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Taha R, Kader O, Shawky S, Rezk S. Ceftazidime-Avibactam plus aztreonam synergistic combination tested against carbapenem-resistant Enterobacterales characterized phenotypically and genotypically: a glimmer of hope. Ann Clin Microbiol Antimicrob 2023; 22:21. [PMID: 36945002 PMCID: PMC10029209 DOI: 10.1186/s12941-023-00573-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/12/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Carbapenemase-producing Enterobacterales (CPE) show rapid global dissemination and pose a significant therapeutic challenge. This study aimed to characterize carbapenemase-producing Klebsiella spp. and Escherichia coli (E. coli) phenotypically and genotypically and evaluate the effect of ceftazidime/ avibactam plus aztreonam combination. METHODS A total of 219 Klebsiella species and 390 E. coli strains were isolated from clinical samples, in which 80 Klebsiella spp. and 20 E coli isolates were resistant to tested carbapenems (imipenem, ertapenem, meropenem) by disk diffusion/broth dilution method and Vitek-2 compact system. MASTDISCS Combi Carba plus discs and real time PCR were used to determine type of carbapenemase phenotypically and genotypically, respectively. Interestingly, the synergistic effect between ceftazidime-avibactam (E-test) and aztreonam (disc) was tested against the CPE isolates. RESULTS Out of the carbapenem-resistant isolates, 76.25% Klebsiella spp. isolates were extensively drug-resistant (XDR) while 18.75% were pan drug-resistant (PDR), and 5% were multidrug-resistant (MDR). Regarding E. coli, 5% were PDR, 20% were MDR and 75% were XDR. More than one carbapenemase gene was detected in 99% of the isolates. In comparison between MAST-Carba plus discs and PCR results, sensitivity and specificity were (85.42-97.92%) in Klebsiella spp., and (69.64-100%) in E. coli, respectively. Moreover, a strong association was detected between both test results among Klebsiella spp. (p < 0.001) and E. coli (p = 0.012) isolates. Finally, ceftazidime-avibactam and aztreonam combination showed a synergistic effect in 98.8% of Klebsiella spp. and 95% of E coli. All 16 PDR isolates showed synergy. CONCLUSION This synergistic effect spots the light on new therapeutics for XDR and PDR CPE.
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Affiliation(s)
- Rawan Taha
- Lecturer of Molecular and Diagnostic Microbiology, Microbiology Department, Medical Research Institute, Alexandria University, 165 Horreya Avenue, Hadara, Alexandria, Egypt
- Microbiology Department, Medical Research Institute, Alexandria, Egypt
| | - Ola Kader
- Microbiology Department, Medical Research Institute, Alexandria, Egypt
| | - Sherine Shawky
- Microbiology Department, Medical Research Institute, Alexandria, Egypt
| | - Shahinda Rezk
- Lecturer of Molecular and Diagnostic Microbiology, Microbiology Department, Medical Research Institute, Alexandria University, 165 Horreya Avenue, Hadara, Alexandria, Egypt.
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Liaqat Z, Khan I, Azam S, Anwar Y, Althubaiti EH, Maroof L. Isolation and molecular characterization of extended spectrum beta lactamase producing Escherichia coli from chicken meat in Pakistan. PLoS One 2022; 17:e0269194. [PMID: 35657920 PMCID: PMC9165818 DOI: 10.1371/journal.pone.0269194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/16/2022] [Indexed: 12/03/2022] Open
Abstract
The goal of this study was to find E. coli, a prevalent pathogen that causes food-borne illnesses, in chicken samples (n = 500) collected from three districts in KhyberPukhtunkhwa: Mardan, Swabi, and Swat. The E. coli isolates were identified by Gram staining, API strips and Universal Stress Protein. A total of 412 samples tested positive for E. coli and were sensitive to MEM, TZP, and FOS as evidenced by disc diffusion method. The isolates were resistant to TE, NOR, and NA with statistically significant results (P≤0.05). The isolates showed the presence of different antibiotic resistance genes; blaOXA-1, blaCTX-M15, blaTEM-1, QnrS, TetA, AAC, AAD, Sul1 and Sul2. The results revealed mutations in blaOXA-1 gene (H81Q), blaTEM-1 (C108Y, T214A, K284E and P301S), QnrS (H95R) and Sul2 (E66A). The findings of this study may be helpful in better management of E. coli infections by physicians.
