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carbapenemase resistant

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https://www.readbyqxmd.com/read/28526792/environmental-spread-of-ndm-1-producing-multi-drug-resistant-bacteria-in-dhaka-bangladesh
#1
Mohammad Aminul Islam, Moydul Islam, Rashedul Hasan, M Iqbal Hossain, Ashikun Nabi, Mahdia Rahman, Wil H F Goessens, Hubert P Endtz, Alexandria B Boehm, Shah M Faruque
Resistance to carbapenem antibiotics through the production of New Delhi Metallo-β-lactamase-1 (NDM-1) constitutes an emerging challenge in the treatment of bacterial infections. To monitor possible source of spread of these organisms in Dhaka, Bangladesh, we conducted comparative analysis of waste water samples from hospital adjacent areas (HAR) and from community areas (COM) as well as public tap water samples for the occurrence and characteristics of NDM-1 producing bacteria. Of 72 HAR samples tested 51 (71%) were positive for NDM-1-producing bacteria as evidenced by phenotypic tests and the presence of blaNDM-1 gene, compared to 5 of 41 (12...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28522700/draft-genome-sequences-of-two-carbapenemase-producing-acinetobacter-baumannii-clinical-strains-isolated-from-albanian-and-togolese-patients
#2
Mohamed M H Abdelbary, Guy Prod'hom, Gilbert Greub, Laurence Senn, Dominique S Blanc
We report here the draft genome sequences of two multidrug-resistant Acinetobacter baumannii clinical strains, H31499 and H31506, which were isolated at the Lausanne University Hospital in 2015 from an Albanian and a Togolese patient, respectively.
May 18, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28520867/activity-of-ceftolozane-tazobactam-against-surveillance-and-problem-enterobacteriaceae-pseudomonas-aeruginosa-and-non-fermenters-from-the-british-isles
#3
David M Livermore, Shazad Mushtaq, Daniele Meunier, Katie L Hopkins, Robert Hill, Rachael Adkin, Aiysha Chaudhry, Rachel Pike, Peter Staves, Neil Woodford
Background: We assessed the activity of ceftolozane/tazobactam against consecutive isolates collected in the BSAC Bacteraemia Surveillance from 2011 to 2015 and against 'problem' isolates sent to the UK national reference laboratory from July 2015, when routine testing began. Methods: Susceptibility testing was by BSAC agar dilution with resistance mechanisms identified by PCR and interpretive reading. Results: Data were reviewed for 6080 BSAC surveillance isolates and 5473 referred organisms...
May 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28515215/an-outbreak-of-ndm-1-producing-klebsiella-pneumoniae-in-a-dutch-hospital-with-interspecies-transfer-of-the-resistance-plasmid-and-unexpected-occurrence-in-unrelated-healthcare-centers
#4
Thijs Bosch, Suzanne P M Lutgens, Mirjam H A Hermans, Peter C Wever, Peter M Schneeberger, Nicole H M Renders, Alexander C A P Leenders, Jan A J W Kluytmans, Annelot Schoffelen, Daan Notermans, Sandra Witteveen, Erik Bathoorn, Leo M Schouls
Introduction. In the Netherlands, the number of cases with New Delhi metallo-beta-lactamase (NDM)-positive Enterobacteriaceae is low. Here, we report an outbreak of NDM-1 producing Klebsiella pneumoniae in a Dutch hospital with interspecies transfer of the resistance plasmid and unexpected occurrence in other unrelated healthcare centers (HCCs).Methods. Next-generation sequencing was performed on 250 carbapenemase-producing Enterobacteriaceae isolates including 42 NDM-positive isolates obtained from 29 persons at the outbreak site...
May 17, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28515213/rapid-identification-of-five-classes-of-carbapenem-resistance-genes-directly-from-rectal-swabs-using-the-xpert%C3%A2-carba-r-assay
#5
Nicholas M Moore, Rafael Cantón, Edoardo Carretto, Lance R Peterson, Robert L Sautter, Maria M Traczewski
Carbapenemase-producing organisms (CPO) have been identified by global health leaders as an urgent threat. Detection of patients with gastrointestinal carriage of CPO is necessary to interrupt their spread within healthcare facilities. In this multi-site study, we assessed the performance of the Xpert® Carba-R test, a rapid real-time PCR (qPCR) assay that detects five families of carbapenemase genes (blaIMP, blaKPC, blaNDM, blaOXA-48, and blaVIM) directly from rectal swab specimens. Using dual swabs, specimens from 755 patients were collected and tested prospectively...
