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Carba np

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https://www.readbyqxmd.com/read/28613981/detection-of-new-delhi-metallo-%C3%AE-lactamase-variants-ndm-4-ndm-5-and-ndm-7-in-enterobacter-aerogenes-isolated-from-a-neonatal-intensive-care-unit-of-a-north-india-hospital-a-first-report
#1
Nayeem Ahmad, Syed Manazir Ali, Asad U Khan
A total 402 Enterobacteriaceae isolates were recovered from blood and rectal swabs of 1,000 infants admitted to the Neonatal Intensive Care Unit (NICU) of the Jawaharlal Medical College and Hospital Aligarh, India. Carbapenamase producers were determined by Carba NP phenotype biochemical assay. Out of 402 isolates, it was the first time three of the isolates were identified as Enterobacter aerogenes carrying blaNDM-4, blaNDM-5, and blaNDM-7 genes. These genes were identified by polymerase chain reaction (PCR) and sequence analysis...
June 14, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28605515/fri-2-carbapenemase-producing-enterobacter-cloacae-complex-in-the-uk
#2
Danièle Meunier, Jacqueline Findlay, Michel Doumith, Daniel Godoy, Claire Perry, Rachel Pike, Firza Gronthoud, Theresa Shryane, Laurent Poirel, William Welfare, Neil Woodford, Katie L Hopkins
Objectives: Detection of rarer carbapenemases is challenging, as it requires molecular assays with comprehensive coverage or the use of phenotypic methods for the detection of carbapenemase activity. We describe a new class A carbapenemase, FRI-2, in an Enterobacter cloacae complex isolate following implementation of an in-house multiplex PCR for the detection of 'rare' class A carbapenemases. Methods: MICs were determined by agar dilution. A carbapenem-resistant E...
June 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28535303/a-novel-goldnano-carb-test-for-rapid-phenotypic-detection-of-carbapenemases-particularly-oxa-type-in-enterobacteriaceae-pseudomonas-aeruginosa-and-acinetobacter-spp
#3
Arpasiri Srisrattakarn, Aroonlug Lulitanond, Chotechana Wilailuckana, Nicha Charoensri, Jureerut Daduang, Aroonwadee Chanawong
Objectives: To develop a simple gold nanoparticle (AuNP)-based colorimetric test, GoldNano Carb (GoldC), for detecting carbapenemase production in Gram-negative bacteria, compared with updated Carba NP (CNP) and CarbAcineto NP (CAcNP) tests by using PCR methods as gold standard. Methods: Ninety-nine carbapenemase-producing Enterobacteriaceae (CPE), Pseudomonas spp. and Acinetobacter spp. isolates and 89 non-CPE isolates were tested by the GoldC and CNP. Additionally, the CAcNP was performed in the Acinetobacter spp...
May 23, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28533001/evaluation-of-the-rapidec%C3%A2-carba-np-and-%C3%AE-carba%C3%A2-tests-for-rapid-detection-of-carbapenemase-producing-enterobacteriaceae
#4
Stefano Mancini, Nicolas Kieffer, Laurent Poirel, Patrice Nordmann
The analytical performances of the RAPIDEC CARBA NP® (bioMérieux) and the β-CARBA® (Bio-Rad) tests were evaluated for the rapid detection of any known type of carbapenemases in Enterobacteriaceae. An international collection of 149 enterobacterial isolates comprising 111 Carbapenemase-Producing Enterobacteriaceae (CPE) and 38 non-carbapenemase producers was used. CPE included 32 carbapenemase producers of class A (18 KPC-2, 1 FRI-1, 5 SME and 8 IMI), 33 of class B (13 NDM, 11 VIM and 9 IMP) and 46 of class D (15 OXA-48, 14 OXA-181, 10 OXA-204, 3 OXA-232 and 4 OXA-162)...
May 13, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28502395/multicenter-evaluation-of-the-rapidec%C3%A2-carba-np-test-for-rapid-screening-of-carbapenemase-producing-enterobacteriaceae-and-gram-negative-nonfermenters-from-clinical-specimens
#5
Marco Coppi, Alberto Antonelli, Tommaso Giani, Teresa Spanu, Flora Marzia Liotti, Carla Fontana, Walter Mirandola, Raffaele Gargiulo, Agostino Barozzi, Carola Mauri, Luigi Principe, Gian Maria Rossolini
The rapid diagnosis of carbapenemase-producing (CP) bacteria is essential for the management of therapy and infection control. In this study, RAPIDEC® CARBA NP (RCNP) was evaluated for the rapid screening of CP Enterobacteriaceae, Acinetobacter baumannii complex, and Pseudomonas aeruginosa from clinical specimens collected at five Italian hospitals. Firstly, each site tested 20 well-characterized strains in a blinded fashion. Secondly, each center prospectively tested 25 isolates from blood cultures processed with a rapid workflow (6h after subculture) and 25 isolates from other specimens processed after an overnight culture...
