, Bae IK, Jang IH, Jeong SH, Kang HK, Lee K. Epidemiology and Characteristics of Metallo-β-Lactamase-Producing Pseudomonas aeruginosa. Infect Chemother 2015; 47:81-97. [PMID: 26157586 PMCID: PMC4495280 DOI: 10.3947/ic.2015.47.2.81] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Indexed: 12/18/2022] Open
Abstract
Metallo-β-lactamase-producing Pseudomonas aeruginosa (MPPA) is an important nosocomial pathogen that shows resistance to all β-lactam antibiotics except monobactams. There are various types of metallo-β-lactamases (MBLs) in carbapenem-resistant P. aeruginosa including Imipenemase (IMP), Verona integron-encoded metallo-β-lactamase (VIM), Sao Paulo metallo-β-lactamase (SPM), Germany imipenemase (GIM), New Delhi metallo-β-lactamase (NDM), Florence imipenemase (FIM). Each MBL gene is located on specific genetic elements including integrons, transposons, plasmids, or on the chromosome, in which they carry genes encoding determinants of resistance to carbapenems and other antibiotics, conferring multidrug resistance to P. aeruginosa. In addition, these genetic elements are transferable to other Gram-negative species, increasing the antimicrobial resistance rate and complicating the treatment of infected patients. Therefore, it is essential to understand the epidemiology, resistance mechanism, and molecular characteristics of MPPA for infection control and prevention of a possible global health crisis. Here, we highlight the characteristics of MPPA.
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Affiliation(s)
- Duck Jin Hong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Il Kwon Bae
- Department of Dental Hygiene, Silla University, Busan, Korea
| | - In-Ho Jang
- Department of Biomedical Laboratory Science, College of Health Sciences, Sangji University, Wonju, Korea
| | - Seok Hoon Jeong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun-Kyung Kang
- Department of Dental Hygiene, Silla University, Busan, Korea
| | - Kyungwon Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
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