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https://www.readbyqxmd.com/read/29230684/imipenem-relebactam-and-meropenem-vaborbactam-two-novel-carbapenem-%C3%AE-lactamase-inhibitor-combinations
#1
REVIEW
George G Zhanel, Courtney K Lawrence, Heather Adam, Frank Schweizer, Sheryl Zelenitsky, Michael Zhanel, Philippe R S Lagacé-Wiens, Andrew Walkty, Andrew Denisuik, Alyssa Golden, Alfred S Gin, Daryl J Hoban, Joseph P Lynch, James A Karlowsky
Relebactam (formerly known as MK-7655) is a non-β-lactam, bicyclic diazabicyclooctane, β-lactamase inhibitor that is structurally related to avibactam, differing by the addition of a piperidine ring to the 2-position carbonyl group. Vaborbactam (formerly known as RPX7009) is a non-β-lactam, cyclic, boronic acid-based, β-lactamase inhibitor. The structure of vaborbactam is unlike any other currently marketed β-lactamase inhibitor. Both inhibitors display activity against Ambler class A [including extended-spectrum β-lactamases (ESBLs), Klebsiella pneumoniae carbapenemases (KPCs)] and class C β-lactamases (AmpC)...
December 12, 2017: Drugs
https://www.readbyqxmd.com/read/29155322/digestive-tract-colonization-by-multidrug-resistant-enterobacteriaceae-in-travellers-an-update
#2
REVIEW
Etienne Ruppé, Antoine Andremont, Laurence Armand-Lefèvre
BACKGROUND: Enterobacteriaceae have become increasingly resistant, especially due to the acquisition and spread of extended-spectrum beta-lactamases (ESBLs), which confer resistance to the majority of beta-lactams. Multi-resistant Enterobacteriaceae (MRE) were first isolated in hospitals, but now they are disseminating in the community setting, mostly in low and middle income countries. Consequently, the increasing number of international travels leads to the importation of MRE from high-prevalence to low-prevalence countries...
November 16, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29067059/phenotypic-characterization-of-extended-spectrum-beta-lactamase-producing-e-coli-from-healthy-individuals-patients-sewage-sludge-cattle-chickens-and-raw-meat
#3
Rabia Saleem, Hasan Ejaz, Aizza Zafar, Sonia Younas, Ahsan Waheed Rathore
OBJECTIVE: The present study aimed to determine the frequency and antimicrobial profile of ESBL-producing isolates of E. coli in different environments. METHODS: This cross-sectional study was conducted at The Children's Hospital and The Institute of Child Health, Lahore from July to December 2015. The faecal specimens from healthy individuals, patients, sewage sludge, cattle, chickens and raw meat (n = 122) were processed for microbiological analysis using MacConkey agar supplemented with cefotaxime...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29051750/epidemiology-of-extended-spectrum-%C3%AE-lactamase-producing-e-coli-and-vancomycin-resistant-enterococci-in-the-northern-dutch-german-cross-border-region
#4
Xuewei Zhou, Silvia García-Cobos, Gijs J H M Ruijs, Greetje A Kampinga, Jan P Arends, Dirk M Borst, Lieke V Möller, Nicole D Holman, Theo A Schuurs, Lesla E Bruijnesteijn van Coppenraet, Jan F Weel, Jan H van Zeijl, Robin Köck, John W A Rossen, Alexander W Friedrich
Objectives: To reveal the prevalence and epidemiology of extended-spectrum β-lactamase (ESBL)- and/or plasmid AmpC (pAmpC)- and carbapenemase (CP) producing Enterobacteriaceae and vancomycin-resistant enterococci (VRE) across the Northern Dutch-German border region. Methods: A point-prevalence study on ESBL/pAmpC/CP producing Enterobacteriaceae and VRE was carried out in hospitalized patients in the Northern Netherlands (n = 445, 2012-2013) and Germany (n = 242, 2012). Healthy individuals from the Dutch community (n = 400, 2010-2012) were also screened...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29042339/clonal-dissemination-of-oxa-48-producing-enterobacter-cloacae-isolated-from-companion-animals-in-algeria
#5
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/29031106/new-insights-into-resistance-to-colistin-and-third-generation-cephalosporins-of-escherichia-coli-in-poultry-portugal-novel-blactx-m-166-and-blaesac-genes
#6
Vera Manageiro, Lurdes Clemente, Rafael Graça, Ivone Correia, Teresa Albuquerque, Eugénia Ferreira, Manuela Caniça
The increasing incidence of intestinal colonization with extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae and Gram negative organisms that has been observed in food animals such as poultry, cattle and pigs, are suggestive that animals, food and environment are potential sources of ESBL-producing bacteria. Hence, the aim of this study was to characterized commensal E. coli obtained from healthy broiler and turkey flocks at slaughter for the presence of penicillinases-, ESBL-, extended-spectrum AmpC (ESAC)-, plasmid-mediated quinolone resistance- and MCR-encoding genes...
