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OXA-48

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https://www.readbyqxmd.com/read/29150373/chromagar-msupercarba-and-rapidec%C3%A2-carba-np-test-for-detection-of-carbapenemase-producing-enterobacteriaceae
#1
Meritxell Garcia-Quintanilla, Laurent Poirel, Patrice Nordmann
A novel chromogenic medium CHROMagar mSuperCARBA was evaluated to detect carbapenem-resistant Gram-negatives. This medium is as sensitive and as specific as the SUPERCARBA medium for detecting KPC, MBL and OXA-48-type producers (100% and 100%, respectively) and is compatible with subsequent testing of carbapenemase activity using the RAPIDEC(®) CARBA NP.
October 19, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29146039/clinical-features-and-outcomes-of-bacteraemia-due-to-oxa-48-like-carbapenemase-producing-klebsiella-pneumoniae-in-a-tertiary-hospital
#2
Ana Madueño, Jonathan González-García, María Del Mar Alonso Socas, María Antonia Miguel Gómez, María Lecuona
INTRODUCTION: Limited therapeutic options and high mortality make the management of OXA-48-like carbapenemase-producing Klebsiella pneumoniae (KPOXA-48) bacteraemia complicated. The aim of the study was to describe the clinical characteristics of KPOXA-48 bacteraemia between October 2013 and December 2016. MATERIAL AND METHODS: The variables to analyse were retrospectively collected from medical records. Carbapenemase production was confirmed by phenotypic and molecular methods...
November 13, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/29141402/-epidemiology-of-the-carbapenemase-producing-enterobacteriaceae-spread-in-a-community-acute-hospital-and-a-non-acute-rehabilitation-hospital-in-madrid
#3
M López-Dosil, C Bischofberge, D Sáez, C García-Picazo
OBJECTIVE: In Spain, the overall prevalence of carbapenem-resistant Enterobacteriaceae (CRE) is increasing. We describe the epidemiological, clinical and microbiological characteristics features of patients with colonization or infection due to CRE in two hospitals in the north-west of Madrid during two years. One hospital was a community acute hospital and the second one was a non-acute rehabilitation hospital. METHODS: A total of 197 CPE isolates were detected during 2013-2014...
November 14, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29141051/molecular-and-epidemiological-characterization-of-carbapenemase-producing-enterobacteriaceae-in-norway-2007-to-2014
#4
Ørjan Samuelsen, Søren Overballe-Petersen, Jørgen Vildershøj Bjørnholt, Sylvain Brisse, Michel Doumith, Neil Woodford, Katie L Hopkins, Bettina Aasnæs, Bjørg Haldorsen, Arnfinn Sundsfjord
The prevalence of carbapenemase-producing Enterobacteriaceae (CPE) is increasing worldwide. Here we present associated patient data and molecular, epidemiological and phenotypic characteristics of all CPE isolates in Norway from 2007 to 2014 confirmed at the Norwegian National Advisory Unit on Detection of Antimicrobial Resistance. All confirmed CPE isolates were characterized pheno- and genotypically, including by whole genome sequencing (WGS). Patient data were reviewed retrospectively. In total 59 CPE isolates were identified from 53 patients...
2017: PloS One
https://www.readbyqxmd.com/read/29133556/interspecies-transmission-of-the-blaoxa-48-gene-from-klebsiella-pneumoniae-high-risk-clone-st147-to-different-escherichia-coli-clones-in-the-gut-microbiota
#5
Carmen Potel, Adriana Ortega, Lucía Martínez-Lamas, Verónica Bautista, Benito Regueiro, Jesús Oteo
OXA-48-producing K. pneumoniae (OXA-Kpn) have quickly spread in Spain and other European countries (1).….