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Affiliation(s)
- Zainab Liaqat
- Centre of Biotechnology and Microbiology, University of Peshawar, Peshawar, Pakistan
| | - Ibrar Khan
- Centre of Biotechnology and Microbiology, University of Peshawar, Peshawar, Pakistan
- * E-mail:
| | - Sadiq Azam
- Centre of Biotechnology and Microbiology, University of Peshawar, Peshawar, Pakistan
| | - Yasir Anwar
- Department of Biological Sciences, Faculty of Science, King Abdul Aziz University, Jeddah, Saudi Arabia
| | | | - Lalina Maroof
- City University of Science and Information Technology, Peshawar, Pakistan
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3
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Zainab L, Ibrar K, Sadiq A, Hamid A, Ullah M, Noor R. Extended Spectrum Beta Lactamases-Producing Escherichia coli in Retail Chicken Meat from Khyber Pakhtunkhwa, Pakistan. Saudi J Biol Sci 2022; 29:103280. [PMID: 35521357 PMCID: PMC9065911 DOI: 10.1016/j.sjbs.2022.103280] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/16/2022] [Accepted: 04/08/2022] [Indexed: 11/30/2022] Open
Abstract
In human diet, poultry meat is an important component due to the presence of vitamins, proteins and minerals. But poultry meat can be contaminated by pathogenic bacteria which are responsible for food borne infections. The current study was therefore aimed at identification of Escherichia coli, a common pathogen causing food borne infections, in chicken samples (n = 400) collected from three districts of KhyberPukhtunkhwa; Peshawar, Kohat and Nowshera. The isolates were identified by Gram staining, API strips and through PCR (Universal Stress Protein). A total of 174 samples were positive for E. coli among the collected chicken samples. The isolates were resistant to TE, NOR and NA while were sensitive to MEM, TZP and FOS. The results were statistically significant having value P ≤ 0.05 in ANOVA. The isolates showed different antibiotic resistance genes; OXA-1, CTX-M15, blaTEM, QnrS, TetA, AAC, AAD, sul1 and sul2 which is the molecular explanations of their antibiotic resistance pattern. The PCR products were sequenced by Next Generation Sequencing (NGS) and the results revealed mutations in AAC gene (M120T and R197T) and CTX-M15 (A85V, N122D, A148S and G247D). To prevent and treat pathogenic diseases, the use of antimicrobial agents in animal husbandry are of utmost concern. The over-use and misuse of antimicrobial agents has made pathogenic E. coli multi drugs resistant making it a causative agent for many diseases in human beings. The results of the current study may be helpful for the physicians the better management of the diseases caused by E. coli.
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Affiliation(s)
- L. Zainab
- Centre of Biotechnology and Microbiology, University of Peshawar, Pakistan
| | - K. Ibrar
- Centre of Biotechnology and Microbiology, University of Peshawar, Pakistan
- Corresponding author.
