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https://www.readbyqxmd.com/read/28802274/horizontal-dissemination-of-antimicrobial-resistance-determinants-in-multiple-salmonella-serotypes-following-isolation-from-the-environment-of-commercial-swine-operations-after-manure-application
#1
Suchawan Pornsukarom, Siddhartha Thakur
The aim of this study was to characterize the plasmids carrying antimicrobial resistance (AMR) determinants in multiple Salmonella serotypes recovered from the commercial swine farms environment after manure application on land. Manure and soil samples were collected on day0 before and after manure application on six farms in North Carolina and sequential soil samples were recollected on day7, 14, and 21 from the same plots. All environmental samples were processed for Salmonella and their plasmid contents were further characterized...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28799283/selection-and-transfer-of-an-inci1-tet-a-plasmid-of-escherichia-coli-in-an-ex-vivo-model-of-the-porcine-cecum-at-doxycycline-concentrations-caused-by-cross-contaminated-feed
#2
Laura E J Peeters, Thijs De Mulder, Els Van Coillie, Judith Huygens, Annemieke Smet, Els Daeseleire, Jeroen Dewulf, Hein Imberechts, Patrick Butaye, Freddy Haesebrouck, Siska Croubels, Marc Heyndrickx, Geertrui Rasschaert
AIMS: The aim of this study was to investigate the effect of subtherapeutic intestinal doxycycline (DOX) concentrations (4 and 1 mg l(-1) ), caused by cross-contamination of feed, on the enrichment of a DOX resistant commensal E. coli and it's resistance plasmid in an ex vivo model of the porcine cecum. METHODS AND RESULTS: A DOX resistant, tet(A) carrying, porcine commensal E. coli strain (EC 682) was cultivated for 6 days in the porcine cecum model under different conditions (0, 1 and 4 mg l(-1) DOX)...
August 11, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28728058/high-prevalence-of-esbls-in-retail-chicken-meat-despite-reduced-use-of-antimicrobials-in-chicken-production-france
#3
Tiago Casella, Mara Correa Lelles Nogueira, Estelle Saras, Marisa Haenni, Jean-Yves Madec
Extended-spectrum cephalosporins (ESCs) are critically important antibiotics for humans and their use in animals poses a potential threat for public health. Chicken represents an increasing part of the human diet and has also been regarded as a source of ESC-resistant Enterobacteriaceae because of the worldwide off-label use of ceftiofur, a broad-spectrum cephalosporin. Thus, numerous studies pointed out chicken as a reservoir of ESBL/pAmpC genes, plasmids and/or clones at risk for humans. In France, late 2011, strong political pressure led to a drastic reduction of ceftiofur use and all other antibiotics in chicken production...
July 10, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28689895/plasmid-mediated-transfer-of-ctx-m-55-extended-spectrum-beta-lactamase-among-different-strains-of-salmonella-and-shigella-spp-in-the-republic-of-korea
#4
Jin Seok Kim, Soojin Kim, Jungsun Park, Eunkyung Shin, Young-Sun Yun, Deog-Yong Lee, Hyo-Sun Kwak, Won Keun Seong, Gyung Tae Chung, Junyoung Kim
We screened 10 CTX-M-55-producing Shigella and Salmonella isolates from a national surveillance in Korea. The blaCTX-M-55 was located on the IncI1 (n=5), IncA/C (n=4) and IncZ (n=1) plasmids, downstream of ISEcp1, IS26-ISEcp1 and ISEcp1-IS5 sequences, respectively. These results indicate that CTX-M-55 has disseminated to other bacteria by lateral plasmid transfer.
March 30, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28683526/characteristics-of-transmissible-ctx-m-and-cmy-type-%C3%AE-lactamase-producing-escherichia-coli-isolates-collected-from-pig-and-chicken-farms-in-south-korea
#5
Seung Won Shin, Myunghwan Jung, Ho Geun Won, Kuastros Mekonnen Belaynehe, In Joong Yoon, Han Sang Yoo
The rapid dissemination Extended-spectrum β-lactamase (ESBL)-producing Escherichia coli has significantly contributed to hazard of public health globally. A total of 281 E. coli strains recovered from pigs and chickens between 2009 and 2015 in South Korea were analyzed for ESBL-production. ESBL phenotypes were recognized in 14 E. coli isolates; ten and three ESBL-producing isolates carried only blaCTX-M and blaCMY genes, respectively, and one isolate harbored both genes. The predominant CTX-M- and CMY-types were CTX-M-15 (n=8) and CMY-2 (n=3)...