April 27, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28486169/characterization-of-oxa-48-like-producing-enterobacteriaceae-isolated-from-river-water-in-algeria
#6
Rima Tafoukt, Abdelaziz Touati, Thongpan Leangapichart, Sofiane Bakour, Jean-Marc Rolain
The spread of carbapenemase-producing Enterobacteriaceae (CPE) is a significant problem for healthcare worldwide. The prevalence of carbapenem-resistant Enterobacteriaceae (CPE) in water environments in Algeria are unknown. The aim of this study was to screen for the presence of CPE isolates in the Soummam River in Bejaia, Algeria. Isolates of Enterobacteriaceae recovered from twelve samples of river water and showing reduced susceptibility to carbapenems were included in this study. The isolates were identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS)...
April 30, 2017: Water Research
https://www.readbyqxmd.com/read/28445009/evaluation-of-six-phenotypic-methods-for-the-detection-of-carbapenemases-in-gram-negative-bacteria-with-characterized-resistance-mechanisms
#7
Kunling Sun, Xiuyu Xu, Jinrong Yan, Liping Zhang
BACKGROUND: We compared the performance of the modified Hodge test (MHT), Triton Hodge test (THT), Carba NP test (CNPt), simplified Carba NP test (CNPt-direct), blue-Carba NP test (BCT), and carbapenem inactivation method (CIM) for rapid and accurate carbapenemase detection. METHODS: The methods were evaluated by using 256 gram-negative isolates, including 197 Enterobacteriaceae (79 Enterobacter spp., 74 Klebsiella spp., 33 Escherichia coli, 10 Citrobacter spp., and 1 Serratia marcescens), 51 Acinetobacter baumannii, and 8 Pseudomonas aeruginosa strains...
July 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28404676/multicenter-performance-assessment-of-carba-np-test
#8
Scott A Cunningham, Brandi Limbago, Maria Traczewski, Karen Anderson, Meredith Hackel, Janet Hindler, Dan Sahm, Efe Alyanak, Adrian Lawsin, Christopher A Gulvik, Tom J B de Man, Jayawant N Mandrekar, Audrey N Schuetz, Stephen Jenkins, Romney Humphries, Elizabeth Palavecino, Shawn Vasoo, Robin Patel
Eighty Gram-negative bacilli (54 Enterobacteriaceae and 26 nonfermenting Gram-negative bacilli) obtained from multiple institutions in the United States were distributed in a blinded manner to seven testing laboratories to compare their performance of a test for detection of carbapenemase production, the Carba NP test. The Carba NP test was performed by all laboratories, following the Clinical and Laboratory Standards Institute (CLSI) procedure. Site-versus-site comparisons demonstrated a high level of consistency for the Carba NP assay, with just 3/21 site comparisons yielding a difference in sensitivity (P < 0...
June 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28384185/evaluation-of-a-modified-meropenem-hydrolysis-assay-on-a-large-cohort-of-kpc-and-vim-carbapenemase-producing-enterobacteriaceae
#9
Adriana Calderaro, Mirko Buttrini, Maddalena Piergianni, Sara Montecchini, Monica Martinelli, Silvia Covan, Giovanna Piccolo, Maria Cristina Medici, Maria Cristina Arcangeletti, Carlo Chezzi, Flora De Conto
Carbapenem-resistant Enterobacteriaceae (CRE) have spread globally and represent a serious and growing threat to public health. The introduction of rapid and sensitive methods for the detection of carbapenemase-producing bacteria is of increasing importance. The carbapenemase production can be detected using non-molecular methods (such as the modified Hodge test, the synergy test, the Carba NP test and the antibiotic hydrolysis assays) and DNA-based methods. In this study, we propose a modified version of a previously described meropenem hydrolysis assay (MHA) by MALDI-TOF MS for the phenotypic detection in 2h of carbapenemase-producing Enterobacteriaceae...
2017: PloS One
https://www.readbyqxmd.com/read/28367024/carba-np-as-a-simpler-rapid-cost-effective-and-a-more-sensitive-alternative-to-other-phenotypic-tests-for-detection-of-carbapenem-resistance-in-routine-diagnostic-laboratories
#10
Shivani Shinde, Rajarshi Gupta, Shweta S Raut, Gita Nataraj, Preeti R Mehta
PURPOSE: Resistance to carbapenems due to carbapenemases has been increasingly noticed in Enterobacteriaceae. Clinical and Laboratory Standards Institute (CLSI) has recommended the latest Carba NP (CNP) test as a confirmatory test for carbapenemase production in Enterobacteriaceae. Low sensitivity of disk diffusion (DD) and modified Hodge test (MHT) may result in missing out of resistant strains which can adversely affect clinical management. The present study compares three phenotypic tests - CNP test, DD, and MHT for detection of carbapenemase production...