| | - A. Sadiq
- Centre of Biotechnology and Microbiology, University of Peshawar, Pakistan
| | - A.K. Hamid
- Institute of Biological Sciences Sarhad University of Science and Information Technology, Peshawar, Pakistan
| | - Midrar Ullah
- Department of Biotechnology Shaheed Benazir Bhutto University Sheringal, Dir Upper Khyber Pakhtunkhwa, Pakistan
| | - R. Noor
- Department of Pathology, Khyber Teaching Hospital, Peshawar, Pakistan
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4
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Lee AJ, Suh HS. Comparative Evaluation of the Modified Carbapenem Inactivation Method for Phenotypic Detection of Guiana Extended-Spectrum β-Lactamase-Type Carbapenemases in Enterobacterales. Lab Med 2021; 52:578-583. [PMID: 33928355 DOI: 10.1093/labmed/lmab026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE We comparatively evaluated the performance of 3 phenotypic tests for the detection of carbapenemase production. MATERIALS AND METHODS Carbapenemase production was evaluated using the modified Hodge test (MHT), the modified carbapenemase inhibition method (mCIM), and the Rapidec Carba NP test (RCNP). RESULTS Among the 170 isolates, 79 were CP-CRE and 91 were non-CP-CRE. The CP-CRE isolates produced GES-5 (n = 66), KPC (n = 4), NDM (n = 7), NDM and OXA-48 (n = 1), and VIM (n = 1). For KPC producers, all 3 methods showed a sensitivity of 75%. The sensitivities of MHT, mCIM, and RCNP were 14.3%, 100%, and 71.4%, respectively, for NDM producers, and 1.5%, 12.1%, and 18.2% for GES-5 producers, respectively. CONCLUSION The performance of the phenotypic tests varied depending on the type of carbapenemase. For intensive infection control, phenotypic and molecular tests are required for the detection of common and rare types of carbapenemases.
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Affiliation(s)
- A-Jin Lee
- Department of Laboratory Medicine, Daegu Catholic University School of Medicine, Daegu, South Korea
| | - Hun Suk Suh
- Department of Laboratory Medicine, Daegu Catholic University School of Medicine, Daegu, South Korea
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5
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Bonnin RA, Jousset AB, Emeraud C, Oueslati S, Dortet L, Naas T. Genetic Diversity, Biochemical Properties, and Detection Methods of Minor Carbapenemases in Enterobacterales. Front Med (Lausanne) 2021; 7:616490. [PMID: 33553210 PMCID: PMC7855592 DOI: 10.3389/fmed.2020.616490] [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] [Received: 10/12/2020] [Accepted: 12/09/2020] [Indexed: 01/05/2023] Open
Abstract
Gram-negative bacteria, especially Enterobacterales, have emerged as major players in antimicrobial resistance worldwide. Resistance may affect all major classes of anti-gram-negative agents, becoming multidrug resistant or even pan-drug resistant. Currently, β-lactamase-mediated resistance does not spare even the most powerful β-lactams (carbapenems), whose activity is challenged by carbapenemases. The dissemination of carbapenemases-encoding genes among Enterobacterales is a matter of concern, given the importance of carbapenems to treat nosocomial infections. Based on their amino acid sequences, carbapenemases are grouped into three major classes. Classes A and D use an active-site serine to catalyze hydrolysis, while class B (MBLs) require one or two zinc ions for their activity. The most important and clinically relevant carbapenemases are KPC, IMP/VIM/NDM, and OXA-48. However, several carbapenemases belonging to the different classes are less frequently detected. They correspond to class A (SME-, Nmc-A/IMI-, SFC-, GES-, BIC-like…), to class B (GIM, TMB, LMB…), class C (CMY-10 and ACT-28), and to class D (OXA-372). This review will address the genetic diversity, biochemical properties, and detection methods of minor acquired carbapenemases in Enterobacterales.