May 17, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28512626/anti-restriction-protein-klcahs-promotes-dissemination-of-carbapenem-resistance
#6
Wei Liang, Yingzhou Xie, Wei Xiong, Yu Tang, Gang Li, Xiaofei Jiang, Yuan Lu
Carbapenemase-producing Klebsiella pneumoniae (KPC) has emerged and spread throughout the world. A retrospective analysis was performed on carbapenem-resistant K. pneumoniae isolated at our teaching hospital during the period 2009-2010, when the initial outbreak occurred. To determine the mechanism(s) that underlies the increased infectivity exhibited by KPC, Multilocus Sequence Typing (MLST) was conducted. A series of plasmids was also extracted, sequenced and analyzed. Concurrently, the complete sequences of blaKPC-2-harboring plasmids deposited in GenBank were summarized and aligned...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28511381/prevalence-of-carbapenem-resistant-non-fermenting-gram-negative-bacterial-infection-and-identification-of-carbapenemase-producing-nfgnb-isolates-by-simple-phenotypic-tests
#7
Jane Esther, Diego Edwin, Uma
INTRODUCTION: Non-Fermenting Gram negative bacilli (NFGNB) are emerging multi-drug resistant pathogens causing nosocomial infections. In recent years, carbapenem resistance in NFGNB has increased due to a variety of drug resistance mechanisms, the most common being production of carbapenemases. AIM: To detect carbapenemase and metallo-β-lactamase (MBL) production in NFGNBs by four phenotypic tests and to compare the various phenotypic methods for detection of carbapenemase and MBL production in nosocomial NFGNB isolates...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507322/rapid-susceptibility-profiling-of-carbapenem-resistant-klebsiella-pneumoniae
#8
K T Mulroney, J M Hall, X Huang, E Turnbull, N M Bzdyl, A Chakera, U Naseer, E M Corea, M J Ellington, K L Hopkins, A L Wester, O Ekelund, N Woodford, T J J Inglis
The expanding global distribution of multi-resistant Klebsiella pneumoniae demands faster antimicrobial susceptibility testing (AST) to guide antibiotic treatment. Current ASTs rely on time-consuming differentiation of resistance and susceptibility after initial isolation of bacteria from a clinical specimen. Here we describe a flow cytometry workflow to determine carbapenem susceptibility from bacterial cell characteristics in an international K. pneumoniae isolate collection (n = 48), with a range of carbapenemases...
May 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28507112/mcr-1-and-oxa-48-in-vivo-acquisition-in-kpc-producing-escherichia-coli-after-colistin-treatment
#9
Racha Beyrouthy, Frederic Robin, Aude Lessene, Igor Lacombat, Laurent Dortet, Thierry Naas, Valérie Ponties, Richard Bonnet
The spread of mcr-1-encoding plasmids into carbapenem-resistant Enterobacteriaceae raises concerns about the emergence of untreatable bacteria. We report the acquisition of mcr-1 in a carbapenem- resistant E. coli after a 3-week course of colistin in a patient repatriated to France from Portugal. Whole-genome sequencing revealed that the KPC-producing E. coli strain acquired two plasmids, an IncL OXA-48-encoding plasmid and an IncX4 mcr-1-encoding plasmid. This is the first report of mcr-1 in carbapenemase-encoding bacteria in France...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28506784/healthcare-personnelintestinal-colonization-with-multidrug-resistant-organisms
#10
Brooke K Decker, Anna F Lau, John P Dekker, Christine D Spalding, Ninet Sinaii, Sean Conlan, David K Henderson, Julia A Segre, Karen M Frank, Tara N Palmore
OBJECTIVES: This study aims to assess the association between patient contact and intestinal carriageof multidrug-resistant organisms (MDRO) by sampling healthcare personnel (HCP) and staff without patient contact. METHODS: For this observational study, we recruited400HCPwho worked in our 200-bed research hospitaland 400 subjectswithout patient contact between November 2013 and February 2015.Participants submitted two self-collected perirectal swabsand a questionnaire...
