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Motevasel M, Haghkhah M, Azimzadeh N. Phylogenetic Aspects of Antibiotic Resistance and Biofilm Formation of P. aeruginosa Isolated from Clinical Samples. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2024; 2024:6213873. [PMID: 38249645 PMCID: PMC10799695 DOI: 10.1155/2024/6213873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 11/18/2023] [Accepted: 12/08/2023] [Indexed: 01/23/2024]
Abstract
Introduction Biofilm production and drug resistance phenomenon play a critical role in P. aeruginosa infections. Several genes, including psl, pel, brlR, and mex, are involved in the phenomenon. The aim of this study was to find the relationship between the mentioned genes and the sources of P. aeruginosa infections. Materials and Methods Fifty-nine P. aeruginosa isolates detected from clinical specimens were used to determine antibiotic susceptibility patterns, prevalence of the genes using PCR, biofilm formation, biofilm eradication concentration assay (MBEC), and epidemiological characteristics using pulsed-field gel electrophoresis (PFGE). Results The results showed that 35.6% and 16.94% of all the samples were isolated from urine and wounds, 81.33% of the isolates were biofilm producers, 27.11% were multidrug-resistant (MDR), and 100% of the main biofilm former genes belonged to pslA. 94.91% of the isolates possessed brlR and mexA, and 91.5% of them expressed pslA. It was also indicated that neither ciprofloxacin nor imipenem could eradicate the formed biofilms. Moreover, we could identify 81.4% distinctive restriction profiles among the isolates, using an 80% similarity cutoff point; brlR and pel genes were significantly (P=0.032; P=0.044) related to phylogenetic pulsotypes. Comparison of the dendrogram in the isolates revealed that the detected isolates from urine were present in 12 different pulsotypes. Conclusion It was found that there was a relationship between MDR, biofilm production, and brlR and pel genes among the isolates. It is distinguished there were similar genetic patterns between detected isolates from urine and could be concluded that the urinary tract played a critical role in maintaining and transferring biofilm drug-resistant genes of P. aeruginosa in clinical sites. The study highlights the importance of urine in distribution of clinical biofilm formation and drug-resistant P. aeruginosa isolates.
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Affiliation(s)
- Maryam Motevasel
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
- Department of Laboratory Sciences, School of Paramedical Sciences, University of Medical Sciences, Shiraz, Iran
| | - Masoud Haghkhah
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Negar Azimzadeh
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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Büchler AC, Shahab SN, Severin JA, Vos MC, Voor In 't Holt AF. Outbreak investigations after identifying carbapenem-resistant Pseudomonas aeruginosa: a systematic review. Antimicrob Resist Infect Control 2023; 12:28. [PMID: 37013661 PMCID: PMC10068724 DOI: 10.1186/s13756-023-01223-1] [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: 12/13/2022] [Accepted: 02/23/2023] [Indexed: 04/05/2023] Open
Abstract
BACKGROUND Carbapenem-resistant Pseudomonas aeruginosa (CRPA) are a serious cause of healthcare-associated infections. Part of the infection prevention and control measures are outbreak investigations (OI) of patients, healthcare workers (HCW), and the environment after identifying a CRPA in order to identify carriers and environmental reservoirs, so that targeted actions can be taken to prevent further transmission. However, little is known on when and how to perform such OI. Therefore, this systematic review aims to summarize OI performed after detection of CRPA in the endemic and epidemic hospital setting. MAIN TEXT Articles related to our research question were identified through a literature research in multiple databases (Embase, Medline Ovid, Cochrane, Scopus, Cinahl, Web of Science, and Google Scholar) until January 12, 2022 (Prospero registration number CRD42020194165). Hundred-twenty-six studies were included. In both the endemic and the epidemic setting, a median number of two out of seven predefined components of OI were identified. In the endemic setting, the most frequent component of OI was screening of the environment (28 studies, 62.2%). In the epidemic setting, screening of the environment (72 studies, 88.9%), and screening of patients during hospitalization (30 studies, 37%) were most frequently performed. Only 19 out of 126 studies (15.1%) reported screening of contact patients, and 37 studies reported screening of healthcare workers (HCW, 29.4%). CONCLUSION Due to probable underreporting of OI in the literature, the available evidence for the usefulness of the individual components of OI is scarce. This could lead to inhomogeneous performance of OI after detection of CRPA in the healthcare setting, and with this, potential under- or overscreening. While we could show evidence for the usefulness for environmental screening in order to identify the mode of transmission, evidence for HCW screening is scarce and might not lead to the identification of modes of transmission. Further studies are needed to better understand CI in different settings and, finally, develop guidance on when and how to best perform OI.
