1
|
Volling C, Mataseje L, Graña-Miraglia L, Hu X, Anceva-Sami S, Coleman BL, Downing M, Hota S, Jamal AJ, Johnstone J, Katz K, Leis JA, Li A, Mahesh V, Melano R, Muller M, Nayani S, Patel S, Paterson A, Pejkovska M, Ricciuto D, Sultana A, Vikulova T, Zhong Z, McGeer A, Guttman DS, Mulvey MR. Epidemiology of healthcare-associated Pseudomonas aeruginosa in intensive care units: are sink drains to blame? J Hosp Infect 2024; 148:77-86. [PMID: 38554807 DOI: 10.1016/j.jhin.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/23/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Pseudomonas aeruginosa (PA) is a common cause of healthcare-associated infection (PA-HAI) in the intensive care unit (ICU). AIM To describe the epidemiology of PA-HAI in ICUs in Ontario, Canada, and to identify episodes of sink-to-patient PA transmission. METHODS This was a prospective cohort study of patients in six ICUs from 2018 to 2019, with retrieval of PA clinical isolates, and PA-screening of antimicrobial-resistant organism surveillance rectal swabs, and of sink drain, air, and faucet samples. All PA isolates underwent whole-genome sequencing. PA-HAI was defined using US National Healthcare Safety Network criteria. ICU-acquired PA was defined as PA isolated from specimens obtained ≥48 h after ICU admission in those with prior negative rectal swabs. Sink-to-patient PA transmission was defined as ICU-acquired PA with close genomic relationship to isolate(s) previously recovered from sinks in a room/bedspace occupied 3-14 days prior to collection date of the relevant patient specimen. FINDINGS Over ten months, 72 PA-HAIs occurred among 60/4263 admissions. The rate of PA-HAI was 2.40 per 1000 patient-ICU-days; higher in patients who were PA-colonized on admission. PA-HAI was associated with longer stay (median: 26 vs 3 days uninfected; P < 0.001) and contributed to death in 22/60 cases (36.7%). Fifty-eight admissions with ICU-acquired PA were identified, contributing 35/72 (48.6%) PA-HAIs. Four patients with five PA-HAIs (6.9%) had closely related isolates previously recovered from their room/bedspace sinks. CONCLUSION Nearly half of PA causing HAI appeared to be acquired in ICUs, and 7% of PA-HAIs were associated with sink-to-patient transmission. Sinks may be an under-recognized reservoir for HAIs.
Collapse
Affiliation(s)
- C Volling
- Department of Microbiology, Sinai Health, Toronto, Canada.
| | - L Mataseje
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canada
| | - L Graña-Miraglia
- Department of Cell & Systems Biology, University of Toronto, Toronto, Canada
| | - X Hu
- Department of Cell & Systems Biology, University of Toronto, Toronto, Canada
| | - S Anceva-Sami
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - B L Coleman
- Department of Microbiology, Sinai Health, Toronto, Canada
| | | | - S Hota
- Department of Medicine, University Health Network, Toronto, Canada
| | - A J Jamal
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - J Johnstone
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - K Katz
- Department of Medicine, North York General Hospital, Toronto, Canada
| | - J A Leis
- Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - A Li
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - V Mahesh
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - R Melano
- Pan American Health Organization, Washington, USA
| | - M Muller
- Department of Medicine, Unity Health Toronto, Toronto, Canada
| | - S Nayani
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - S Patel
- Public Health Ontario Laboratory, Toronto, Canada
| | - A Paterson
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - M Pejkovska
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - D Ricciuto
- Department of Medicine, Lakeridge Health, Oshawa, Canada
| | - A Sultana
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - T Vikulova
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - Z Zhong
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - A McGeer
- Department of Microbiology, Sinai Health, Toronto, Canada
| | - D S Guttman
- Department of Cell & Systems Biology, University of Toronto, Toronto, Canada; Centre for the Analysis of Genome Evolution and Function, Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | - M R Mulvey
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canada
| |
Collapse
|
2
|
Kaszab E, Radó J, Kriszt B, Pászti J, Lesinszki V, Szabó A, Tóth G, Khaledi A, Szoboszlay S. Groundwater, soil and compost, as possible sources of virulent and antibiotic-resistant Pseudomonas aeruginosa. Int J Environ Health Res 2021; 31:848-860. [PMID: 31736330 DOI: 10.1080/09603123.2019.1691719] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Pseudomonas aeruginosa is a major public health concern all around the world. In the frame of this work, a set of diverse environmental P. aeruginosa isolates with various antibiotic resistance profiles were examined in a Galleria mellonella virulence model. Motility, serotypes, virulence factors and biofilm-forming ability were also examined. Molecular types were determined by pulsed-field gel electrophoresis (PFGE). Based on our results, the majority of environmental isolates were virulent in the G. mellonella test and twitching showed a positive correlation with mortality. Resistance against several antibiotic agents such as Imipenem correlated with a lower virulence in the applied G. mellonella model. PFGE revealed that five examined environmental isolates were closely related to clinically detected pulsed-field types. Our study demonstrated that industrial wastewater effluents, composts, and hydrocarbon-contaminated sites should be considered as hot spots of high-risk clones of P. aeruginosa.