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Affiliation(s)
- Rémy A Bonnin
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Associated French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacteriaceae, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France
| | - Agnès B Jousset
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Associated French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacteriaceae, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France.,Bacteriology-Hygiene Unit, Assistance Publique-Hôpitaux de Paris, AP-HP Paris Saclay, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Cécile Emeraud
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Associated French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacteriaceae, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France.,Bacteriology-Hygiene Unit, Assistance Publique-Hôpitaux de Paris, AP-HP Paris Saclay, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Saoussen Oueslati
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France
| | - Laurent Dortet
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Associated French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacteriaceae, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France.,Bacteriology-Hygiene Unit, Assistance Publique-Hôpitaux de Paris, AP-HP Paris Saclay, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Thierry Naas
- Team "Resist" UMR1184 "Immunology of Viral, Auto-Immune, Hematological and Bacterial diseases (IMVA-HB)," INSERM, Université Paris-Saclay, CEA, LabEx LERMIT, Faculty of Medicine, Le Kremlin-Bicêtre, France.,Associated French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacteriaceae, Le Kremlin-Bicêtre, France.,Evolution and Ecology of Resistance to Antibiotics Unit, Institut Pasteur-APHP-Université Paris-Sud, Paris, France.,Bacteriology-Hygiene Unit, Assistance Publique-Hôpitaux de Paris, AP-HP Paris Saclay, Bicêtre Hospital, Le Kremlin-Bicêtre, France
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6
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Accuracy and applicability of different phenotypic methods for carbapenemase detection in Enterobacteriaceae: A systematic review and meta-analysis. J Glob Antimicrob Resist 2020; 21:138-147. [DOI: 10.1016/j.jgar.2019.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/09/2019] [Accepted: 10/10/2019] [Indexed: 11/23/2022] Open
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7
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Performance of rapid tests for carbapenemase detection among Brazilian Enterobacteriaceae isolates. Braz J Microbiol 2018; 49:914-918. [PMID: 30145262 PMCID: PMC6175730 DOI: 10.1016/j.bjm.2018.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/07/2018] [Accepted: 07/07/2018] [Indexed: 01/04/2023] Open
Abstract
The global emergence of carbapenemases led to the need of developing new methods for their rapid detection. The aim of this study was to evaluate the performance of the rapid tests for carbapenemase-producing and non-producing Enterobacteriaceae. Carbapenem non-susceptible Enterobacteriaceae from a surveillance study submitted to a multiplex real time PCR for carbapenemase detection were included in this study. The isolates were subjected to the rapid phenotypic tests Carba NP, Blue-Carba and Carbapenem Inactivation Method (CIM). A total of 83 carbapenemase-producing (43) and non-producing (40) isolates were included in the study. The sensitivity/specificity were 62.7%/97.5%, 95.3%/100%, and 74.4%/97.5% for Carba NP, Blue-Carba and CIM, respectively. Both Carba NP and Blue-Carba presented their final results after 75 min of incubation; the final results for CIM were obtained only after 8 h. Failure to detect OXA-370 carbapenemase was the main problem for Carba NP and CIM assays. As the Blue-Carba presented the highest sensitivity, it can be considered the best screening test. Conversely, CIM might be the easiest to perform, as it does not require special reagents. The early detection of carbapenemases aids to establish infection control measures and prevent carbapenemases to spread reducing the risk of healthcare associated infections and therapeutic failure.