July 7, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28674313/first-detection-of-escherichia-coli-harboring-mcr-1-gene-from-retail-domestic-chicken-meat-in-japan
#6
Yusuke Ohsaki, Wataru Hayashi, Satomi Saito, Shunsuke Osaka, Yui Taniguchi, Shota Koide, Kumiko Kawamura, Yukiko Nagano, Yoshichika Arakawa, Noriyuki Nagano
Global spread of plasmid-mediated colistin resistance gene, mcr-1 poses a public health concern because colistin is the last-line-of-defense against severe infections due to multidrug-resistant Gram- negative bacteria. In Japan, a few studies have reported the prevalence of mcr-1 among food animal-derived Escherichia coli isolates, but the epidemiology of mcr-1 from retail meats is not well known. We report here the first detection of mcr-1 from retail chicken meats. A total of 70 ESBL-producing E. coli isolates recovered from retail chicken meats collected between August 2015 and June 2016 were screened for mcr-1, which resulted in positive for one isolate of CTX-M-1 producing E...
July 1, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28674050/plasmids-of-diverse-inc-groups-disseminate-the-fosfomycin-resistance-gene-fosa3-among-escherichia-coli-from-pigs-chickens-and-dairy-cows-in-northeast-china
#7
Xiu-Mei Wang, Zhimin Dong, Stefan Schwarz, Yao Zhu, Xin Hua, Yanhe Zhang, Siguo Liu, Wan-Jiang Zhang
Thirty-nine fosfomycin-resistant E. coli isolates carrying fosA3 were obtained from pigs, chickens, dairy cows and staff in four Northeastern provinces of China during 06/2015-04/2016. The fosA3 was co-located with blaCTX-M genes on conjugative plasmids of the incompatibility groups IncN (n=12), IncN-F33:A-:B- (n=2), IncF33:A-:B- (n=14), IncF14:A-:B- (n=2), and IncI1/ST136 (n=9). Four different genetic contexts of fosA3 were detected among the 39 E. coli isolates. Three potential epidemic plasmids circulated among E...
July 3, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28668729/characterization-of-antibiotic-resistant-and-pathogenic-escherichia-coli-in-irrigation-water-and-vegetables-in-household-farms
#8
Susana Araújo, Isabel A T Silva, Marta Tacão, Carla Patinha, Artur Alves, Isabel Henriques
This study aimed to characterize Escherichia coli present in irrigation water and vegetables from 16 household farms. Isolates were obtained from 50% of water (n=210 isolates) and 38% of vegetable samples (n=239). Phylogroups B1 (56% of isolates) and A (22%) were the most prevalent both in water and vegetables. Diarrheagenic strains were detected in vegetables. Irrespective of the source (i.e. water or vegetables), the most common antibiotic resistance was against streptomycin (89% resistant isolates) and tetracycline (24%)...
June 22, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28411217/transfer-potential-of-plasmids-conferring-extended-spectrum-cephalosporin-resistance-in-escherichia-coli-from-poultry
#9
Solveig Sølverød Mo, Marianne Sunde, Hanna Karin Ilag, Solveig Langsrud, Even Heir
Escherichia coli strains resistant to extended-spectrum cephalosporins (ESC) are widely distributed in Norwegian broiler production, and the majority harbor transferable IncK or IncI1 plasmids carrying blaCMY-2 Persistent occurrence in broiler farms may occur through the survival of ESC-resistant E. coli strains in the farm environment, or by transfer and maintenance of resistance plasmids within a population of environmental bacteria with high survival abilities. The aim of this study was to determine the transferability of two successful blaCMY-2-carrying plasmids belonging to the incompatibility groups IncK and IncI1 into E...
June 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28396551/specific-blactx-m-8-inci1-plasmid-transfer-among-genetically-diverse-escherichia-coli-isolates-between-humans-and-chickens
#10
Chihiro Norizuki, Jun-Ichi Wachino, Masahiro Suzuki, Kumiko Kawamura, Noriyuki Nagano, Kouji Kimura, Yoshichika Arakawa
We investigated the genetic backbones of 14 blaCTX-M-8-positive Escherichia coli isolates recovered from human stool samples and chicken meat. All isolates carried IncI1 plasmids with blaCTX-M-8 (blaCTX-M-8/IncI1), and most (9/14) belonged to a specific genetic lineage, namely, plasmid sequence type 113 (pST113). The genetic contexts of the nine blaCTX-M-8/IncI1 pST113 plasmids were similar, regardless of the source. These results suggest the probable local transfer of blaCTX-M-8/IncI1 between humans and chickens with genetically diverse E...