Collapse
Affiliation(s)
- Edit Kaszab
- Department of Environmental Safety and Ecotoxicology, Szent István University, Gödöllő, Hungary
| | - Júlia Radó
- Department of Environmental Safety and Ecotoxicology, Szent István University, Gödöllő, Hungary
| | - Balázs Kriszt
- Department of Environmental Safety and Ecotoxicology, Szent István University, Gödöllő, Hungary
| | - Judit Pászti
- Department of Phage Typing and Molecular Epidemiology, National Center for Epidemiology, Budapest, Hungary
| | - Virág Lesinszki
- Department of Phage Typing and Molecular Epidemiology, National Center for Epidemiology, Budapest, Hungary
| | - Adám Szabó
- Centre for Experimental and Clinical Infection Research, Institute for Molecular Bacteriology TWINCORE, Hannover, Germany
| | - Gergő Tóth
- Department of Environmental Safety and Ecotoxicology, Szent István University, Gödöllő, Hungary
| | - Ariane Khaledi
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Sándor Szoboszlay
- Department of Environmental Safety and Ecotoxicology, Szent István University, Gödöllő, Hungary
| |
Collapse
|
3
|
Volling C, Ahangari N, Bartoszko JJ, Coleman BL, Garcia-Jeldes F, Jamal AJ, Johnstone J, Kandel C, Kohler P, Maltezou HC, Maze Dit Mieusement L, McKenzie N, Mertz D, Monod A, Saeed S, Shea B, Stuart RL, Thomas S, Uleryk E, McGeer A. Are Sink Drainage Systems a Reservoir for Hospital-Acquired Gammaproteobacteria Colonization and Infection? A Systematic Review. Open Forum Infect Dis 2020; 8:ofaa590. [PMID: 33553469 PMCID: PMC7856333 DOI: 10.1093/ofid/ofaa590] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/04/2020] [Indexed: 01/23/2023] Open
Abstract
Increasing rates of antimicrobial-resistant organisms have focused attention on sink drainage systems as reservoirs for hospital-acquired Gammaproteobacteria colonization and infection. We aimed to assess the quality of evidence for transmission from this reservoir. We searched 8 databases and identified 52 studies implicating sink drainage systems in acute care hospitals as a reservoir for Gammaproteobacterial colonization/infection. We used a causality tool to summarize the quality of evidence. Included studies provided evidence of co-occurrence of contaminated sink drainage systems and colonization/infection, temporal sequencing compatible with sink drainage reservoirs, some steps in potential causal pathways, and relatedness between bacteria from sink drainage systems and patients. Some studies provided convincing evidence of reduced risk of organism acquisition following interventions. No single study provided convincing evidence across all causality domains, and the attributable fraction of infections related to sink drainage systems remains unknown. These results may help to guide conduct and reporting in future studies.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Adam Monod
- Sinai Health System, Toronto, Ontario, Canada
| | | | | | | | - Sera Thomas
- Sinai Health System, Toronto, Ontario, Canada
| | | | | |
Collapse
|
4
|
Tuon FF, Cieslinski J, Rodrigues SDS, Serra FB, Paula MDND. Evaluation of in vitro activity of ceftolozane-tazobactam against recent clinical bacterial isolates from Brazil - the EM200 study. Braz J Infect Dis 2020; 24:96-103. [PMID: 32360070 PMCID: PMC9392040 DOI: 10.1016/j.bjid.2020.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 02/23/2020] [Accepted: 04/08/2020] [Indexed: 12/31/2022] Open
Abstract