April 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28333363/evaluation-of-the-%C3%AE-carba%C3%A2-test-a-colorimetric-test-for-the-rapid-detection-of-carbapenemase-activity-in-gram-negative-bacilli
#11
Sandrine Bernabeu, Laurent Dortet, Thierry Naas
Objectives: There is an urgent need for accurate and fast diagnostic tests to identify carbapenemase-producing bacteria. Here, we have evaluated a novel colorimetric test (the β-CARBA™ test; Bio-Rad) to detect carbapenemase-producing Gram-negative bacilli from cultured colonies. Methods: The performance of the β-CARBA™ test was compared with that of the Carba NP test (or the CarbAcineto NP test) and RAPIDEC ® CARBA NP (bioMérieux) using a collection of 290 isolates with characterized β-lactamase content...
June 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28303831/strengths-and-limitations-of-various-screening-methods-for-carbapenem-resistant-enterobacteriaceae-including-new-method-recommended-by-clinical-and-laboratory-standards-institute-2017-a-tertiary-care-experience
#12
Agila Kumari Pragasam, Balaji Veeraraghavan, Yamuna Devi Bakthavatchalam, Radha Gopi, Raziya Fathima Aslam
Carbapenemase-mediated carbapenem resistance is a major concern across the world. Rapid detection of carbapenemase-producing organisms is of great importance in clinical settings. However, it is essential to have a test with good sensitivity and specificity. The aim of the study was to compare the performance of RAPIDEC® CARBA NP and modified carbapenem inactivation method (mCIM) recommended by Clinical and Laboratory Standards Institute guideline 2017. A total of ninety carbapenem resistant Escherichia coli and Klebsiella pneumoniae have been tested...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28286140/detection-of-carbapenemase-producers-evaluating-the-performance-of-the-carbapenem-inactivation-method-and-carba-np-test-versus-multiplex-pcr
#13
Lamiaa A Madkour, May S Soliman, Dina M Hassan, Noha S Soliman, Yasmin A ElMahdy
OBJECTIVES: With a worrisome surge of carbapenem-resistant bacterial isolates, the diagnostic arsenal has become in dire need of affordable and timely assays to detect the rapidly transmissible carbapenemases. Employing multiplex PCR as a reference method, the purpose of the present study was to compare the performance of the carbapenem inactivation method (CIM) and the Carba NP test in the detection of carbapenemase-producers. METHODS: A panel of 203 Gram-negative bacterial isolates screened for carbapenem resistance were subjected to the CIM and Carba NP test...
June 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28223374/enterobacter-cloacae-complex-isolates-harboring-blanmc-a-or-blaimi-type-class-a-carbapenemase-genes-on-novel-chromosomal-integrative-elements-and-plasmids
#14
David A Boyd, Laura F Mataseje, Ross Davidson, Johannes A Delport, Jeff Fuller, Linda Hoang, Brigitte Lefebvre, Paul N Levett, Diane L Roscoe, Barbara M Willey, Michael R Mulvey
Carbapenem-resistant Enterobacter cloacae complex isolates submitted to a reference laboratory from 2010 to 2015 were screened by PCR for seven common carbapenemase gene groups, namely, KPC, NDM, OXA-48, VIM, IMP, GES, and NMC-A/IMI. Nineteen of the submitted isolates (1.7%) were found to harbor Ambler class A blaNMC-A or blaIMI-type carbapenemases. All 19 isolates were resistant to at least one carbapenem but susceptible to aminoglycosides, trimethoprim-sulfamethoxazole, tigecycline, and ciprofloxacin. Most isolates (17/19) gave positive results with the Carba-NP test for phenotypic carbapenemase detection...
May 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28158310/retrospective-and-prospective-evaluation-of-the-carbapenem-inactivation-method-for-the-detection-of-carbapenemase-producing-enterobacteriaceae
#15
Lauraine Gauthier, Remy A Bonnin, Laurent Dortet, Thierry Naas
BACKGROUND: There is an urgent need for accurate and rapid diagnostic tests to identify carbapenemase producing enterobacteria (CPE). Here, we have evaluated the Carbapenem Inactivation Method (CIM) test to detect CPEs from cultured colonies. METHODS: A total of 256 enterobacterial isolates were used to evaluate the performance of the CIM in comparison to Carba NP test and molecular detection used a reference method. Ninety three well-characterized isolates (including 29 non-CPE and 63 CPEs of worldwide origin) with decreased susceptibility to at least one carbapenem were used to (i) evaluate the efficacy of CIM test and (ii) to compare it to the Carba NP test...