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Affiliation(s)
- Andrea C Büchler
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Selvi N Shahab
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Clinical Microbiology, Dr. Cipto Mangunkusumo General Hospital - Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Juliëtte A Severin
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Margreet C Vos
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anne F Voor In 't Holt
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
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Martak D, Gbaguidi-Haore H, Meunier A, Valot B, Conzelmann N, Eib M, Autenrieth IB, Slekovec C, Tacconelli E, Bertrand X, Peter S, Hocquet D, Guther J. High prevalence of Pseudomonas aeruginosa carriage in residents of French and German long-term care facilities. Clin Microbiol Infect 2022; 28:1353-1358. [PMID: 35597505 DOI: 10.1016/j.cmi.2022.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/22/2022] [Accepted: 05/03/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To determine prevalence, incidence, and factors associated with Pseudomonas aeruginosa (PA) intestinal carriage in residents of long-term care facilities (LTCFs) and to understand the population structure of this pathogen in LTCFs from two European countries. METHODS We assessed the prevalence of PA intestinal carriage and the incidence of acquisition by collecting fecal samples from 403 residents of 20 LTCFs. We collected 289 environmental samples from sinks and drinking water. Factors associated with carriage and acquisition of intestinal PA were identified. All PA isolates had their antibiotic phenotypic resistance profile determined and their genome sequenced, from which we assessed the population structure of the collection and identified resistance determinants. RESULTS We found a high proportion of residents with PA intestinal carriage (51.6%) over the entire study period. Over the follow-up period, 28.6% of the residents acquired intestinal PA. Older age (Odds ratio [OR] = 1.29, 95% confidence interval [CI]: 1.09-1.52; p = 0.002), urinary incontinence (OR = 2.56, 95% CI: 1.37-4.88; p = 0.003), and male gender (OR = 2.55), 95% CI: 1.05-6.18; p = 0.039) were associated with higher probability of carriage. Wheelchair usage (OR = 4.56, 95% CI: 1.38-15.05; p = 0.013) and a body mass index >25 (OR = 3.71, 95% CI: 1.17-11.82; p = 0.026) were associated with higher risk of PA acquisition. Population structure of our isolates was mainly non-clonal with 112 different STs among the 241 isolates. Most represented STs were high risk clones ST253 (n=26), ST17 (n=11), ST244 (n=11), ST309 (n=10), and ST395 (n=10). Most PA isolates (86.3%) were susceptible to antibiotics, with no acquired genes conferring resistance to antipseudomonal agents. CONCLUSIONS We found an unexpected high prevalence of PA intestinal carriage in LTCF residents mainly associated with individual-level factors. Our study revealed a polyclonal PA population structure suggesting that individual acquisition is more frequent than resident-to-resident transmission.
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Affiliation(s)
- Daniel Martak
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France.