Background The emergence of antibiotic resistance is increasing and there are few effective antibiotics to treat infections caused by resistant and multidrug resistant bacterial pathogens. This study aimed to evaluate the in vitro activity of ceftolozane–tazobactam against clinical bacterial isolates from Brazil. Methods A total of 673 Gram-negative bacterial isolates including Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa and other Enterobacterales collected from 2016 to 2017 were tested, most of them isolated from patients in intensive care units. Minimum inhibitory concentrations (MIC50/90) were determined by broth microdilution for amikacin, aztreonam, cefepime, cefotaxime, cefoxitin, ceftolozane–tazobactam, ceftazidime, ceftriaxone, ciprofloxacin, colistin, ertapenem, imipenem, levofloxacin, meropenem, and piperacillin-tazobactam using dried panels. Antimicrobial susceptibility results were interpreted according to Clinical and Laboratory Standards Institute criteria. Results Susceptibility rates to ceftolozane–tazobactam ranged from 40.4% to 94.9%. P. aeruginosa susceptibility rate to ceftolozane–tazobactam was 84.9% (MIC50/90, 1/16 μg/mL) and 99.2% to colistin. For E. coli, ceftolozane–tazobactam inhibited 94.9% (MIC50/90, 0.25/1 μg/mL) of the microorganisms. The susceptibility rate of K. pneumoniae to ceftolozane–tazobactam was 40.4% (MIC50/90, 16/>32 μg/mL). Other Enterobacterales have shown susceptibility rates of 81.1% (MIC50/90, 0.5/16 μg/mL) to ceftolozane–tazobactam, 93.9% to meropenem, 90.9% to amikacin (90.9%), and 88.6% to ertapenem. In non-carbapenemase producing isolates, AmpC mutations were found three isolates. Conclusions Ceftolozane–tazobactam has shown relevant activity against a large variety of the analyzed microorganisms collected from multiple centers in Brazil, showing promising results even in multidrug resistant strains.
Collapse
Affiliation(s)
- Felipe Francisco Tuon
- Pontifícia Universidade Católica do Paraná, Faculdade de Medicina, Laboratório de Doenças Infecciosas Emergentes, Curitiba, PR, Brazil.
| | - Juliette Cieslinski
- Pontifícia Universidade Católica do Paraná, Faculdade de Medicina, Laboratório de Doenças Infecciosas Emergentes, Curitiba, PR, Brazil
| | | | | | | |
Collapse
|
5
|
Khodayary R, Nikokar I, Mobayen MR, Afrasiabi F, Araghian A, Elmi A, Moradzadeh M. High incidence of type III secretion system associated virulence factors (exoenzymes) in Pseudomonas aeruginosa isolated from Iranian burn patients. BMC Res Notes 2019; 12:28. [PMID: 30646938 PMCID: PMC6334392 DOI: 10.1186/s13104-019-4071-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 01/11/2019] [Indexed: 01/09/2023] Open
Abstract
Objective The present study aimed to determine the prevalence of virulence factors and antimicrobial resistance profile of Pseudomonas aeruginosa strains isolated from Iranian burn patients. Results This cross-sectional study performed on 100 P. aeruginosa isolates which were recovered from burn wound specimens in 2014–2015. All presumptive isolates were identified by standard microbiologic tests. Antimicrobial susceptibility test was carried out by disk diffusion method. The presence of virulence genes was determined by PCR method. Antibiotic susceptibility results revealed that the isolates were mostly susceptible to amikacin (61%), ceftazidime (60%), and imipenem (55%). Moreover, 59% of the isolates were multi-drug resistance (MDR). The most prevalent MDR pattern was aminoglycosides–penicillins–fluoroquinolones–carbapenems (15%). The presence of exoT, exoY, exoS and exoU genes was detected in 100%, 100%, 59%, and 41% of the tested isolates, respectively. Results points out the pattern of MDR and genetic diversity of type III secretion system among P. aeruginosa strains isolated from the burn population. Overall, the association of MDR and the presence of the specific virulence genes can be a predictive marker for the persistence of these isolates in the hospitals and subsequently a worse clinical condition for the affected patients.