May 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28503496/prevalence-of-acquired-carbapenemase-genes-in-klebsiella-pneumoniae-by-multiplex-pcr-in-isfahan
#11
Farzin Khorvash, Mohammed Reza Yazdani, Ali Asghar Soudi, Shiva Shabani, Nirvana Tavahen
BACKGROUND: Multi-drug resistant Klebsiella pneumoniae has been considered as a serious global threat. This study was done to investigate carbapenemase producing genomes among K. pneumoniae isolates in Isfahan, Central Iran. MATERIALS AND METHODS: In a cross-sectional study from 2011 to 2012, 29 carbapenem resistant (according to disc diffusion method) carbapenemase producing (according to modified Hodge test) K. pneumoniae strains were collected from Intensive Care Unit (ICUs) of Al-Zahra referral Hospital...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28487209/molecular-characterisation-of-carbapenemases-in-urban-pigeon-droppings-in-france-and-algeria
#12
Houda Morakchi, Lotfi Loucif, Djamila Gacemi-Kirane, Jean-Marc Rolain
OBJECTIVES: The main objective of this study was to detect the presence of carbapenemase-encoding genes in stool samples of urban pigeons. METHODS: Stool samples were collected from 73 pigeons in two Mediterranean cities, namely Marseille (France) and Annaba (Algeria). Faecal samples were screened by real-time PCR and standard PCR for the presence of carbapenemase-encoding genes. RESULTS: Carbapenem resistance genes were detected in 16 (21...
May 6, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28486840/molecular-characterization-of-carbapenem-resistant-enterobacteriaceae-yields-increasing-rates-of-ndm-1-carbapenemases-and-colistin-resistance-in-an-oxa-48-endemic-area
#13
Zeynep Cizmeci, Elif Aktas, Baris Otlu, Ozlem Acikgoz, Seyhan Ordekci
We aimed to characterize carbapenem-resistant isolates in a tertiary hospital in Istanbul, Turkey, high-prevelance area for OXA-48 producers. About 76 Enterobacteriaceae clinical isolates were included. Carbapenemase production was detected by Carbapenem Inactivation Method and carbapenemase genes were investigated by PCR. The clonal relationships were evaluated by AP-PCR. Nineteen Klebsiella pneumoniae isolates were colistin resistant. About 75 isolates yielded carbapenemase by CIM. 52 OXA-48, 17 NDM-1 and 2 VIM-5 carbapenemase genes were detected...
May 9, 2017: Journal of Chemotherapy
https://www.readbyqxmd.com/read/28486169/characterization-of-oxa-48-like-producing-enterobacteriaceae-isolated-from-river-water-in-algeria
#14
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/28485708/molecular-study-of-carbapenemase-genes-in-clinical-isolates-of-enterobacteriaceae-resistant-to-carbapenems-and-determining-their-clonal-relationship-using-pulsed-field-gel-electrophoresis
#15
Fereshteh Shahcheraghi, Mohammad Mehdi Aslani, Hassan Mahmoudi, Zahra Karimitabar, Hamid Solgi, Abbas Bahador, Mohammad Yousef Alikhani
PURPOSE: Enterobacteriaceae is a large family of Gram-negative bacteria that are considered as normal gut flora. They are the most common human pathogens. The main objective of this study was to investigate the carbapenemase genes in clinical isolates of Enterobacteriaceae resistant to carbapenem antibiotics and determine their clonal relationship using pulsed-field gel electrophoresis (PFGE). METHODOLOGY: In the present study, bacteria were isolated and identified via conventional biochemical tests and API 20NE...
May 9, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28483306/pharmacodynamic-activity-of-fosfomycin-simulating-urinary-concentrations-achieved-after-a-single-3-g-oral-dose-versus-escherichia-coli-using-an-in-vitro-model
#16
George G Zhanel, Kate Parkinson, Sean Higgins, Andrew Denisuik, Heather Adam, Johann Pitout, Ayman Noreddin, James A Karlowsky
We assessed the activity of fosfomycin simulating urinary concentrations achieved after a single 3-g oral dose against Escherichia coli using an in vitro pharmacodynamic model. Eleven urinary isolates of E. coli were studied. Isolates were ESBL-producing or carbapenemase-producing. The in vitro pharmacodynamic model was inoculated with an inoculum of (~1×10(6)cfu/mL). Fosfomycin was administered to simulate maximum free (ƒ) urine (U) concentrations and a t1/2 obtained after a standard single 3-g oral dose in healthy volunteers (ƒUmax, 4000mg/L; t1/2, 6h)...