| | - Houssein Gbaguidi-Haore
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France
| | - Alexandre Meunier
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France
| | - Benoit Valot
- UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France
| | - Nadine Conzelmann
- Infectious Diseases, Dept. of Internal Medicine I, University Hospital Tübingen, Tübingen, Germany
| | - Michael Eib
- Institute of Medical Microbiology and Hygiene, University Hospital Tübingen, Tübingen, Germany
| | - Ingo B Autenrieth
- University Hospital Heidelberg, Im Neuenheimer Feld 672, 69120 Heidelberg, Germany
| | - Céline Slekovec
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France
| | - Evelina Tacconelli
- Infectious Diseases, Department of Diagnostics and Public Health, University of Verona, Italy
| | - Xavier Bertrand
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France
| | - Silke Peter
- Institute of Medical Microbiology and Hygiene, University Hospital Tübingen, Tübingen, Germany
| | - Didier Hocquet
- Service d'Hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France; UMR 6249 Chrono-environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France; Centre de Ressources Biologiques - Filière Microbiologique de Besançon, Centre Hospitalier Universitaire, Besançon, France
| | - Julia Guther
- Institute of Medical Microbiology and Hygiene, University Hospital Tübingen, Tübingen, Germany
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Falodun OI, Ikusika EO, Musa IB, Oyelade AA. Extended-spectrum beta-lactamase genes distribution in Pseudomonas species from livestock samples in Ibadan, Nigeria. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Exogenous acquisition of Pseudomonas aeruginosa in intensive care units: a prospective multi-centre study (DYNAPYO study). J Hosp Infect 2020; 104:40-45. [DOI: 10.1016/j.jhin.2019.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/06/2019] [Indexed: 12/29/2022]
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Carbapenem-resistant Pseudomonas Aeruginosa Originating from Farm Animals and People in Egypt. J Vet Res 2019; 63:333-337. [PMID: 31572812 PMCID: PMC6749737 DOI: 10.2478/jvetres-2019-0049] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 07/24/2019] [Indexed: 02/01/2023] Open
Abstract
Introduction Carbapenem-resistant Pseudomonas aeruginosa (CRPA) has become the leading cause of health care-associated infections. Treatment is difficult due to the lack of an effective antimicrobial therapy, and mortality is high. This study investigated the occurrence of CRPA in farm animals (buffaloes and cattle), livestock drinking water, and humans in Egypt. Material and Methods A total of 180 samples were examined: 50 faecal each from buffaloes and cattle, 30 of livestock drinking water, and 50 stool from humans. The samples were cultured on cetrimide agar and the plates were incubated aerobically at 37°C for 24 h. The isolates were examined for the presence of the blaKPC, blaOXA-48, and blaNDM carbapenemase-encoding genes using PCR and investigated for the exotoxin A (toxA) gene. The toxA gene from carbapenem- group resistant isolates was phylogenetically analysed. Results P. aeruginosa was isolated from buffaloes, cattle, drinking water, and humans, with occurrences of 40%, 34%, 10%, and 20%, respectively. Carbapenem resistance genes were found in 60%, 59%, 67%, and 70% in buffalo, cattle, water and human samples, respectively. The toxA gene was detected in 80% of samples. The phylogenetic analysis showed that cattle and water sequences were in one cluster and more related to each other than to human isolates. Conclusion Occurrence of CRPA among farm animals, drinking water, and humans was high, reflecting the environmental origin of P. aeruginosa and highlighting contaminated water as a potential transmitter of CRPA to livestock and next to humans.
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Pourakbari B, Movahedi Z, Mahmoudi S, Sabouni F, Ashtiani MTH, Sadeghi RH, Mamishi S. Genotypic characteristics of Pseudomonas aeruginosa strains circulating in the tertiary referral Children's Medical Hospital in Tehran, Iran. Br J Biomed Sci 2019. [DOI: 10.1080/09674845.2012.12069147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- B. Pourakbari
- Pediatrics Infectious Diseases Research Center, Tehran University of Medical Sciences
| | - Z. Movahedi
- Department of Infectious Disease, School of Medicine, Qom University of Medical Sciences
| | - S. Mahmoudi
- Pediatrics Infectious Diseases Research Center, Tehran University of Medical Sciences
| | - F. Sabouni
- Department of Pediatric Infectious Disease, School of Medicine Tehran University of Medical Sciences
| | - M. T. H. Ashtiani
- Department of Pathology, School of Medicine, Tehran University of Medical Sciences, Iran
| | - R. H. Sadeghi