Collapse
Affiliation(s)
- Ramin Khodayary
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Iraj Nikokar
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran. .,Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran. .,Laboratory of Microbiology and Immunology of Infectious Diseases, Paramedicine Faculty, Guilan University of Medical Sciences, P.O. Box: 44715-1361, Langeroud, IR, Iran.
| | | | - Farhad Afrasiabi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Afshin Araghian
- Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Elmi
- Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Meisam Moradzadeh
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| |
Collapse
|
6
|
Karami P, Mohajeri P, Yousefi Mashouf R, Karami M, Yaghoobi MH, Dastan D, Alikhani MY. Molecular characterization of clinical and environmental Pseudomonas aeruginosa isolated in a burn center. Saudi J Biol Sci 2018; 26:1731-1736. [PMID: 31762651 PMCID: PMC6864211 DOI: 10.1016/j.sjbs.2018.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/30/2018] [Accepted: 07/19/2018] [Indexed: 01/09/2023] Open
Abstract
In burn centers, Pseudomonas aeruginosa acts as a major cause of nosocomial infections. Therefore, this study aimed to characterize molecularly P. aeruginosa isolates collected from environmental samples and burn patients. A total of 78 strains (including 58 clinical and 20 environmental isolates) of the P. aeruginosa were collected from Beasat hospital of Hamadan, west of Iran, and was identified using API 20NE. The disk diffusion method according to the CLSI was applied for determination of the antimicrobial resistance. Moreover, the microtiter plate test was used for the quantification of Biofilm formation. The genomic features of the isolated strains was evaluated using Pulsed Field Gel Electrophoresis (PFGE). We found that 94.8% of clinical and 80% environmental isolates were capable of forming biofilm. The rate of MDR in clinical and environmental isolates was 51.7% and 40%, respectively. A significant relationship was observed between biofilm formation capability and multiple drug resistance (p < 0.05). PFGE typing showed 11 different clusters with two major clusters A with 30 (38.5%) and B with 14 (17.9%) members, containing up to 56.4% of all isolates. There was no relationship between biofilm formation ability and antibiotic resistance patterns with PFGE patterns. According to the results, the clonal spread of environmental P. aeruginosa isolates is associated with clinical isolates, and both environmental and clinical isolates are attributed to a high prevalence of the antibiotic resistance and biofilm formation ability. This study highlighted that the prevention programs should be implemented in the hospital environment to control the spread of P. aeruginosa in burn units.
Collapse
Affiliation(s)
- Pezhman Karami
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Parviz Mohajeri
- Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Rasool Yousefi Mashouf
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Manoochehr Karami
- Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mojtaba Hedayat Yaghoobi
- Department of Infectious Disease, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Dara Dastan
- Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.,Brucellosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| |
Collapse
|
7
|
Vaez H, Safaei HG, Faghri J. The emergence of multidrug-resistant clone ST664 Pseudomonas aeruginosa in a referral burn hospital, Isfahan, Iran. Burns Trauma 2017; 5:27. [PMID: 29046876 PMCID: PMC5634946 DOI: 10.1186/s41038-017-0092-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 07/11/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Hamid Vaez
- Department of Microbiology, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Hajieh Ghasemian Safaei
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jamshid Faghri
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
8
|
