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https://www.readbyqxmd.com/read/28221927/characterization-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolates-from-pigs-and-farm-workers
#1
Hongna Zhang, Zhenzhen Zhai, Qing Li, Linghong Liu, Shuyuan Guo, Qimeng Li, Lingling Yang, Chaoqun Ye, Weishan Chang, Jing Zhai
Food-producing animals can serve as reservoirs for extended-spectrum β-lactamase (ESBL)-producing Escherichia coli . The present study aimed to characterize and compare ESBL-carrying E. coli isolates from both pigs and farm workers. Rectal swabs were obtained from 60 pigs on four pig-fattening farms (15 samples per farm), and rectal swabs were taken from 40 farm workers on these farms (10 samples per farm). ESBL-carrying E. coli isolates from the workers and pigs were characterized by ESBL genotype, antibiotic susceptibility, enterobacterial repetitive intergenic consensus type, and multilocus sequence type...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28220620/prevalence-of-ampc-and-extended-spectrum-%C3%AE-lactamase-harbouring-enterobacteriaceae-in-faecal-flora-of-a-healthy-domestic-canine-population
#2
D A Mathys, D F Mollenkopf, C A Bremer, J B Daniels, T E Wittum
In order to estimate the prevalence of AmpC- and ESBL β-lactamase-producing Enterobacteriaceae in the faecal flora of a healthy domestic canine population, faecal samples were obtained from healthy dogs receiving routine parasitology screening at the Ohio State University Veterinary Medical Center, between January 2013 and April 2013. Samples were screened for the presence of AmpC and ESBL β-lactamase phenotypes, and the clinically important genotypes, blaCMY and blaCTX-M , were confirmed via conventional PCR...
February 20, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28208218/antibiotic-resistance-in-escherichia-coli-in-husbandry-animals-the-african-perspective
#3
REVIEW
Carla Andrea Alonso, Myriam Zarazaga, Rym Ben Sallem, Ahlem Jouini, Karim Ben Slama, Carmen Torres
In the last years different surveillances have been published in Africa, especially in Northern countries, regarding antimicrobial resistance among husbandry animals. Information is still scarce, but the available data shows a worrying picture. Although the highest resistance rates have been described against tetracycline, penicillins and sulphonamides, prevalence of plasmid mediated quinolone resistance genes and extended-spectrum β-lactamase (ESBL) are being increasingly reported. Among ESBLs, the CTX-M-1 group was dominant in most African surveys, being CTX-M-15 the main variant both in animals and humans, except in Tunisia where CTX-M-1 was more frequently detected among E...
February 16, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28177803/a-survey-of-the-antimicrobial-susceptibility-of-escherichia-coli-isolated-from-sable-island-horses
#4
Mary E Timonin, Jocelyn Poissant, Philip D McLoughlin, Cherise E Hedlin, Joseph E Rubin
The feral horses of Sable Island are a geographically isolated population located ~160 km off the east coast of Nova Scotia, Canada. Because these horses have no contact with domestic animals, minimal contact with people and have never received antimicrobials, they offer a unique opportunity to study the dissemination of antimicrobial resistance in unmanaged populations. As part of an ongoing multi-disciplinary and individual-based monitoring program, we collected feces from 508 geolocalized horses (92 % of the total population) between July and September 2014...
November 7, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28154560/detection-of-sgi1-pgi1-elements-and-resistance-to-extended-spectrum-cephalosporins-in-proteae-of-animal-origin-in-france
#5
Eliette Schultz, Axel Cloeckaert, Benoît Doublet, Jean-Yves Madec, Marisa Haenni
Proteae, and especially Proteus mirabilis, are often the cause of urinary tract infections (UTIs) in humans. They were reported as carriers of extended-spectrum β-lactamase (ESBL) genes, and recently of carbapenemases, mostly carried by the Salmonella genomic island 1 (SGI1) and Proteus genomic island 1 (PGI1). Proteae have also lately become an increasing cause of UTIs in companion animals, but antimicrobial susceptibility data in animals are still scarce. Here, we report the characterization of 468 clinical epidemiologically unrelated Proteae strains from animals collected between 2013 and 2015 in France...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28143782/esbl-ampc-and-carbapenemase-producing-enterobacteriaceae-in-animals-a-threat-for-humans
#6
REVIEW
Jean-Yves Madec, Marisa Haenni, Patrice Nordmann, Laurent Poirel
There has been a great and long-term concern that ESBL/AmpC- and carbapenemase-producing Enterobacteriaceae occurring in animals may constitute a public health issue. A large number of factors with complex interrelations contribute to the spread of those bacteria among animals and humans. ESBL/AmpC- or carbapenemase-encoding genes are most often located onto mobile genetic elements favouring their dissemination. Some shared reservoirs of ESBL/AmpC or carbapenemase genes, plasmids or clones have been identified and suggest cross-transmissions...