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29120560/klebsiella-pneumoniae-oxa-48-in-a-urology-patient-case-report
#6
Ines Jajić, Ana Benčić, Marko Siroglavić, Gernot Zarfel, Boris Ružić, Ivan Pezelj, Branka Bedenić
We present an isolate of Klebsiella pneumoniae OXA-48 isolated in a 68-year-old man who underwent radical prostatectomy due to prostate cancer. The antibiotic susceptibility testing to a wide range of antibiotics was performed by disk diffusion method and determination of minimal inhibitory concentrations. The isolate was classified as multidrug-resistant. It showed intermediate susceptibility to imipenem and meropenem, resistance to ertapenem, and sensitivity only to colistin, amikacin, and trimethoprim-sulfamethoxazole...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29115680/mastdiscs-combi-carba-plus-a-simple-discrimination-method-for-carbapenemase-producing-enterobacteriaceae-including-oxa-48-type-producers
#7
Yusuke Ohsaki, Ryoichi Kubo, Jonathan Hobson, Mya Davies, Shunsuke Osaka, Wataru Hayashi, Yui Taniguchi, Shota Koide, Yukiko Nagano, Noriyuki Nagano
Not only detection of carbapenemases but also identification of their types accurately and rapidly in Enterobacteriaceae is still a major challenge for clinical laboratories in order to prevent the intrusion and the transmission of carbapenemase-producing Enterobacteriaceae. This study aimed to evaluate the performance of the MASTDISCS® combi Carba plus disc system in the identification of different carbapenemase types, including OXA-48-type carbapenemase for which no specific enzyme inhibitors have so far been available...
November 8, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/29115369/useful-independent-factors-for-distinguish-infection-and-colonization-in-patients-with-urinary-carbapenemase-producing-enterobacteriaceae-isolation
#8
L López-González, F J Candel, J M Viñuela-Prieto, J González-Del Castillo, A B García, I Pena, I Rodríguez-Avial
OBJECTIVE: The aim of this study is to know epidemiologic and clinical differences among those patients colonized or infected by carbapenemase-producing Enterobacteriaceae (CPE) and develop a predictive model to facilitate the clinical approach concerning to start antimicrobial therapy. METHODS: Observational retrospective cohort study was performed involving all patients with Urine carbapenemase-producing Enterobacteriaceae isolation (UCPEI) between November 2013 and July 2015...
November 7, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29107415/enhanced-detection-of-carbapenemase-producing-enterobacteriaceae-by-an-optimized-phenol-red-assay
#9
Jeremy Surre, Isabelle Canard, Pierrot Bourne-Branchu, Estelle Courbiere, Christine Franceschi, Sonia Chatellier, Alex van Belkum, Mahendrasingh Ramjeet
Screening for the detection of carbapenemase-producing bacteria still encounters issues related to workflow, limit of detection, or qualitative interpretation. We developed a spectrophotometry-based version of the Carba NP phenol red assay (Nordmann et al., 2012) in a microtiter plate format, compatible with low bacterial cell counts. We were able to detect highly active carbapenemases such as KPC and IMP in 30min. A wider range of carbapenemases including OXA-48 were detected using higher inocula, still being competitive compared with currently available phenol red assays...
September 18, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29091199/monitoring-microevolution-of-oxa-48-producing-klebsiella-pneumoniae-st147-in-a-hospital-setting-by-smrt-sequencing
#10
Andreas E Zautner, Boyke Bunk, Yvonne Pfeifer, Cathrin Spröer, Utz Reichard, Helmut Eiffert, Simone Scheithauer, Uwe Groß, Jörg Overmann, Wolfgang Bohne
Objectives: Carbapenemase-producing Klebsiella pneumoniae pose an increasing risk for healthcare facilities worldwide. A continuous monitoring of ST distribution and its association with resistance and virulence genes is required for early detection of successful K. pneumoniae lineages. In this study, we used WGS to characterize MDR blaOXA-48-positive K. pneumoniae isolated from inpatients at the University Medical Center Göttingen, Germany, between March 2013 and August 2014. Methods: Closed genomes for 16 isolates of carbapenemase-producing K...