Ghanbarzadeh Corehtash Z, Khorshidi A, Firoozeh F, Akbari H, Mahmoudi Aznaveh A. Biofilm Formation and Virulence Factors Among Pseudomonas aeruginosa Isolated From Burn Patients. Jundishapur J Microbiol 2015; 8:e22345. [PMID: 26587205 PMCID: PMC4644346 DOI: 10.5812/jjm.22345] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 11/20/2014] [Accepted: 12/19/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Pseudomonas aeruginosa possesses a variety of virulence factors and infections caused by multidrug-resistant P. aeruginosa (MDRPA) in burn patients are a public health problem. OBJECTIVES The aim of this study was to determine the antibiotic resistance pattern, the biofilm formation, the prevalence of MDRPA and two virulence genes (nan1 and exoA) among P. aeruginosa isolated from burn patients. PATIENTS AND METHODS A total of 144 isolates of P. aeruginosa were collected from burn patient at the Burn Centre of Tehran, Iran, between March 2013 and July 2013. Antibiotic susceptibility test was performed via agar disk diffusion method. The ability of producing biofilm was examined by crystal violet microtiter plate assay and the prevalence of the exoA and nan1 genes among the isolates was determined by polymerase chain reaction (PCR). RESULTS A high rate of resistance was seen against ciprofloxacin (93.7%), aztreonam (86.8%), piperacillin (85.4%), ceftazidime (82.6%), amikacin (82%) and imipenem (79.2%). In total, 93.1% of the isolates were characterized as MDRPA. Biofilm formation was seen in 92.4% of the isolates. The prevalence of the exoA and nan1 genes were 75% and 11.8% among the isolates, respectively. CONCLUSIONS The high rate of MDRPA and its ability to produce biofilm is an alarm for public health. The statistical analysis showed that biofilm production in the MDRPA isolates was significantly higher than that in the non-MDRPA isolates (P < 0.001).
Collapse
Affiliation(s)
- Zahra Ghanbarzadeh Corehtash
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, IR Iran
| | - Ahmad Khorshidi
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, IR Iran
- Corresponding author: Ahmad Khorshidi, Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, IR Iran. Tel: +98-9133624687, Fax: +98-3615551112, E-mail:
| | - Farzaneh Firoozeh
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, IR Iran
| | - Hosein Akbari
- Biostatistics Department, Truma Research center, Kashan University of Medical Sciences, Kashan, IR Iran
| | - Azam Mahmoudi Aznaveh
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran
| |
Collapse
|
9
|
Pakbaten Toupkanlou S, Najar Peerayeh S, Pirhajati Mahabadi R. Class A and D Extended-Spectrum β-Lactamases in Imipenem Resistant Pseudomonas aeruginosa Isolated From Burn Patients in Iran. Jundishapur J Microbiol 2015; 8:e18352. [PMID: 26468357 PMCID: PMC4600860 DOI: 10.5812/jjm.18352v2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 08/03/2014] [Accepted: 09/20/2014] [Indexed: 11/29/2022] Open
Abstract
Background: Pseudomonas aeruginosa remains a leading cause of severe wound infection and mortality in burn patients. Objectives: The current study aimed to determine the prevalence of Ambler class A and D β-lactamases among P. aeruginosa isolated from infected burn injuries in Tehran, Iran. Patients and Methods: Bacteriological samples were taken from burn patients with clinical symptoms of burn infection. Fifty Gram-negative, oxidase-positive, catalase- positive bacilli, grown at 42ºC and production of pigment on Mueller-Hinton agar were identified as P. aeruginosa. All of the 50 isolates were examined for antibiotic susceptibility via disk diffusion method, and production of Ambler class A and and D β-lactamases by phenotypic screening test. The presence of Ambler class A and D β-lactamases was confirmed by polymerase chain reaction technique. Results: The results showed that the majority of isolates (88%) were multi-drug resistant. Out of these 50 imipenem resistant isolates, 7 (14%), 18 (36%), 18 (36%) and 18 (36%) strains were positive for blaPER, blaOXA-10, blaTEM and blaSHV genes alone or in combination, respectively. None of the isolates possessed blaKPC or blaGES genes. Conclusions: The current study highlights that the high level of resistance to many antibacterial agents and a gradual increase in the degree of PER, OXA-10, SHV and TEM ESBLs among the majority of imipenem resistant P. aeruginosa isolated from patients with burn infection is an enormous threat in burn centers in Iran.