January 28, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28125687/high-heterogeneity-of-escherichia-coli-sequence-types-harbouring-esbl-ampc-genes-on-inci1-plasmids-in-the-colombian-poultry-chain
#7
Luis Ricardo Castellanos, Pilar Donado-Godoy, Maribel León, Viviana Clavijo, Alejandra Arevalo, Johan F Bernal, Arjen J Timmerman, Dik J Mevius, Jaap A Wagenaar, Joost Hordijk
BACKGROUND: Escherichia coli producing ESBL/AmpC enzymes are unwanted in animal production chains as they may pose a risk to human and animal health. Molecular characterization of plasmids and strains carrying genes that encode these enzymes is essential to understand their local and global spread. OBJECTIVES: To investigate the diversity of genes, plasmids and strains in ESBL/AmpC-producing E. coli from the Colombian poultry chain isolated within the Colombian Integrated Program for Antimicrobial Resistance Surveillance (Coipars)...
2017: PloS One
https://www.readbyqxmd.com/read/28073961/genetic-characterization-of-mcr-1-bearing-plasmids-to-depict-molecular-mechanisms-underlying-dissemination-of-the-colistin-resistance-determinant
#8
Ruichao Li, Miaomiao Xie, Jinfei Zhang, Zhiqiang Yang, Lizhang Liu, Xiaobo Liu, Zhiwei Zheng, Edward Wai-Chi Chan, Sheng Chen
OBJECTIVES: To analyse and compare mcr-1-bearing plasmids from animal Escherichia coli isolates, and to investigate potential mechanisms underlying dissemination of mcr-1. METHODS: Ninety-seven ESBL-producing E. coli strains isolated from pig farms in China were screened for the mcr-1 gene. Fifteen mcr-1-positive strains were subjected to molecular characterization and bioinformatic analysis of the mcr-1-bearing plasmids that they harboured. RESULTS: Three major types of mcr-1-bearing plasmids were recovered: IncX4 (∼33 kb), IncI2 (∼60 kb) and IncHI2 (∼216-280 kb), among which the IncX4 and IncI2 plasmids were found to harbour the mcr-1 gene only, whereas multiple resistance elements including blaCTX-M, blaCMY, blaTEM, fosA, qnrS, floR and oqxAB were detected, in various combinations, alongside mcr-1 in the IncHI2 plasmids...
September 28, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28056081/comparative-exposure-assessment-of-esbl-producing-escherichia-coli-through-meat-consumption
#9
Eric G Evers, Annemarie Pielaat, Joost H Smid, Engeline van Duijkeren, Francy B C Vennemann, Lucas M Wijnands, Jurgen E Chardon
The presence of extended-spectrum β-lactamase (ESBL) and plasmidic AmpC (pAmpC) producing Escherichia coli (EEC) in food animals, especially broilers, has become a major public health concern. The aim of the present study was to quantify the EEC exposure of humans in The Netherlands through the consumption of meat from different food animals. Calculations were done with a simplified Quantitative Microbiological Risk Assessment (QMRA) model. The model took the effect of pre-retail processing, storage at the consumers home and preparation in the kitchen (cross-contamination and heating) on EEC numbers on/in the raw meat products into account...
2017: PloS One
https://www.readbyqxmd.com/read/28049493/presence-of-foodborne-pathogens-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-and-methicillin-resistant-staphylococcus-aureus-in-slaughtered-reindeer-in-northern-finland-and-norway
#10
Sauli Laaksonen, Antti Oksanen, Jérôme Julmi, Claudio Zweifel, Maria Fredriksson-Ahomaa, Roger Stephan
BACKGROUND: Various food-producing animals were recognized in recent years as healthy carriers of bacterial pathogens causing human illness. In northern Fennoscandia, the husbandry of semi-domesticated reindeer (Rangifer tarandus tarandus) is a traditional livelihood and meat is the main product. This study determined the presence of selected foodborne pathogens, methicillin-resistant Staphylococcus aureus (MRSA), and extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in healthy semi-domesticated reindeer at slaughter in northern Finland and Norway...