October 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28992133/intestinal-carriage-of-third-generation-cephalosporin-resistant-and-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-in-healthy-us-children
#7
Shamim Islam, Rangaraj Selvarangan, Neena Kanwar, Rendie McHenry, James D Chappell, Natasha Halasa, Mary E Wikswo, Daniel C Payne, Parvin H Azimi, L Clifford McDonald, Oscar G Gomez-Duarte
Background: The epidemiology of antibiotic-resistant Enterobacteriaceae intestinal carriage in healthy US children has not been well characterized. Methods: Children between 14 days and 14 years of age were enrolled during well-child visits in Oakland, California, Kansas City, Kansas, and Nashville, Tennessee, between December 2013 and March 2015. Data on recent antibiotic use by the child and travel and hospitalization history of all members of each child's household were obtained with a risk-factor survey...
June 15, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28939488/prevalence-and-transmission-dynamics-of-escherichia-coli-st131-among-contacts-of-infected-community-and-hospitalized-patients
#8
E Torres, L López-Cerero, I Morales, M D Navarro, J Rodríguez-Baño, A Pascual
OBJECTIVES: The Escherichia coli O25b-associated ST131 clonal group was recently found to be prevalent in our area as a cause of community-acquired urinary tract infections. We evaluated the transmission dynamics and longitudinal persistence of E. coli O25b-ST131 between patients with nosocomial and community-acquired infections and their contacts. METHODS: Prevalence and transmission of O25b/pabB3/B23 isolates were compared in 38 community clusters, 30 nosocomial clusters and 50 healthy volunteers...
September 19, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28921905/antibiotic-resistant-escherichia-coli-in-southeastern-australian-pig-herds-and-implications-for-surveillance
#9
L K van Breda, O P Dhungyel, M P Ward
To investigate public health implications of antibiotics to control post-weaning scours, we surveyed 22 commercial pig herds in southeastern Australia. Fifty faecal samples per herd were collected from pre- and post-weaned piglets. Presumptive Escherichia coli isolates were confirmed by MALDI-TOF MS. Isolates (n = 325) were screened for susceptibility to 19 veterinary antibiotics using MIC broth microdilution. All 325 E. coli isolates underwent further testing against 27 antibiotics used in human medicine and were screened for ETEC adhesin and enterotoxin genes (F4 (K88), F5 (K99), F6 (987P), F18, F41, STa, STb, Stx2e and LT) by multiplex PCR...
September 17, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28919689/beta-lactamase-antimicrobial-resistance-in-klebsiella-and-enterobacter-species-isolated-from-healthy-and-diarrheic-dogs-in-andhra-pradesh-india
#10
N Mohammad Sharif, B Sreedevi, R K Chaitanya, D Sreenivasulu
AIM: The aim of this study was to characterize beta-lactamase antimicrobial resistance in Klebsiella and Enterobacter species isolated from healthy and diarrheic dogs in Andhra Pradesh. MATERIALS AND METHODS: A total of 136 rectal swabs were collected from healthy (92) and diarrheic (44) dogs, bacteriological cultured for Klebsiella and Enterobacter growth and screened for beta-lactamase antimicrobial resistance phenotypically by disc diffusion method and genotypically by polymerase chain reaction targeting blaTEM, blaSHV, blaOXA, blaCTX-M Group 1, 2, blaAmpC, blaACC, and blaMOX genes...
