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https://www.readbyqxmd.com/read/28339845/expanded-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolated-from-chickens-with-colibacillosis-in-egypt
#1
D A El-Shazly, S A Nasef, F F Mahmoud, Daniel Jonas
Throughout the world, expanded spectrum β-lactamases (ESBL) are increasing among clinical isolates of Enterobacteriaceae, both in humans and animals. Unfortunately, there is a paucity of data on ESBL or Ampicillin class C β-lactamase (AmpC) in Egypt, although antimicrobial consumption is high in this developing country. This study aims to characterize the resistance mechanisms to expanded spectrum cephalosporins among resistant veterinary Escherichia coli isolates in Egypt. We investigated 50 clinical multi-resistant E...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28328967/phenotypic-and-molecular-characterization-of-antimicrobial-resistance-in-enterobacter-spp-isolates-from-companion-animals-in-japan
#2
Kazuki Harada, Takae Shimizu, Yujiro Mukai, Ken Kuwajima, Tomomi Sato, Akari Kajino, Masaru Usui, Yutaka Tamura, Yui Kimura, Tadashi Miyamoto, Yuzo Tsuyuki, Asami Ohki, Yasushi Kataoka
The emergence of antimicrobial resistance among Enterobacter spp., including resistance to extended-spectrum cephalosporins (ESC), is of great concern in both human and veterinary medicine. In this study, we investigated the prevalence of antimicrobial resistance among 60 isolates of Enterobacter spp., including E. cloacae (n = 44), E. aerogenes (n = 10), and E. asburiae (n = 6), from clinical specimens of dogs and cats from 15 prefectures in Japan. Furthermore, we characterized the resistance mechanisms harbored by these isolates, including extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance (PMQR); and assessed the genetic relatedness of ESC-resistant Enterobacter spp...
2017: PloS One
https://www.readbyqxmd.com/read/28323856/risk-factors-for-esbl-producing-escherichia-coli-on-pig-farms-a-longitudinal-study-in-the-context-of-reduced-use-of-antimicrobials
#3
Wietske Dohmen, Alejandro Dorado-García, Marc J M Bonten, Jaap A Wagenaar, Dik Mevius, Dick J J Heederik
The presence of extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-E. coli) in food animals is a public health concern. This study aimed to determine prevalence of ESBL-E. coli on pig farms and to assess the effect of reducing veterinary antimicrobial use (AMU) and farm management practices on ESBL-E. coli occurrence on pig farms. During 2011-2013, 36 Dutch conventional pig farms participated in a longitudinal study (4 sampling times in 18 months). Rectal swabs were taken from 60 pigs per farm and pooled per 6 pigs within the same age category...
2017: PloS One
https://www.readbyqxmd.com/read/28314728/competitive-exclusion-reduces-transmission-and-excretion-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-in-broilers
#4
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 3(rd) generation cephalosporins and monobactams. Broilers and broiler meat products can be highly contaminated with ESBL and pAmpC-producing Escherichia coli, also known as extended-spectrum cephalosporins (ESC)-resistant E. coli, and can be a source for human infections. As few data are available on interventions to reduce ESC-resistant E...
March 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28281197/wild-birds-and-urban-pigeons-as-reservoirs-for-diarrheagenic-escherichia-coli-with-zoonotic-potential
#5
Clarissa A Borges, Marita V Cardozo, Livia G Beraldo, Elisabete S Oliveira, Renato P Maluta, Kaline B Barboza, Karin Werther, Fernando A Ávila
In order to describe the role of wild birds and pigeons in the transmission of shiga toxigenic Escherichia coli (STEC) and enteropathogenic Escherichia coli (EPEC) to humans and other animals, samples were collected from cloacae and oropharynx of free-living wild birds and free-living pigeons. Two STEC (0.8%) and five EPEC strains (2.0%) were isolated from wild birds and four EPEC strains (2.0%) were recovered from pigeons. Serogroups, sequence types (STs) and virulence genes, such as saa, iha, lpfA O113, ehxA, espA, nleB and nleE, detected in this study had already been implicated in human and animal diseases...
March 9, 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28273621/air-exposure-as-a-possible-route-for-esbl-in-pig-farmers
#6
Wietske Dohmen, Heike Schmitt, Marc Bonten, Dick Heederik
Livestock can carry extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae, with blaCTX-M-1 being most prevalent. ESBL carriage in farmers is associated with ESBL carriage in animals, with direct animal-human contact considered as the dominant route of transmission. However, inhalation of stable air might represent another route of transmission. We, therefore, quantified presence of blaCTX-M group 1 genes (CTX-M-gr1) in dust and the association with CTX-M-gr1 carriage in pig farmers, family members and employees...
May 2017: Environmental Research
https://www.readbyqxmd.com/read/28263896/prevalence-of-the-mcr-1-colistin-resistance-gene-in-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-from-human-faecal-samples-collected-in-2012-in-rural-villages-in-shandong-province-china
#7
Zhenwang Bi, Björn Berglund, Qiang Sun, Maud Nilsson, Baoli Chen, Maria Tärnberg, Lilu Ding, Cecilia Stålsby Lundborg, Zhenqiang Bi, Göran Tomson, Jingjing Yao, Zhanying Gu, Xiao Yin, Zengqiang Kou, Lennart E Nilsson
Since its initial discovery in China in 2015, the plasmid-mediated colistin resistance gene mcr-1 has been reported in Escherichia coli isolated from clinical samples, animals and meat worldwide. In this study, 706 extended-spectrum β-lactamase (ESBL)-producing E. coli from 411 persons were detected in a collection of faecal samples from 1000 rural residents in three counties in Shandong Province, China. These isolates were screened for mcr-1 and phenotypic colistin resistance. The gene was found in 3.5% of the isolates (from 4...
March 2, 2017: International Journal of Antimicrobial Agents
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
#8
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
https://www.readbyqxmd.com/read/28249582/characteristics-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolated-from-fecal-samples-of-piglets-with-diarrhea-in-central-and-southern-taiwan-in-2015
#9
Wan-Chen Lee, Kuang-Sheng Yeh
BACKGROUND: The production of extended-spectrum β-lactamases (ESBLs) confer resistance to the commonly used beta-lactam antimicrobials and ESBL-producing bacteria render treatment difficulty in human and veterinary medicine. ESBL-producing bacteria have emerged in livestock in recent years, which may raise concerns regarding possible transfer of such bacteria through the food chain. The swine industry is important in Taiwan, but investigations regarding the status of ESBL in swine are limited...
March 1, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28221927/characterization-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolates-from-pigs-and-farm-workers
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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