January 3, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28036049/antimicrobial-resistant-enteropathogenic-escherichia-coli-and-salmonella-spp-in-houseflies-infesting-fish-in-food-markets-in-zambia
#11
Mwansa M Songe, Bernard M Hang'ombe, Theodore J D Knight-Jones, Delia Grace
Diarrhea is one of the most common diseases and is a leading cause of death in developing countries. This is often caused by contaminated food. Poor food hygiene standards are exacerbated by the presence of flies which can transmit a variety of infectious microorganisms, particularly through animal source foods. This fact becomes especially important in developing countries like Zambia, where fish is a highly valued source of protein. Our interest in this study was to identify if the flies that beset food markets in Zambia carry important pathogenic bacteria on their bodies, and subsequently if these bacteria carry resistance genes to commonly used antibiotics, which would indicate problems in eradicating these pathogens...
December 28, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27999066/public-health-risk-of-antimicrobial-resistance-transfer-from-companion-animals
#12
Constança Pomba, Merja Rantala, Christina Greko, Keith Edward Baptiste, Boudewijn Catry, Engeline van Duijkeren, Ana Mateus, Miguel A Moreno, Satu Pyörälä, Modestas Ružauskas, Pascal Sanders, Christopher Teale, E John Threlfall, Zoltan Kunsagi, Jordi Torren-Edo, Helen Jukes, Karolina Törneke
Antimicrobials are important tools for the therapy of infectious bacterial diseases in companion animals. Loss of efficacy of antimicrobial substances can seriously compromise animal health and welfare. A need for the development of new antimicrobials for the therapy of multiresistant infections, particularly those caused by Gram-negative bacteria, has been acknowledged in human medicine and a future corresponding need in veterinary medicine is expected. A unique aspect related to antimicrobial resistance and risk of resistance transfer in companion animals is their close contact with humans...
December 20, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27999050/complete-genetic-analysis-of-plasmids-carrying-mcr-1-and-other-resistance-genes-in-an-escherichia-coli-isolate-of-animal-origin
#13
Ruichao Li, Miaomiao Xie, Jingzhang Lv, Edward Wai-Chi Chan, Sheng Chen
OBJECTIVES: To investigate the genetic features of three plasmids recovered from an MCR-1 and ESBL-producing Escherichia coli strain, HYEC7, and characterize the transmission mechanism of mcr-1 METHODS: The genetic profiles of three plasmids were determined by PCR, S1-PFGE, Southern hybridization and WGS analysis. The ability of the mcr-1-bearing plasmid to undergo conjugation was also assessed. The mcr-1-bearing transposon Tn6330 was characterized by PCR and DNA sequencing. RESULTS: Complete sequences of three plasmids were obtained...
December 20, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27984780/high-rates-of-ctx-m-15-producing-escherichia-coli-and-klebsiella-pneumoniae-in-wild-boars-and-barbary-macaques-in-algeria
#14
Taous Bachiri, Sofiane Bakour, Rabia Ladjouzi, Leangapichart Thongpan, Jean Marc Rolain, Abdelaziz Touati
OBJECTIVES: The present study aimed to screen for the presence of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in wild boars and Barbary macaques in Béjaïa and Jijel, Algeria. METHODS: A total of 216 faecal samples collected between September 2014 and August 2015 were cultured on MacConkey agar supplemented with 1μg/mL ceftazidime. Isolates were identified by matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF/MS)...