Collapse
Affiliation(s)
- Sanaz Pakbaten Toupkanlou
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran
| | - Shahin Najar Peerayeh
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran
- Corresponding author: Shahin Najar Peerayeh, Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran, Tel.: +98-2182884555, Fax: +98-2182884555, E-mail:
| | - Rahim Pirhajati Mahabadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran
| |
Collapse
|
10
|
Farjah A, Owlia P, Siadat SD, Mousavi SF, Ardestani MS, Mohammadpour HK. Immunological evaluation of an alginate-based conjugate as a vaccine candidate againstPseudomonas aeruginosa. APMIS 2014; 123:175-83. [DOI: 10.1111/apm.12337] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 09/30/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Ali Farjah
- Department of Biology; Shahed University; Tehran Iran
- Department of Microbiology; Microbial research center; Pasteur Institute of Iran; Tehran Iran
| | - Parviz Owlia
- Molecular Microbiology Research Center; Shahed University; Tehran Iran
| | - Seyed Davar Siadat
- Department of Microbiology; Microbial research center; Pasteur Institute of Iran; Tehran Iran
| | - Seyed Fazlollah Mousavi
- Department of Microbiology; Microbial research center; Pasteur Institute of Iran; Tehran Iran
| | - Mehdi Shafiee Ardestani
- Department of Radiopharmacy; Faculty of pharmacy; Tehran University of Medical Science; Tehran Iran
| | | |
Collapse
|
11
|
Japoni A, Anvarinejad M, Farshad S, Giammanco GM, Rafaatpour N, Alipour E. Antibiotic Susceptibility Patterns and Molecular Epidemiology of Metallo-β-Lactamase Producing Pseudomonas Aeruginosa Strains Isolated From Burn Patients. Iran Red Crescent Med J 2014; 16:e10916. [PMID: 25031843 PMCID: PMC4082503 DOI: 10.5812/ircmj.10916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 10/09/2013] [Accepted: 01/08/2014] [Indexed: 12/17/2022]
Abstract
Background: Failure in the treatment of burn patients infected with Pseudomonas aeruginosa could happen as a result of the acquisition of antibiotic resistance, including carbapenems. Objectives: The aim of the present study was to investigate the phenotypic and genotypic characteristics of the Pseudomonas aeruginosa strains, isolated from burn patients. Patients and Methods: During a 12 month period, in this cross-sectional study, two hundred seventy strains of Pseudomonas aeruginosa were isolated from the burn patients in Ghotbeddin Burn Hospital, Shiraz, Iran. Screening for the carbapenem resistance in the isolates was carried out by the E test method. Sensitivity patterns of metallo-β-lactamase (MβLs) producing strains of pseudomonas to eleven antibiotics were determined by the mentioned method. The epidemiological associations of these strains were determined by Pulsed-field gel electrophoresis (PFGE). Results: Of the 270 strains, 60 (22.2%) were resistant to imipenem and meropenem, classified as MβLs producing. MβLs producing strains of pseudomonas were completely resistant to five tested antibiotics while their sensitivities to the three most effective antibiotics including ceftazidime, amikacin and ciprofloxacin were 23.4%, 6.7 % and 1.7%, respectively. In PFGE, 37 patterns from the genome of Pseudomonas aeruginosa were observed. Majority of the strains (43; 71.6%) exhibited more than 80% similarity, based on the drawn dendrogram. Conclusions: According to the results, none of the tested antibiotics is safe to prescribe. As PFGE revealed, a limited number of Pseudomonas aeruginosa types are predominant in the hospitals which infect the burn patients.
Collapse
Affiliation(s)
- Aziz Japoni
- Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Mojtaba Anvarinejad
- Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
- Corresponding Author: Mojtaba Anvarinejad, Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran. Tel: +98-7116474264, Fax: +98-7116474303, E-mail:
| | - Shohreh Farshad
- Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | | | - Noroddin Rafaatpour
- Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Ebrahim Alipour
- Alborzi Clinical Microbiology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| |
Collapse
|
12
|
Moazami-goudarzi S, Eftekhar F. Assessment of Carbapenem Susceptibility and Multidrug-Resistance in Pseudomonas aeruginosa Burn Isolates in Tehran. Jundishapur J Microbiol 2013; 6. [DOI: 10.5812/jjm.5036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|