August 2017: Veterinary World
https://www.readbyqxmd.com/read/28918585/prevalence-and-risk-factors-for-intestinal-carriage-of-ctx-m-type-esbls-in-enterobacteriaceae-from-a-thai-community
#11
P R Niumsup, U Tansawai, A Na-Udom, D Jantapalaboon, K Assawatheptawee, A Kiddee, T Romgaew, S Lamlertthon, T R Walsh
The incidence of infections caused by antimicrobial-resistant Enterobacteriaceae in Thailand is increasing and human intestinal flora is an important reservoir for these organisms. This study was carried out to determine the intestinal carriage of bla CTX-M extended spectrum ß-lactamase-positive Enterobacteriaceae (ESBL + E) and AmpC-positive Enterobacteriaceae in a community setting in Northern Thailand, and to identify potential risk factors for carriage. A total of 307 fecal samples were collected from healthy volunteers in Phitsanulok province, and cefotaxime-resistant Enterobacteriaceae (CtxRE) were isolated using selective media...
September 16, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28898269/faecal-carriage-of-ctx-m-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-among-street-children-dwelling-in-mwanza-city-tanzania
#12
Nyambura Moremi, Heike Claus, Ulrich Vogel, Stephen E Mshana
BACKGROUND: Data on ESBL carriage of healthy people including children are scarce especially in developing countries. We analyzed the prevalence and genotypes of ESBL-producing Enterobacteriaceae (EPE) in Tanzanian street children with rare contact to healthcare facilities but significant interactions with the environment, animals and other people. METHODOLOGY/ PRINCIPLE FINDINGS: Between April and July 2015, stool samples of 107 street children, who live in urban Mwanza were analyzed for EPE...
2017: PloS One
https://www.readbyqxmd.com/read/28861076/case-of-meningitis-in-a-neonate-caused-by-an-extended-spectrum-beta-lactamase-producing-strain-of-hypervirulent-klebsiella-pneumoniae
#13
Khalit S Khaertynov, Vladimir A Anokhin, Yuri N Davidyuk, Irina V Nicolaeva, Svetlana V Khalioullina, Dina R Semyenova, Evgeny Y Alatyrev, Natalia N Skvortsova, Levon G Abrahamyan
Klebsiella pneumoniae is one of the most important infectious agents among neonates. This pathogen has a potential to develop an increased antimicrobial resistance and virulence. The classic non-virulent strain of K. pneumoniae, producing an extended-spectrum beta-lactamases (ESBL), is associated with nosocomial infection mainly in preterm neonates. Hypervirulent K. pneumoniae strains are associated with invasive infection among previously healthy ambulatory patients, and most of them exhibit antimicrobial susceptibility...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28798879/prostatic-abscess-after-stapled-hemorrhoidopexy-caused-by-esbl-extended-spectrum-beta-lactamase-producing-klebsiella-pneumoniae-an-additional-challenge-to-postoperative-sepsis
#14
Asem Saleh, Abdelnasir Kibeida, Elsaid Amin, Abdalla Khalil, Rafat Abu Shakra, Mohamed Elwakil
Postoperative septic complications of hemorrhoids surgical interventions are rare, but very serious with high mortality rate. Early diagnosis and prompt therapy are essential to save patient's life. There are a good number of articles and case reports about these septic complications. We are presenting a case report of a prostatic abscess caused by extended spectrum beta lactamase (ESBL) producing Klebsiella pneumoniae after hemorrhoidopexy. Our patient was a healthy middle aged Saudi male who has no significant medical history apart from morbid obesity and recurrent urinary tract infections...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28552831/extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolated-from-healthy-humans-in-mexico-including-subclone-st131-b2-o25-h4-h30-rx
#15
Gerardo Cortés-Cortés, Patricia Lozano-Zarain, Carmen Torres, Carla Andrea Alonso, Ana María Ríos-Torres, Miguel Castañeda, Liliana López-Pliego, Armando Navarro, Rosa Del Carmen Rocha-Gracia
OBJECTIVES: The resistance mechanisms, molecular type and plasmid content of cefotaxime-resistant Escherichia coli isolated from faecal samples of healthy volunteers in Puebla, Mexico, were characterised. METHODS AND RESULTS: Cefotaxime-resistant E. coli were recovered from 11 (18%) of 60 healthy volunteers. The isolates (one per sample) were characterised as multidrug-resistant and phenotypically extended-spectrum β-lactamase (ESBL)-producing strains. Genes encoding resistance to β-lactams (blaCTX-M-15, blaCTX-M-14a, blaCTX-M-14b, blaOXA-1, blaTEM-1b), quinolones [aac(6')-Ib-cr, qnrB19], aminoglycosides [aac(3')-II] and tetracycline [tet(A), tet(B)] were detected among the 11 ESBL-producing E...