April 23, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28481953/molecular-epidemiological-survey-of-bacteremia-by-multidrug-resistant-pseudomonas-aeruginosa-the-relevance-of-intrinsic-resistance-mechanisms
#17
Raquel Cristina Cavalcanti Dantas, Rebecca Tavares E Silva, Melina Lorraine Ferreira, Iara Rossi Gonçalves, Bruna Fuga Araújo, Paola Amaral de Campos, Sabrina Royer, Deivid William da Fonseca Batistão, Paulo Pinto Gontijo-Filho, Rosineide Marques Ribas
The bacterial factors associated with bacteremia by multidrug-resistant and extensively drug-resistant P. aeruginosa, including overexpression of efflux pumps, AmpC overproduction, and loss/alteration of the OprD porin in isolates that are non-Metallo-β-Lactamase producing were analyzed in a retrospective study. Molecular analyses included strain typing by Pulsed Field Gel Electrophoresis and identification of key genes via qualitative and quantitative PCR-based assays. Previous use of carbapenems and tracheostomy was independently associated with the development of bacteremia by extensively drug-resistant and multidrug-resistant strains of P...
2017: PloS One
https://www.readbyqxmd.com/read/28479289/nationwide-surveillance-of-clinical-carbapenem-resistant-enterobacteriaceae-cre-strains-in-china
#18
Rong Zhang, Lizhang Liu, Hongwei Zhou, Edward Waichi Chan, Jiaping Li, Ying Fang, Yi Li, Kang Liao, Sheng Chen
The increasing incidence of carbapenem-resistant Enterobacteriaceae (CRE) - mediated hospital infections in China prompted a need to investigate the genetic basis of emergence of such strains. A nationwide survey was conducted in China covering a total of 1105 CRE strains collected from 25 geographical locales with results showing that acquisition of two carbapenemase genes, blaKPC-2 and blaNDM, was responsible for phenotypic resistance in 90% of the CRE strains tested (58% and 32% respectively), among which several major strain types, such as ST11 of K...
April 26, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28475792/clinical-and-molecular-epidemiology-of-carbapenem-resistant-enterobacteriaceae-among-adult-inpatients-in-singapore
#19
Kalisvar Marimuthu, Indumathi Venkatachalam, Wei Xin Khong, Tse Hsien Koh, Benjamin Pei Zhi Cherng, My Van La, Partha Pratim De, Prabha Unny Krishnan, Thean Yen Tan, Raymond Fong Kok Choon, Surinder Kaur Pada, Choong Weng Lam, Say Tat Ooi, Rama Narayana Deepak, Nares Smitasin, Eng Lee Tan, Jia Jun Lee, Asok Kurup, Barnaby Young, Nancy Tee Wen Sim, Koh Cheng Thoon, Dale Fisher, Moi Lin Ling, Brenda Ang Sze Peng, Yik-Ying Teo, Li Yang Hsu, Raymond Tzer Pin Lin, Rick Twee-Hee Ong, Jeanette Teo, Oon Tek Ng
Background: Since 2010, the incidence of carbapenem-resistant Enterobacteriaceae (CRE) has been increasing in Singapore. We analyzed the clinical and molecular epidemiology of CRE among adult inpatients in Singapore. Methods: Quarterly incidence of unique subjects (per 100000 patient-days) with positive clinical and surveillance cultures for CRE were estimated based on mandatory data submitted to the National Public Health Laboratory by public hospitals between 2010 and 2015...
May 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28470337/synergistic-activity-of-synthetic-n-terminal-peptide-of-human-lactoferrin-in-combination-with-various-antibiotics-against-carbapenem-resistant-klebsiella-pneumoniae-strains
#20
P Morici, W Florio, C Rizzato, E Ghelardi, A Tavanti, G M Rossolini, A Lupetti
The spread of multi-drug resistant (MDR) Klebsiella pneumoniae strains producing carbapenemases points to a pressing need for new antibacterial agents. To this end, the in-vitro antibacterial activity of a synthetic N-terminal peptide of human lactoferrin, further referred to as hLF1-11, was evaluated against K. pneumoniae strains harboring different carbapenemase genes (i.e. OXA-48, KPC-2, KPC-3, VIM-1), with different susceptibility to colistin and other antibiotics, alone or in combination with conventional antibiotics (gentamicin, tigecycline, rifampicin, clindamycin, and clarithromycin)...
May 3, 2017: European Journal of Clinical Microbiology & Infectious Diseases
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