2017: PloS One
https://www.readbyqxmd.com/read/28151042/occurrence-of-blandm-1-and-blandm-5-in-a-tertiary-referral-hospital-of-north-india
#16
Deepjyoti Paul, Atul Garg, Amitabha Bhattacharjee
Antimicrobial resistance poses a great challenge to clinicians leaving very limited treatment options available. A panel of carbapenem-resistant bacterial isolates was selected based on Rapidec Carba NP test from a total of 900 samples, which were collected from different specialities hospitals of Kanpur, India. Carba NP-positive isolates were screened for carbapenemases, extended-spectrum beta-lactamases (ESBLs), quinolone resistance, and 16s methyltransferase genes. Presence of diverse blaNDM (blaNDM-1 and blaNDM-5) were detected and horizontal transferability was determined by transformation and conjugation assay...
February 2, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28131671/comparison-of-two-rapid-biochemical-tests-and-four-chromogenic-selective-media-for-detection-of-carbapenemase-producing-gram-negative-bacteria
#17
Vladimira Hinić, Ivo Amrein, Sabrina Stammler, Judith Heckendorn, Dominik Meinel, Reno Frei, Adrian Egli
We evaluated RAPIDEC® CARBA NP, Neo-Rapid CARB, chromID® CARBA SMART (CARB/OXA), Brilliance™ CRE/ESBL, ChromArt CRE and BBL™ CHROMagar™ CPE for the detection of carbapenemase-producing bacteria. The analytical sensitivity of RAPIDEC® CARBA NP was better than that of Neo-Rapid CARB. A combination of carbapenemase and ESBL screening plates could be advantageous.
January 25, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28093482/dissemination-of-blaoxa-58-in-proteus-mirabilis-isolates-from-germany
#18
Felix Lange, Niels Pfennigwerth, Sonja Gerigk, Frank Gohlke, Klaus Oberdorfer, Ingvill Purr, Nikolaus Wohanka, Andreas Roggenkamp, Sören G Gatermann, Martin Kaase
Objectives: Characterization of Proteus mirabilis isolates harbouring bla OXA-58 with emphasis on the genetic environment of this resistance determinant. Methods: Strains of P. mirabilis ( n  =   37) isolated from different patients were tested for the presence of bla OXA-58 . The genetic context of bla OXA-58 was determined by WGS of two strains and Sanger sequencing. Clonality of the strains was assessed by PFGE. Susceptibility testing was performed by microdilution according to EUCAST...
May 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28077701/comparison-of-11-phenotypic-assays-for-accurate-detection-of-carbapenemase-producing-enterobacteriaceae
#19
Pranita D Tamma, Belita N A Opene, Andrew Gluck, Krizia K Chambers, Karen C Carroll, Patricia J Simner
Early identification of carbapenemase-producing Enterobacteriaceae (CPE) is essential to prevent their dissemination within health care settings. Our objective was to evaluate the accuracy of 11 phenotypic assays for the detection of CPE. Two collections of carbapenem-resistant Enterobacteriaceae (CRE) isolates were evaluated, including 191 retrospective isolates (122 CP-CRE and 69 non-CP isolates) as well as 45 prospective clinical isolates (15 CP-CRE and 30 non-CP-CRE) obtained over a 3-month period. The sensitivity and specificity of each test was determined, with molecular genotype serving as the gold standard...
April 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28007530/utilizing-the-carba-np-test-as-an-indicator-of-expression-level-of-carbapenemase-genes-in-enterobacteriaceae
#20
Takaya Segawa, Mari Matsui, Masato Suzuki, Atsuko Tsutsui, Makoto Kuroda, Keigo Shibayama, Satowa Suzuki
The Carba NP test was developed to detect carbapenemase-producing Enterobacteriaceae, and uses imipenem as the reaction substrate. In Japan, IMP-6 metallo-β-lactamase (MBL) producers, which are usually resistant to meropenem but susceptible to imipenem, and IMP-1 MBL producers, which are usually resistant to both carbapenems are prevalent. We performed the Carba NP test with IMP-6 and IMP-1 MBL producers, and both types were detected by the Carba NP test with high sensitivity. All IMP-1 MBL producers were detected by the Carba NP test, but the minimum inhibitory concentrations (MICs) of imipenem varied from 0...
December 19, 2016: Journal of Microbiological Methods
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