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Bir R, Mohapatra S, Kumar A, Tyagi S, Sood S, Das BK, Kapil A. Comparative evaluation of in-house Carba NP test with other phenotypic tests for rapid detection of carbapenem-resistant Enterobacteriaceae. J Clin Lab Anal 2018; 33:e22652. [PMID: 30129058 DOI: 10.1002/jcla.22652] [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: 05/08/2018] [Accepted: 07/28/2018] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The prevalence of carbapenem-resistant Enterobacteriaceae (CRE) is alarming worldwide causing serious infections. Rapid and accurate identification of CRE is crucial to reduce the mortality and morbidity. In this study, we tried to develop an in-house Carba NP test for detection of CRE and evaluate its performance with others. METHODS A prospective study was conducted with 40 nonrepeating Enterobacteriaceae isolates over a period of 3 months. All the isolates were screened for carbapenem resistance as per CLSI 2016 guidelines followed by PCR for blaNDM-1, blaOXA-48, blaKPC, blaVIM, and blaIMP genes. All the isolates were subjected to five phenotypic tests, that is, in-house Carba NP (iCarba NP), commercial Carba NP (cCarba NP), Blue-Carba, modified Hodge test (MHT), and CHROMagar. RESULTS Among the 40 isolates, 87.5% were identified as Escherichia coli, 7.5% were Klebsiella pneumoniae, 2.5% were Enterobacter cloacae, and 2.5% were Citrobacter freundii. Thirty-three of 40 (82.5%) isolates were found to harbor one or more resistant genes. Considering PCR to be the gold standard test, sensitivity of the phenotypic methods for CRE detection ranged from 63.6% (MHT) to 96.9% (CHROMagar). Both cCarba NP and iCarba NP observed to have highest specificity. The performance of iCarba NP was found comparable with cCarba NP by kappa score 1 and found approximately 10 times less expensive than cCarba NP. CONCLUSION CHROMagar was observed most sensitive assay for detection of CRE followed by both Carba NP tests. iCarba NP was proved cheaper and equally good as cCarba NP for detection of CRE.
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Affiliation(s)
- Raunak Bir
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sarita Mohapatra
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Amarjeet Kumar
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sonu Tyagi
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Seema Sood
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Bimal Ku Das
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Arti Kapil
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
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Gautier G, Guillard T, Podac B, Bercot B, Vernet-Garnier V, de Champs C. Detection of different classes of carbapenemases: Adaptation and assessment of a phenotypic method applied to Enterobacteriaceae, Pseudomonas aeruginosa and Acinetobacter baumannii, and proposal of a new algorithm. J Microbiol Methods 2018; 147:26-35. [PMID: 29486226 DOI: 10.1016/j.mimet.2018.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 10/18/2022]
Abstract
A new phenotypic method for detecting carbapenemases has been adapted (assembling of two MAST® kits, including one that contains faropenem to which a temocillin disk has been added) then assessed using 101 bacterial strains (Enterobacteriaceae with assays on Pseudomonas aeruginosa and Acinetobacter baumannii) including 62 which produce genetically identified carbapenemases. Concerning Carbapenemase-Producing Enterobacteriaceae (CPE), there is 100% sensitivity for Klebsiella pneumoniae carbapenemase (KPC, Ambler class A) and OXA-48 (Ambler class D), and 91% for metallo-beta-lactamase (MBL, Ambler class B), with a 97% sensitivity for all carbapenemases, with a specificity of 100%. The test is also efficient for detecting Pseudomonas aeruginosa carbapenemases (sensitivity between 82 and 100% and 100% specificity). The major innovation is the combined use of faropenem and temocillin for reliable detection (excellent performance with 100% sensitivity and specificity) of OXA-48. This study has led to the development of a new algorithm to detect the different classes of carbapenemases, for first-line diagnosis, by combining this modified MAST® test with immunochromatographic methods and molecular biology techniques.
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Affiliation(s)
- Guillaume Gautier
- Bacteriology-Virology-Hygiene Department, Bacteriology Unit, Robert Debré University Hospital, avenue du général Koenig, 51092 Reims Cedex, France; Medical Biology Laboratory, Microbiology Department, Bacteriology Unit, William Morey General Hospital, 4 rue capitaine Drillien, 71321 Chalon-sur-Saône Cedex, France.
| | - Thomas Guillard
- Bacteriology-Virology-Hygiene Department, Bacteriology Unit, Robert Debré University Hospital, avenue du général Koenig, 51092 Reims Cedex, France; Research Unit EA 4687 SFR Cap-Santé (FED 4231), Acquired Resistance in Enterobacteriaceae, Reims Champagne-Ardenne University, 51 rue Cognacq-Jay, 51095 Reims Cedex, France.
| | - Bianca Podac
- Medical Biology Laboratory, Microbiology Department, Bacteriology Unit, William Morey General Hospital, 4 rue capitaine Drillien, 71321 Chalon-sur-Saône Cedex, France.