December 10, 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27973988/characterisation-of-extended-spectrum-%C3%AE-lactamase-and-ampc-%C3%AE-lactamase-producing-enterobacteriaceae-isolated-from-companion-animals-in-new-zealand
#15
A Karkaba, A Grinberg, J Benschop, E Pleydell
AIMS: To assess the occurrence of, and characterise, extended-spectrum β-lactamase (ESBL) and AmpC β-lactamase (AmpC)-producing Enterobacteriaceae isolated by veterinary diagnostic laboratories from infection sites in companion animals in New Zealand. METHODS: Selected Enterobacteriaceae isolates were submitted by seven New Zealand veterinary diagnostic laboratories. They were isolated from infection sites in companion animals between June 2012 and June 2013, and were resistant to amoxicillin-clavulanic acid, fluoroquinolones, or any combination of two or more antimicrobials...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27942365/isolation-antimicrobial-susceptibility-profile-and-detection-of-sul1-blatem-and-blashv-in-amoxicillin-clavulanate-resistant-bacteria-isolated-from-retail-sausages-in-kampar-malaysia
#16
Lih-Shin Tew, Li-Yen She, Choy-Hoong Chew
BACKGROUND: Due to the overuse of antibiotics in livestock as a growth-promoting agent, the emergence of multi-antibiotic resistant bacteria is becoming a concern. OBJECTIVES: In this study, we aimed to detect the presence and discover the molecular determinants of foodborne bacteria in retail sausages resistant towards the antibacterial agent amoxicillin-clavulanate. METHODS: Two grams of sausages were chopped into small pieces and transferred into sterile Luria-Bertani (LB) enrichment broths overnight before they were plated on MacConkey agar petri dishes...
October 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27927087/multidrug-resistant-enterobacteriaceae-in-new-zealand-a-current-perspective
#17
REVIEW
L J Toombs-Ruane, J Benschop, S Burgess, P Priest, D R Murdoch, N P French
In this article we review mechanisms and potential transmission pathways of multidrug resistance in Enterobacteriaceae, with an emphasis on extended-spectrum β-lactamase (ESBL)-production. This provides background to better understand challenges presented by this important group of antimicrobial resistant bacteria, and inform measures aimed at prevention and control of antimicrobial resistance in general. Humans and animals interact at various levels; household pets cohabit with humans, and other animals interact with people through direct contact, as well as through the food chain and the environment...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27899921/high-prevalence-of-%C3%AE-lactamase-and-plasmid-mediated-quinolone-resistance-genes-in-extended-spectrum-cephalosporin-resistant-escherichia-coli-from-dogs-in-shaanxi-china
#18
Xiaoqiang Liu, Haixia Liu, Yinqian Li, Caiju Hao
Objective: The aim of this study was to investigate the occurrence and molecular characterization of extended-spectrum β-lactamases (ESBL), plasmid-mediated AmpC β-lactamase (pAmpC) and carbapenemases as well as plasmid-mediated quinolone-resistant (PMQR) among extended-spectrum cephalosporin-resistant (ESC-R) Escherichia coli from dogs in Shaanxi province in China. Methods: A total of 40 ESC-R Escherichia coli selected from 165 Extraintestinal pathogenic E. coli (ExPEC) isolated from dogs were screened and characterized for the genes encoding for the ESBLs, pAmpC, carbapenemases and PMQR genes by PCR and sequencing...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27890366/in%C3%A2-vitro-biofilm-formation-in-esbl-producing-escherichia-coli-isolates-from-cage-birds
#19
Ebru Sebnem Yılmaz, Nur Ceyhan Güvensen
OBJECTIVE: To determine biofilm and hydrophobicity formation ratios in extended spectrum beta lactamases (ESBL) synthesizing Escherichia coli isolates which were isolated from feces samples of 150 cage bird species randomly taken from pet shops in Hatay province, Turkey. METHODS: In vitro biofilm production of 4 ESBL positive isolates were performed by Congo Red Agar (CRA), Standard Tube (ST) and Microtitre Plate (MP) methods while their hydrophobicity were examined by bacterial adhesion to hydrocarbon (BATH) test...
November 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27865491/prevalence-and-risk-factors-for-extended-spectrum-%C3%AE-lactamase-or-ampc-producing-escherichia-coli-in-organic-dairy-herds-in-the-netherlands
#20
I M G A Santman-Berends, M A Gonggrijp, J J Hage, A E Heuvelink, A Velthuis, T J G M Lam, G van Schaik
Extended-spectrum β-lactamase and AmpC-producing Escherichia coli (ESBL/AmpC) are an emerging problem and are hypothesized to be associated with antimicrobial use (AMU), and more specifically with the use of third- and fourth-generation cephalosporins. Whether ESBL/AmpC also occur in organic dairy herds, which have restricted AMU, is not known. Additionally, it is unknown whether, in addition to restricted AMU, other factors in organic herd management are associated with ESBL/AmpC herd status. The aim of this study was to estimate the prevalence of ESBL/AmpC in organic dairy herds in the Netherlands...
January 2017: Journal of Dairy Science
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