June 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28380311/spread-of-ctx-type-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolates-of-epidemic-clone-b2-o25-st131-among-dogs-and-cats-in-japan
#11
Kumiko Kawamura, Tae Sugawara, Nao Matsuo, Kengo Hayashi, Chihiro Norizuki, Kiyoko Tamai, Takaaki Kondo, Yoshichika Arakawa
This study was performed to investigate the carriage rates of CTX-M-type extended-spectrum β-lactamase (ESBL)-producing Escherichia coli among ill companion animals in Japan. Among the 178 nonrepetitive E. coli isolates, including 131 from dogs and 47 from cats, collected between September and November 2015, 42 (23.6%) isolates from 29 dogs and 13 cats were identified as ESBL producers. The antimicrobial susceptibility, O serotype, phylogenetic group, β-lactamase genotype, plasmid replicon type, and sequence type (ST) of each isolate were analyzed...
April 5, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28379732/prevalence-of-plasmid-mediated-fosfomycin-resistance-gene-fosa3-among-ctx-m-producing-escherichia-coli-isolates-from-chickens-in-china
#12
Wei Jiang, Shuai Men, Linghan Kong, Suzhen Ma, Yongqiang Yang, Yongxiang Wang, Qiwu Yuan, Guangyang Cheng, Wencheng Zou, Hongning Wang
The aim of this study was to investigate the prevalence of fosfomycin resistance gene fosA3 and characterize plasmids harboring fosA3 among CTX-M-producing Escherichia coli from chickens in China. A total of 234 CTX-M-producing E. coli isolates collected from chickens from 2014 to 2016 were screened for the presence of plasmid-mediated fosfomycin resistance genes (fosA, fosA3, and fosC2). Clonal relatedness of fosA3-positive isolates was determined by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST)...
April 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28364731/clonal-diversity-of-extended-spectrum-beta-lactamase-producing-escherichia-coli-isolates-in-fecal-samples-of-wild-animals
#13
Filipe Cristóvão, Carla Andrea Alonso, Gilberto Igrejas, Margarida Sousa, Vanessa Silva, José Eduardo Pereira, Carmen Lozano, Gerardo Cortés-Cortés, Carmen Torres, Patrícia Poeta
The clonal diversity of extended-spectrum-β-lactamase (ESBL)-producing Escherichia coli isolates from nine different species of wild animals from distinct regions of Portugal and Spain and their content in replicon plasmids were analyzed. Among the initial 53 ESBL-producing E. coli isolates that were studied (from previous studies), 28 were selected, corresponding to different animal origins with distinct ESBL types and pulsed-field gel electrophoresis (PFGE) patterns. These 28 isolates produced different ESBLs ascribed to the following families: CTX-M, SHV and TEM...