| | - Béatrice Bercot
- AP-HP, Saint-Louis-Lariboisière-Fernand-Widal Hospital Group, Laboratory of Bacteriology, associated for the National Reference Center for gonococci, 1 avenue Claude Vellefaux, 75010 Paris, France; IAME, UMR 1137, INSERM, Paris Diderot University, 16 rue Henri Huchard, 75890 Paris Cedex 18, France.
| | - Véronique Vernet-Garnier
- Bacteriology-Virology-Hygiene Department, Bacteriology Unit, Robert Debré University Hospital, avenue du général Koenig, 51092 Reims Cedex, France; Research Unit EA 4687 SFR Cap-Santé (FED 4231), Acquired Resistance in Enterobacteriaceae, Reims Champagne-Ardenne University, 51 rue Cognacq-Jay, 51095 Reims Cedex, France.
| | - Christophe de Champs
- Bacteriology-Virology-Hygiene Department, Bacteriology Unit, Robert Debré University Hospital, avenue du général Koenig, 51092 Reims Cedex, France; Research Unit EA 4687 SFR Cap-Santé (FED 4231), Acquired Resistance in Enterobacteriaceae, Reims Champagne-Ardenne University, 51 rue Cognacq-Jay, 51095 Reims Cedex, France.
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Dadashi M, Fallah F, Hashemi A, Hajikhani B, Owlia P, Bostanghadiri N, Farahani N, Mirpour M. Prevalence of bla NDM−1 -producing Klebsiella pneumoniae in Asia: A systematic review and meta-analysis. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.antinf.2017.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Sakanashi D, Kawachi M, Uozumi Y, Nishio M, Hara Y, Suematsu H, Hagihara M, Nishiyama N, Asai N, Koizumi Y, Yamagishi Y, Mikamo H. Evaluation of commercial phenotypic assays for the detection of IMP- or New Delhi metallo-β-lactamase-producing Enterobacteriaceae isolates in Japan. J Infect Chemother 2017; 23:474-480. [PMID: 28456489 DOI: 10.1016/j.jiac.2017.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/03/2017] [Accepted: 04/08/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVES This study was designed to evaluate the sodium mercaptoacetic acid double disk synergy test (SMA-DDST), the Etest metallo-β-lactamase (MBL) MP/MPI (Etest MP/MPI), and the Mastdiscs ID Carbapenemase Detection Disc Set (MAST-CDS) for the detection of MBL-producing Enterobacteriaceae isolates in Japan. METHODS Fifty-one clinical isolates and four reference strains were tested. These isolates included 40, 4, and 11 IMP-, New Delhi MBL (NDM)-, and non-MBL-producers, respectively. SMA-DDST was performed with meropenem (MEPM)-containing disks. RESULTS Sensitivities were 38/44 (86%), 40/44 (91%), and 15/44 (34%), and the cost ratio was 1:9.4:3.8 for MEPM-SMA-DDST:Etest MP/MPI:MAST-CDS, respectively. The specificity was 11/11 (100%) for all assays. MEPM-SMA-DDST detected IMP-producing isolates with high sensitivity (38/40; 95%), but the assay was inadequate for NDM-producing isolates (0/4; 0%). The Etest MP/MPI detected both IMP- (36/40; 90%) and NDM-producing isolates (4/4; 100%), but was the most expensive. MAST-CDS detected IMP-producing isolates with low sensitivity (11/40; 28%), but the assay worked well for NDM-producing isolates (4/4; 100%). CONCLUSIONS Our results indicated that MEPM-SMA-DDST was the most cost-effective assay for the detection of IMP-producing isolates. Therefore, we conclude that MEPM-SMA-DDST is the optimal available assay for clinical first-line screening in IMP-endemic areas such as Japan. However, this assay could not detect NDM-producing isolates, whereas the Etest MP/MPI and MAST-CDS could. When MEPM-SMA-DDST is negative, the Etest MP/MPI and MAST-CDS could be used to obtain supportive data and prevent detection failure for NDM-producing isolates.