June 2017: Journal of Global Antimicrobial Resistance
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)...
July 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28405193/the-efficacy-of-isolated-bacteriophages-from-pig-farms-against-esbl-ampc-producing-escherichia-coli-from-pig-and-turkey-farms
#17
Aneta Skaradzińska, Paulina Śliwka, Marta Kuźmińska-Bajor, Grzegorz Skaradziński, Anna Rząsa, Anika Friese, Nicole Roschanski, Jayaseelan Murugaiyan, Uwe H Roesler
Extended-spectrum β-lactamases (ESBLs) and AmpC β-lactamases are plasmid (but also chromosomally) encoded enzymes found in Enterobacteriaceae, determining resistance to a variety of important antibiotics including penicillins, cephalosporins, and monobactams. In recent decades, the prevalence of ESBL/AmpC-producing bacteria has increased rapidly across the world. Here, we evaluate the potential use of bacteriophages in terms of a reduction of antibiotic-resistant bacteria in healthy animals. The aim of our studies was to isolate bacteriophages capable of destroying ESBL/AmpC-producing Escherichia coli isolated from livestock habitats...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28359312/extended-spectrum-beta-lactamase-producing-pseudomonas-aeruginosa-in-camel-in-egypt-potential-human-hazard
#18
Mahmoud Elhariri, Dalia Hamza, Rehab Elhelw, Sohad M Dorgham
BACKGROUND: The rapid increase of extended-spectrum beta-lactamase (ESBL) producing bacteria are a potential health hazard. Development of antimicrobial resistance in animal pathogens has serious implications for human health, especially when such strains could be transmitted to human. In this study, the antimicrobial resistance due to ESBL producing Pseudomonas aeruginosa in the camel meat was investigated. METHODS: In this study meat samples from 200 healthy camels at two major abattoirs in Egypt (Cairo and Giza) were collected...
March 31, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28314728/competitive-exclusion-reduces-transmission-and-excretion-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-in-broilers
#19
Daniela Ceccarelli, Alieda van Essen-Zandbergen, Bregtje Smid, Kees T Veldman, Gert Jan Boender, Egil A J Fischer, Dik J Mevius, Jeanet A van der Goot
Extended-spectrum β-lactamases (ESBLs) and plasmid-mediated AmpC β-lactamases (pAmpC) are enzymes able to hydrolyze a large variety of β-lactam antibiotics, including third-generation cephalosporins and monobactams. Broilers and broiler meat products can be highly contaminated with ESBL- and pAmpC-producing Escherichia coli strains, also known as extended-spectrum cephalosporin (ESC)-resistant E. coli strains, and can be a source for human infections. As few data on interventions to reduce the presence of ESC-resistant E...
June 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28258755/unexpected-common-occurrence-of-transferable-extended-spectrum-cephalosporinase-producing-escherichia-coli-in-swedish-surface-waters-used-for-drinking-water-supply
#20
Maria Egervärn, Stina Englund, Marianne Ljunge, Christer Wiberg, Maria Finn, Mats Lindblad, Stefan Börjesson
The presence of Enterobacteriaceae producing extended spectrum beta-lactamases (ESBL) or transferable AmpC beta-lactamases (pAmpC) is increasingly being reported in humans, food-producing animals and food world-wide. However, the occurrence and impact of these so-called extended spectrum cephalosporinase (ESC)-producing Enterobacteriaceae in aquatic environments are poorly documented. This study investigated the occurrence, concentrations and characteristics of ESC-producing E. coli (ESC-Ec) in samples of surface water collected at five Swedish water treatment plants that normally have relatively high prevalence and concentration of E...
February 28, 2017: Science of the Total Environment
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