October 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29076442/-carbapenemase-producing-enterobacteriaceae-in-the-netherlands-unnoticed-spread-to-several-regions
#11
T Leenstra, T Bosch, A L Vlek, M J M Bonten, I M van der Lubben, S C de Greeff
- Carbapenemase producing Enterobacteriaceae (CPE), including Klebsiella pneumoniae and Escherichia coli, are only sporadically seen in the Netherlands and then mainly in patients who have been transferred from foreign hospitals.- CPE are resistant to virtually all beta-lactam antibiotics, including carbapenems, e.g., meropenem and imipenem. Several genes, e.g., OXA-48, KPC and NDM-1, code for carbapenemase enzymes that deactivate carbapenems.- Control of CPE focuses on timely identification of patients who are infected or are carriers and the application of preventive measures to prevent spread...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29074053/optimal-detection-of-carbapenemase-producing-enterobacteriaceae-from-rectal-samples-a-role-for-enrichment
#12
H Ciesielczuk, L M Phee, H Dolphin, M Wilks, B P Cherian, D W Wareham
BACKGROUND: Successful laboratory detection of carbapenemase-producing Enterobacteriaceae (CPE) in patient surveillance samples is a diagnostic challenge. In the absence of a gold standard for screening rectal swabs for CPE many phenotypic, genotypic, culture and non-culture based assays have been proposed for identifying these bacteria. AIM: To develop and optimise a CPE screening protocol capable of identifying all commonly encountered CPE, including those producing OXA-48-like carbapenemases...
October 23, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29069970/first-report-of-oxa-48-producing-escherichia-coli-in-croatia-and-confirmed-intergenic-transfer-of-a-plasmid-carrying-blaoxa-48-from-klebsiella-pneumoniae
#13
Zrinka Bošnjak, Monika A Chlebowicz, Ivana Mareković, Violeta Rezo Vranješ, John W Rossen, Ana Budimir
No abstract text is available yet for this article.
October 26, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/29063891/identification-of-carbapenemase-mediated-resistance-among-enterobacteriaceae-bloodstream-isolates-a-molecular-study-from-india
#14
Srujana Mohanty, Mittal Gajanand, Rajni Gaind
Acquired resistance in carbapenem-resistant Enterobacteriaceae (CRE) conferred by carbapenemases is a major concern worldwide. Consecutive, non-duplicate isolates of Escherichia coli (EC) and Klebsiella pneumoniae from clinically diagnosed bloodstream infections were screened for the presence of carbapenem resistance by standard disk-diffusion method and minimum inhibitory concentration breakpoints using the Clinical and Laboratory Standards Institute guidelines. Carbapenemase-encoding genes were amplified by polymerase chain reaction...
July 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29063446/extensive-colonization-with-carbapenemase-producing-microorganisms-in-romanian-burn-patients-infectious-consequences-from-the-colectiv-fire-disaster
#15
L E Pirii, A W Friedrich, J W A Rossen, W Vogels, G I J M Beerthuizen, M K Nieuwenhuis, A M D Kooistra-Smid, E Bathoorn
Health care of severe burn patients is highly specialized and may require international patient transfer. Burn patients have an increased risk of developing infections. Patients that have been hospitalized in countries where carbapenemase-producing microorganisms (CPMO) are endemic may develop infections that are difficult to treat. In addition, there is a risk on outbreaks with CPMOs in burn centers. This study underlines that burn patients may extensively be colonized with CPMOs, and it provides best practice recommendations regarding clinical microbiology and infection control...
October 23, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29061754/antimicrobial-activity-of-aztreonam-avibactam-and-comparator-agents-tested-against-contemporary-2016-clinical-enterobacteriaceae-isolates
#16
Helio S Sader, Rodrigo E Mendes, Michael A Pfaller, Dee Shortridge, Robert K Flamm, Mariana Castanheira
A total of 10,451 contemporary (2016) Enterobacteriaceae isolates from 84 United States (U.S.) medical centers and 116 metallo-β-lactamases and/or OXA-48-like producing Enterobacteriaceae from other countries were tested against aztreonam-avibactam and comparators. All U.S. isolates were inhibited at aztreonam-avibactam MIC of ≤8 μg/mL (MIC50/90, ≤0.03/0.12 μg/mL), including KPC-producing (n=102; MIC50/90, 0.25/0.5 μg/mL), multidrug-resistant (n=876; MIC50/90, 0.06/0.25 μg/mL), and extensively drug-resistant (n=111; MIC50/90, 0...