March 1, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28338012/prevalence-of-st1193-clone-and-inci1-st16-plasmid-in-e-coli-isolates-carrying-blactx-m-55-gene-from-urinary-tract-infections-patients-in-china
#14
Liang Xia, Yang Liu, Shu Xia, Timothy Kudinha, Shu-Nian Xiao, Nan-Shan Zhong, Guo-Sheng Ren, Chao Zhuo
To study molecular epidemiology of CTX-M-55-carrying Escherichia coli isolates from urinary tract infections (UTIs) in China. 111 blaCTX-M-55-positive E.coli isolates from UTIs patients in China were studied. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) were used to analyze the homologies among the strains. Conjugation experiments, S1nuclease PFGE and PCR analysis were performed to characterize plasmids harboring blaCTX-M-55 and their genetic environment. 111 isolates were clustered into 86 individual pulsotypes and three clusters by PFGE...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28333298/occurrence-and-molecular-characteristics-of-esbl-ampc-producing-escherichia-coli-in-faecal-samples-from-horses-in-an-equine-clinic
#15
Ilias Apostolakos, Eelco Franz, Angela H A M van Hoek, Alice Florijn, Christiaan Veenman, Marianne M Sloet-van Oldruitenborgh-Oosterbaan, Cindy Dierikx, Engeline van Duijkeren
Objectives: To investigate the occurrence and characteristics of ESBL/AmpC-producing Escherichia coli in faecal samples from horses at one equine clinic in the Netherlands. Methods: A total of 91 horses, including residents and patients, were sampled. ESBL/AmpC-producing E. coli were identified by a combination disc diffusion test. Phylogenetic groups and MLST were determined. ESBL/AmpC genes were analysed using PCR and sequencing. Plasmids were characterized by transformation and PCR-based replicon typing...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333184/analysis-of-blashv-12-carrying-escherichia-coli-clones-and-plasmids-from-human-animal-and-food-sources
#16
Carla Andrea Alonso, Geovana Brenner Michael, Jun Li, Sergio Somalo, Carmen Simón, Yang Wang, Heike Kaspar, Kristina Kadlec, Carmen Torres, Stefan Schwarz
Objectives: This study aimed at characterizing 23 Escherichia coli isolates from various sources and their respective bla SHV-12 -carrying plasmids and sequencing one of these plasmids completely. Methods: Isolates were typed by XbaI-PFGE, MLST and PCR-based phylotyping. Transformed bla SHV-12 -carrying plasmids were examined by replicon typing, S1-nuclease, conjugation, EcoRI-HindIII-BamHI digests and plasmid MLST. Co-located resistance genes and integrons as well as the bla SHV-12 genetic environment were analysed by PCR and sequencing...
June 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28276133/plasmid-mediated-resistance-to-cephalosporins-and-quinolones-in-escherichia-coli-from-american-crows-in-the-usa
#17
Ivana Jamborova, Monika Dolejska, Ludek Zurek, Andrea K Townsend, Anne B Clark, Julie C Ellis, Ivo Papousek, Alois Cizek, Ivan Literak
American crow (Corvus brachyrhynchos) faeces were tested for Escherichia coli with plasmid-mediated quinolone resistance (PMQR), extended-spectrum beta-lactamases (ESBL) and AmpC beta-lactamases. A total of 590 faecal samples were collected at four roosting sites in the USA and cultivated on selective media. Pulsed-field gel electrophoresis (PFGE) and multi-locus sequence typing (MLST) were performed to assess clonality. Transferability of resistance genes was studied using conjugation and transformation bioassays...
March 9, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28243225/prevalence-and-molecular-characteristics-of-extended-spectrum-%C3%AE-lactamase-genes-in-escherichia-coli-isolated-from-diarrheic-patients-in-china
#18
Li Bai, Lili Wang, Xiaorong Yang, Juan Wang, Xin Gan, Wei Wang, Jin Xu, Qian Chen, Ruiting Lan, Séamus Fanning, Fengqin Li
Background: The emergence and spread of antimicrobial resistance has become a major global public health concern. A component element of this is the spread of the plasmid-encoded extended-spectrum b-lactamase (ESBL) genes, conferring resistance to third-generation cephalosporins. The purpose of this study was to investigate the molecular characteristics of ESBL-encoding genes identified in Escherichia coli cultured from diarrheic patients in China from 2013 to 2014. Materials and Methods: A total of 51 E. coli were confirmed as ESBL producers by double-disk synergy testing of 912 E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28208218/antibiotic-resistance-in-escherichia-coli-in-husbandry-animals-the-african-perspective
#19
REVIEW
C A Alonso, M Zarazaga, R Ben Sallem, A Jouini, K Ben Slama, C Torres
In the last few 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 show 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...
May 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28137797/a-whole-genome-sequencing-approach-to-study-cefoxitin-resistant-salmonella-enterica-serovar-heidelberg-isolates-from-various-sources
#20
Romaine Edirmanasinghe, Rita Finley, E Jane Parmley, Brent P Avery, Carolee Carson, Sadjia Bekal, George Golding, Michael R Mulvey
This study characterized cefoxitin-resistant and -susceptible Salmonella enterica serovar Heidelberg strains from humans, abattoir poultry, and retail poultry to assess the molecular relationships of isolates from these sources in Québec in 2012. Isolates were collected as part of the Canadian Integrated Program for Antimicrobial Resistance Surveillance (CIPARS). All isolates were subjected to antimicrobial susceptibility testing, PCR for CMY-2, pulsed-field gel electrophoresis (PFGE), and whole-genome sequencing (WGS)...
April 2017: Antimicrobial Agents and Chemotherapy
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