- Pediatrics Infectious Diseases Research Center, Tehran University of Medical Sciences
| | - S. Mamishi
- Pediatrics Infectious Diseases Research Center, Tehran University of Medical Sciences
- Department of Pediatric Infectious Disease, School of Medicine Tehran University of Medical Sciences
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Courtois N, Caspar Y, Maurin M. Phenotypic and genetic resistance traits of Pseudomonas aeruginosa strains infecting cystic fibrosis patients: A French cohort study. Int J Antimicrob Agents 2018; 52:358-364. [DOI: 10.1016/j.ijantimicag.2018.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 04/09/2018] [Accepted: 05/08/2018] [Indexed: 11/16/2022]
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9
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Gallah S, Benzerara Y, Tankovic J, Woerther PL, Bensekri H, Mainardi JL, Arlet G, Vimont S, Garnier M. β LACTA test performance for detection of extended-spectrum β-lactamase-producing Gram-negative bacilli directly on bronchial aspirates samples: a validation study. Clin Microbiol Infect 2018; 24:402-408. [DOI: 10.1016/j.cmi.2017.07.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/08/2017] [Accepted: 07/26/2017] [Indexed: 01/15/2023]
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Haviari S, Cassier P, Dananché C, Hulin M, Dauwalder O, Rouvière O, Bertrand X, Perraud M, Bénet T, Vanhems P. Outbreak of Achromobacter xylosoxidans and Ochrobactrum anthropi Infections after Prostate Biopsies, France, 2014. Emerg Infect Dis 2018; 22:1412-9. [PMID: 27434277 PMCID: PMC4982167 DOI: 10.3201/eid2208.151423] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We report an outbreak of healthcare-associated prostatitis involving rare environmental pathogens in immunocompetent patients undergoing transrectal prostate biopsies at Hôpital Édouard Herriot (Lyon, France) during August 13-October 10, 2014. Despite a fluoroquinolone-based prophylaxis, 5 patients were infected with Achromobacter xylosoxidans and 3 with Ochrobactrum anthropi, which has not been reported as pathogenic in nonimmunocompromised persons. All patients recovered fully. Analysis of the outbreak included case investigation, case-control study, biopsy procedure review, microbiologic testing of environmental and clinical samples, and retrospective review of hospital records for 4 years before the outbreak. The cases resulted from asepsis errors during preparation of materials for the biopsies. A low-level outbreak involving environmental bacteria was likely present for years, masked by antimicrobial drug prophylaxis and a low number of cases. Healthcare personnel should promptly report unusual pathogens in immunocompetent patients to infection control units, and guidelines should explicitly mention asepsis during materials preparation.
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Guy M, Vanhems P, Dananché C, Perraud M, Regard A, Hulin M, Dauwalder O, Bertrand X, Crozon-Clauzel J, Floccard B, Argaud L, Cassier P, Bénet T. Outbreak of pulmonary Pseudomonas aeruginosa and Stenotrophomonas maltophilia infections related to contaminated bronchoscope suction valves, Lyon, France, 2014. ACTA ACUST UNITED AC 2017; 21:30286. [PMID: 27458712 DOI: 10.2807/1560-7917.es.2016.21.28.30286] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 03/29/2016] [Indexed: 11/20/2022]
Abstract
In April 2014, pulmonary Pseudomonas aeruginosa and Stenotrophomonas maltophilia co-infections potentially related to bronchoscopic procedures were identified in the intensive care units of a university hospital in Lyon, France. A retrospective cohort of 157 patients exposed to bronchoscopes from 1 December 2013 to 17 June 2014 was analysed. Environmental samples of suspected endoscopes were cultured. Bronchoscope disinfection was reviewed. Ten cases of pulmonary P. aeruginosa/S. maltophilia co-infections were identified, including two patients with secondary pneumonia. Eight cases were linked to bronchoscope A1 and two to bronchoscope A2. Cultures deriving from suction valves were positive for P. aeruginosa/S. maltophilia. Exposure to bronchoscopes A1 and A2 was independently coupled with increased risk of co-infection (adjusted odds ratio (aOR) = 84.6; 95% confidence interval (CI): 9.3-771.6 and aOR = 11.8, 95% CI: 1.2-121.3). Isolates from suction valves and clinical samples presented identical pulsotypes. The audit detected deficiencies in endoscope disinfection. No further cases occurred after discontinuation of the implicated bronchoscopes and change in cleaning procedures. This outbreak of pulmonary P. aeruginosa/S. maltophilia co-infections was caused by suction valve contamination of two bronchoscopes of the same manufacturer. Our findings underscore the need to test suction valves, in addition to bronchoscope channels, for routine detection of bacteria.