October 23, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29061750/dissemination-and-characteristics-of-a-novel-plasmid-encoded-carbapenem-hydrolyzing-class-d-%C3%AE-lactamase-oxa-436-from-four-patients-involving-six-different-hospitals-in-denmark
#17
Ørjan Samuelsen, Frank Hansen, Bettina Aasnæs, Henrik Hasman, Bjarte Aarmo Lund, Hanna-Kirsti S Leiros, Berit Lilje, Jessin Janice, Lotte Jakobsen, Pia Littauer, Lillian M Søes, Barbara J Holzknecht, Leif P Andersen, Marc Stegger, Paal S Andersen, Anette M Hammerum
The diversity of OXA-48-like carbapenemases is continually expanding. In this study, we describe the dissemination and characteristics of a novel carbapenem-hydrolyzing class D carbapenemase (CHDL) named OXA-436. In total, six OXA-436-producing Enterobacteriaceae isolates including Enterobacter asburiae (n=3), Citrobacter freundii (n=2) and Klebsiella pneumoniae (n=1) were identified in four patients in the period between September 2013 and April 2015. All three species of OXA-436-producing Enterobacteriaceae were found in one patient...
October 23, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29059308/potential-of-high-dose-cefepime-tazobactam-against-multiresistant-gram-negative-pathogens
#18
David M Livermore, Shazad Mushtaq, Marina Warner, Simon J Turner, Neil Woodford
Background: Early β-lactamase inhibitors were combined with established penicillins, but different combinations may be more appropriate to counter current β-lactamase threats, with development facilitated by the US Generating Antibiotic Incentives Now (GAIN) Act. Cefepime/tazobactam is especially attractive, combining an AmpC-stable cephalosporin with a clinically established inhibitor, active against ESBLs and suitable for high-dose administration. Methods: Organisms (n = 563) were clinical isolates submitted to the UK national reference laboratory...
October 20, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29042339/clonal-dissemination-of-oxa-48-producing-enterobacter-cloacae-isolated-from-companion-animals-in-algeria
#19
Massilia Yousfi, Abdelaziz Touati, Anaelle Muggeo, Brazane Mira, Asma Bourouis, Lucien Brasme, Thomas Guillard, Christophe de Champs
OBJECTIVES: The aim of this study was to investigate carbapenemase-producing Enterobacteriaceae (CPE) in companion animals. METHODS: Between October 2015 and April 2016, 533 rectal swabs were obtained from healthy and diseased pets in different cities in Algeria. Samples collected were plated on MacConkey agar supplemented with ertapenem (0.5mg/L). The isolates were identified by MALDI-TOF mass spectroscopy. Antimicrobial susceptibility testing was performed using disk diffusion method...
October 14, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29039717/high-prevalence-of-multidrug-resistant-bacteria-in-libyan-war-casualties-admitted-to-a-tertiary-care-hospital-germany
#20
Benedikt Lohr, Yvonne Pfeifer, Ursel Heudorf, Christoph Rangger, Douglas E Norris, Klaus-Peter Hunfeld
The ongoing Libyan conflict constantly causes victims among the military and civilian population. Cross-border transfer of patients represents a high risk of introducing multidrug-resistant organisms (MDROs), for example, methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci, and carbapenem-resistant gram-negative organisms (CROs), into the country of destination. This study assessed the MDRO status in Libyan war casualties (n = 67) admitted to Northwest Medical Centre in Frankfurt/Main, Germany, from August 2016 till January 2017...
October 17, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
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