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Affiliation(s)
- Daisuke Sakanashi
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan
| | - Makoto Kawachi
- Department of Clinical Laboratory, Konan Kosei Hospital, Aichi, Japan
| | - Yuki Uozumi
- Department of Clinical Laboratory, Konan Kosei Hospital, Aichi, Japan
| | - Mitsuru Nishio
- Department of Clinical Laboratory, Komaki City Hospital, Aichi, Japan
| | - Yuki Hara
- Department of Clinical Laboratory, Japanese Red Cross Nagoya Daini Hospital, Aichi, Japan
| | - Hiroyuki Suematsu
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan
| | - Mao Hagihara
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan
| | - Naoya Nishiyama
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan
| | - Nobuhiro Asai
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan
| | - Yusuke Koizumi
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan
| | - Yuka Yamagishi
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan
| | - Hiroshige Mikamo
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan.
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Genc O, Aksu E, Gulcan A. The identification of carbapenemase types in Enterobacteriaceae by using molecular assay and phenotyping confirmation tests. J Microbiol Methods 2016; 125:8-11. [DOI: 10.1016/j.mimet.2016.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/17/2016] [Accepted: 03/19/2016] [Indexed: 01/02/2023]
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Triton Hodge Test: Improved Protocol for Modified Hodge Test for Enhanced Detection of NDM and Other Carbapenemase Producers. J Clin Microbiol 2015; 54:640-9. [PMID: 26719442 DOI: 10.1128/jcm.01298-15] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 12/20/2015] [Indexed: 11/20/2022] Open
Abstract
Accurate detection of carbapenemase-producing Gram-negative bacilli is of utmost importance for the control of nosocomial spread and the initiation of appropriate antimicrobial therapy. The modified Hodge test (MHT), a carbapenem inactivation assay, has shown poor sensitivity in detecting the worldwide spread of New Delhi metallo-β-lactamase (NDM). Recent studies demonstrated that NDM is a lipoprotein anchored to the outer membrane in Gram-negative bacteria, unlike all other known carbapenemases. Here we report that membrane anchoring of β-lactamases precludes detection of carbapenemase activity by the MHT. We also show that this limitation can be overcome by the addition of Triton X-100 during the test, which allows detection of NDM. We propose an improved version of the assay, called the Triton Hodge test (THT), which allows detection of membrane-bound carbapenemases with the addition of this nonionic surfactant. This test was challenged with a panel of 185 clinical isolates (145 carrying known carbapenemase-encoding genes and 40 carbapenemase nonproducers). The THT displayed test sensitivity of >90% against NDM-producing clinical isolates, while improving performance against other carbapenemases. Ertapenem provided the highest sensitivity (97 to 100%, depending on the type of carbapenemase), followed by meropenem (92.5 to 100%). Test specificity was not affected by the addition of Triton (87.5% and 92.5% with ertapenem and meropenem, respectively). This simple inexpensive test confers a large improvement to the sensitivity of the MHT for the detection of NDM and other carbapenemases.
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Osei Sekyere J, Govinden U, Essack SY. Review of established and innovative detection methods for carbapenemase-producing Gram-negative bacteria. J Appl Microbiol 2015; 119:1219-33. [DOI: 10.1111/jam.12918] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 01/15/2023]
Affiliation(s)
- J. Osei Sekyere
- Antimicrobial Research Unit; School of Health Sciences; University of KwaZulu-Natal; Durban South Africa
| | - U. Govinden
- Antimicrobial Research Unit; School of Health Sciences; University of KwaZulu-Natal; Durban South Africa
| | - S. Y. Essack
- Antimicrobial Research Unit; School of Health Sciences; University of KwaZulu-Natal; Durban South Africa
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