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Affiliation(s)
- Marine Guy
- Infection Control and Epidemiology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
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Lefebvre A, Bertrand X, Quantin C, Vanhems P, Lucet JC, Nuemi G, Astruc K, Chavanet P, Aho-Glélé LS. Association between Pseudomonas aeruginosa positive water samples and healthcare-associated cases: nine-year study at one university hospital. J Hosp Infect 2016; 96:238-243. [PMID: 28189270 DOI: 10.1016/j.jhin.2016.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/08/2016] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To study the association between the results of water samples and Pseudomonas aeruginosa healthcare-associated cases in a French university hospital. METHODS Generalized Estimating Equations were used on complete case and imputed datasets. The spatial unit was the building and the time unit was the quarter. RESULTS For the period 2004-2013, 2932 water samples were studied; 17% were positive for P. aeruginosa. A higher incidence of P. aeruginosa cases was associated with a higher proportion of positive water samples (P=0.056 in complete case analysis and P=0.031 with the imputed dataset). The association was no longer observed when haematology and intensive care units were excluded, but was significant in analyses of data concerning intensive care units alone (P<0.001). CONCLUSION This study suggests that water outlet contamination in hospitals can lead to an increase in healthcare-associated P. aeruginosa cases in wards dealing with susceptible patients, but does not play a significant role in other wards.
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Affiliation(s)
- A Lefebvre
- Service d'épidémiologie et hygiène hospitalières, CHU Dijon, France; Laboratoire Microbiologie Environnementale et Risques Sanitaires, Dijon, France.
| | - X Bertrand
- Université Paris Diderot, Paris, France; Service d'hygiène, CHU Besançon, France
| | - C Quantin
- Biostatistics and Bioinformatics (DIM), University Hospital, Bourgogne Franche-Comté University, Dijon, France; INSERM, CIC 1432, Dijon University Hospital, Clinical Investigation Center, Clinical Epidemiology/Clinical Trials Unit, Dijon, France; Biostatistics, Biomathematics, Pharmacoepidemiology and Infectious Diseases (B2PHI), INSERM, UVSQ, Institut Pasteur, Université Paris-Saclay, Paris, France
| | - P Vanhems
- Service d'Hygiène Hospitalière, Epidémiologie et Prévention, groupe hospitalier Edouard Herriot, Lyon, France
| | - J-C Lucet
- Equipe d'épidémiologie et santé publique, Université Claude Bernard, Lyon, France; UHLIN, groupe hospitalier Bichat - Claude Bernard, HUPNVS, AP-HP, Paris, France
| | - G Nuemi
- Biostatistics and Bioinformatics (DIM), University Hospital, Bourgogne Franche-Comté University, Dijon, France; INSERM, CIC 1432, Dijon University Hospital, Clinical Investigation Center, Clinical Epidemiology/Clinical Trials Unit, Dijon, France
| | - K Astruc
- Service d'épidémiologie et hygiène hospitalières, CHU Dijon, France
| | - P Chavanet
- Laboratoire Chrono-environnement, UMR CNRS 6249, Université de Franche-Comté, Besançon, France; Département de maladies infectieuses, CHU Dijon, France
| | - L S Aho-Glélé
- Service d'épidémiologie et hygiène hospitalières, CHU Dijon, France
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Khosravi AD, Hoveizavi H, Mohammadian A, Farahani A, Jenabi A. Genotyping of multidrug-resistant strains of Pseudomonas aeruginosa isolated from burn and wound infections by ERIC-PCR. Acta Cir Bras 2016; 31:206-11. [PMID: 27050792 DOI: 10.1590/s0102-865020160030000009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 02/16/2016] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To determine the genetic diversity of MDR P. aeruginosa strains isolated from burn and wound infections in Ahvaz, Iran, by ERIC-PCR. METHODS From total 99 strains of P. aeruginosa defined as MDR by using drug susceptibility testing, 66 were subjected to ERIC-PCR analysis, comprises 53 strains isolated from burn infection, and 13 randomly selected strains from wound infection with higher resistance to combinations of more numbers of drugs. RESULTS Eight clusters (I to VIII), and 50 single clones were generated for tested MDR isolates analyzed by ERIC-PCR. The high heterogeneity was observed among the isolates from burn infections including 16 isolates which were categorized in eight clusters and 37 single clones. The isolates in clusters II, III, VI, VIII showed 100% similarity. CONCLUSIONS The high level of genotypic heterogeneity in P. aeruginosa strains demonstrated no genetic correlation between them. Extremely high drug resistance in isolates from burn, suggests that efficient control measures and proper antibiotic policy should be observed.
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Affiliation(s)
- Azar Dokht Khosravi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hajar Hoveizavi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Mohammadian
- Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Abbas Farahani
- Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Atefeh Jenabi
- Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Clonality of Bacterial Pathogens Causing Hospital-Acquired Pneumonia. Curr Microbiol 2016; 73:312-316. [PMID: 27170306 DOI: 10.1007/s00284-016-1058-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/26/2016] [Indexed: 10/21/2022]
Abstract
Hospital-acquired pneumonia (HAP) is one of the most serious complications in patients staying in intensive care units. This multicenter study of Czech patients with HAP aimed at assessing the clonality of bacterial pathogens causing the condition. Bacterial isolates were compared using pulsed-field gel electrophoresis. Included in this study were 330 patients hospitalized between May 1, 2013 and December 31, 2014 at departments of anesthesiology and intensive care medicine of four big hospitals in the Czech Republic. A total of 531 bacterial isolates were obtained, of which 267 were classified as etiological agents causing HAP. Similarity or identity was assessed in 231 bacterial isolates most frequently obtained from HAP patients. Over the study period, no significant clonal spread was noted. Most isolates were unique strains, and the included HAP cases may therefore be characterized as mostly endogenous. Yet there were differences in species and potential identical isolates between the participating centers. In three hospitals, Gram-negative bacteria (Enterobacteriaceae and Pseudomonas aeruginosa) prevailed as etiological agents, and Staphylococcus aureus was most prevalent in the fourth center.
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15
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Akya A, Salimi A, Nomanpour B, Ahmadi K. Prevalence and Clonal Dissemination of Metallo-Beta-Lactamase-Producing Pseudomonas aeruginosa in Kermanshah. Jundishapur J Microbiol 2015; 8:e20980. [PMID: 26421137 PMCID: PMC4584137 DOI: 10.5812/jjm.20980v2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 08/16/2014] [Accepted: 08/28/2014] [Indexed: 11/27/2022] Open
Abstract
Background: Pseudomonas aeruginosa is an opportunistic pathogen associated with nosocomial infections. The emergence and dissemination of metallo-beta-lactamases (MBLs) has contributed to the high rate of resistance among P. aeruginosa isolates. Objectives: The purpose of this study was to describe the prevalence and the clonal dissemination of MBL- producing P. aeruginosa isolates collected from major hospitals in Kermanshah. Materials and Methods: Antibiotic susceptibility testing was performed using the minimal inhibitory concentrations. The MBLs were investigated using the Double-Disk Synergy Test (DDST) and Polymerase Chain Reaction. Molecular typing was performed by Pulsed-Field Gel Electrophoresis (PFGE). Results: Of the 60 P. aeruginosa isolates included in this study, 30 (50%) were resistant to Gentamicin, 38 (63.3%) to Piperacillin, 42 (70%) to Ceftazidime, and 45 (75%) to Cefepime. Twenty-nine (48.3%) isolates were MBL producers in the DDST test. Five (8.3%) isolates were positive for the VIM gene. PFGE analysis among the MBL producers revealed 12 distinct clonal patterns. Conclusions: The inter- and intra-hospital dissemination of resistant clones is a matter of concern and is an indicator of the level of the improvement and surveillance of standard hygiene, particularly disinfection and hand washing before and after contact with patients. Given the emergence of MBL-producing strains, surveillance has become an important procedure to control the transmission of resistant strains.
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Affiliation(s)
- Alisha Akya
- Nosocomial Infection Research Centre, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR Iran
- Corresponding author: Alisha Akya, Nosocomial Infection Research Centre, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR Iran. Tel: +98-83134274618, Fax: +98-83134262252, E-mail:
| | - Afsaneh Salimi
- Student Research Committee, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR Iran
| | - Bizhan Nomanpour
- School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR Iran
| | - Kamal Ahmadi
- Student Research Committee, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR Iran
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Kim HY, Phan-a-god S, Shin IS. Antibacterial activities of isothiocyanates extracted from horseradish (Armoracia rusticana) root against Antibiotic-resistant bacteria. Food Sci Biotechnol 2015. [DOI: 10.1007/s10068-015-0131-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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17
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Haenni M, Hocquet D, Ponsin C, Cholley P, Guyeux C, Madec JY, Bertrand X. Population structure and antimicrobial susceptibility of Pseudomonas aeruginosa from animal infections in France. BMC Vet Res 2015; 11:9. [PMID: 25604773 PMCID: PMC4307146 DOI: 10.1186/s12917-015-0324-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 01/12/2015] [Indexed: 12/03/2022] Open
Abstract
Background Pseudomonas aeruginosa is a major human pathogen, which also affects animals. It is thought that P. aeruginosa has a non-clonal epidemic population structure, with distinct isolates found in humans, animals or the environment. However, very little is known about the structure of the P. aeruginosa population from diseased animals. Data on antimicrobial resistance are also scarce. Results Thirty-four already registered and 19 new MLST profiles were identified. Interestingly, a few clones were more prevalent, and clones associated to human outbreaks were also detected. Multidrug resistance phenotypes were overall rare. Conclusion We highlight the non clonal structure of the population and show a higher prevalence of specific clones, possibly correlating with higher pathogenicity. The low proportion of antimicrobial resistance contrasts with the high resistance rate of human isolates. Electronic supplementary material The online version of this article (doi:10.1186/s12917-015-0324-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marisa Haenni
- Agence Nationale de Sécurité Sanitaire (Anses), Unité Antibiorésistance et Virulence Bactériennes, Lyon, France.
| | - Didier Hocquet
- Laboratoire d'Hygiène Hospitalière, UMR 6249 CNRS Chrono-environnement, Université de Franche-Comté, Centre Hospitalier Universitaire, Besançon, France.
| | - Cécile Ponsin
- Agence Nationale de Sécurité Sanitaire (Anses), Unité Antibiorésistance et Virulence Bactériennes, Lyon, France.
| | - Pascal Cholley
- Laboratoire d'Hygiène Hospitalière, UMR 6249 CNRS Chrono-environnement, Université de Franche-Comté, Centre Hospitalier Universitaire, Besançon, France.
| | - Christophe Guyeux
- Département DISC, Institut FEMTO-ST, UMR 6174 CNRS, Université de Franche-Comté, Belfort Cedex, France.
| | - Jean-Yves Madec
- Agence Nationale de Sécurité Sanitaire (Anses), Unité Antibiorésistance et Virulence Bactériennes, Lyon, France.
| | - Xavier Bertrand
- Laboratoire d'Hygiène Hospitalière, UMR 6249 CNRS Chrono-environnement, Université de Franche-Comté, Centre Hospitalier Universitaire, Besançon, France.
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Liu CP, Chen TL, Wang NY, Chow SF, Lin JC, Yan TR. Detection of Pseudomonas aeruginosa isolates carrying the bla OXA-142 extended-spectrum β-lactamase gene in Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2014; 50:68-74. [PMID: 25648667 DOI: 10.1016/j.jmii.2014.11.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 11/24/2014] [Accepted: 11/29/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND/PURPOSE The emergence of extended-spectrum β-lactamase (ESBL) OXA-142 gene (blaOXA-142) in Pseudomonas aeruginosa has been reported in Bulgaria and other European countries, but rarely in Asia. METHODS From January 2009 to December 2012, 90 P. aeruginosa isolates with reduced susceptibility or resistance to ceftazidime (minimum inhibitory concentration ≥ 8 mg/L) were screened for ESBL and other broad-spectrum β-lactamase genes by polymerase chain reaction and sequencing. Clonal relationship of the isolates was determined by pulsed-field gel electrophoresis. RESULTS Three isolates were positive for ESBL production, exhibited resistance to ceftazidime, and carried the blaOXA-142 gene. The blaOXA-142 gene was integrated into class 1 integron. Using Southern blot analysis, blaOXA-142-containing integron was found to be located on a plasmid in all three isolates. Eleven strains of P. aeruginosa carrying blaOXA-17 gene were found. The oprD mutation was found in all the 21 ESBL strains of P. aeruginosa. CONCLUSIONS This study confirmed the presence of blaOXA-142-positive P. aeruginosa isolates in Taiwan.
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Affiliation(s)
- Chang-Pan Liu
- Division of Infectious Diseases, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan; Section of Microbiology, Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medicine, Mackay Medical College, Taipei, Taiwan; Graduate Institute of Bioengineering, Tatung University, Taipei, Taiwan
| | - Te-Li Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Cheng-Hsin General Hospital, Taipei, Taiwan
| | - Nai-Yu Wang
- Section of Microbiology, Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Shan-Fan Chow
- Graduate Institute of Bioengineering, Tatung University, Taipei, Taiwan
| | - Jung-Chung Lin
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, Taipei, Taiwan; National Defense Medical Center, Taipei, Taiwan.
| | - Tsong-Rong Yan
- Graduate Institute of Bioengineering, Tatung University, Taipei, Taiwan.
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Labarca JA, Salles MJC, Seas C, Guzmán-Blanco M. Carbapenem resistance in Pseudomonas aeruginosa and Acinetobacter baumannii in the nosocomial setting in Latin America. Crit Rev Microbiol 2014; 42:276-92. [PMID: 25159043 DOI: 10.3109/1040841x.2014.940494] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Increasing prevalence of carbapenem-resistant Pseudomonas aeruginosa and Acinetobacter baumannii strains in the nosocomial setting in Latin America represents an emerging challenge to public health, as the range of therapeutic agents active against these pathogens becomes increasingly constrained. We review published reports from 2002 to 2013, compiling data from throughout the region on prevalence, mechanisms of resistance and molecular epidemiology of carbapenem-resistant strains of P. aeruginosa and A. baumannii. We find rates of carbapenem resistance up to 66% for P. aeruginosa and as high as 90% for A. baumannii isolates across the different countries of Latin America, with the resistance rate of A. baumannii isolates greater than 50% in many countries. An outbreak of the SPM-1 carbapenemase is a chief cause of resistance in P. aeruginosa strains in Brazil. Elsewhere in Latin America, members of the VIM family are the most important carbapenemases among P. aeruginosa strains. Carbapenem resistance in A. baumannii in Latin America is predominantly due to the oxacillinases OXA-23, OXA-58 and (in Brazil) OXA-143. Susceptibility of P. aeruginosa and A. baumannii to colistin remains high, however, development of resistance has already been detected in some countries. Better epidemiological data are needed to design effective infection control interventions.
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Affiliation(s)
- Jaime A Labarca
- a Department of Infectious Diseases , School of Medicine, Pontificia Universidad Católica de Chile , Lira , Santiago , Chile
| | | | - Carlos Seas
- c Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia , Lima , Perú , and
| | - Manuel Guzmán-Blanco
- d Hospital Privado Centro Médico de Caracas and Hospital Vargas de Caracas , Caracas , Venezuela
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Draft genome sequences of two Pseudomonas aeruginosa clinical isolates with different antibiotic susceptibilities. J Bacteriol 2011; 193:5573. [PMID: 21705591 DOI: 10.1128/jb.05446-11] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pseudomonas aeruginosa is a primary cause of opportunistic infections. We have sequenced and annotated the genomes of two P. aeruginosa clinical isolates evidencing different antibiotic susceptibilities. Registered differences in the composition of their accessory genomes may provide clues on P. aeruginosa strategies to thrive in different environments like infection loci.
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Strain-tailored double-disk synergy test detects extended-spectrum oxacillinases in Pseudomonas aeruginosa. J Clin Microbiol 2011; 49:2262-5. [PMID: 21450950 DOI: 10.1128/jcm.02585-10] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The prevalence of class D extended-spectrum oxacillinases (ES-OXAs) in ceftazidime-resistant strains of Pseudomonas aeruginosa is often underestimated by double-disk synergy tests (DDST) using clavulanate. A DDST with a customized distance between a disk of ceftazidime or cefepime and inhibitors (clavulanate and imipenem) detected 14 out of 15 different ES-OXAs.
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