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https://www.readbyqxmd.com/read/28411217/transfer-potential-of-plasmids-encoding-extended-spectrum-cephalosporin-resistance-in-escherichia-coli-from-poultry
#1
Solveig Sølverød Mo, Marianne Sunde, Hanna Karin Ilag, Solveig Langsrud, Even Heir
Escherichia coli resistant to extended-spectrum cephalosporins (ESC) are widely distributed in Norwegian broiler production, and the majority harbour transferable IncK or IncI1 plasmids with blaCMY-2 Persistent occurrence in broiler farms may occur through survival of ESC-resistant E. coli 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...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28396551/specific-blactx-m-8-inci1-plasmid-transfer-among-genetically-diverse-escherichia-coli-across-humans-and-chickens
#2
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 stools 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 (pST) 113. The genetic contexts of the 9 blaCTX-M-8/IncI1-pST113 were similar, regardless of the source. These results suggest probable local transfer of the blaCTX-M-8/IncI1 between humans and chicken with genetically diverse E...
April 10, 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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/28137797/a-whole-genome-sequencing-approach-to-study-cefoxitin-resistant-salmonella-enterica-serovar-heidelberg-isolates-from-various-sources
#12
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
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
#13
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/27938421/high-prevalence-of-fosfomycin-resistance-gene-fosa3-in-bla-ctx-m-harbouring-escherichia-coli-from-urine-in-a-chinese-tertiary-hospital-during-2010-2014
#14
X-L Cao, H Shen, Y-Y Xu, X-J Xu, Z-F Zhang, L Cheng, J-H Chen, Y Arakawa
Fosfomycin has become a therapeutic option in urinary tract infections. We identified 57 fosfomycin-resistant Escherichia coli from 465 urine-derived extended-spectrum β-lactamase (ESBL)-producing isolates from a Chinese hospital during 2010-2014. Of the 57 fosfomycin-resistant isolates, 51 (89·5%) carried fosA3, and one carried fosA1. Divergent pulsed-field gel electrophoresis profiles and multi-locus sequence typing results revealed high clonal diversity in the fosA3-positive isolates. Conjugation experiments showed that the fosA3 genes from 50 isolates were transferable, with IncFII or IncI1 being the most prevalent types of plasmids...
March 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/27828730/characterization-of-resistance-genes-and-plasmids-from-outbreaks-and-illness-clusters-caused-by-salmonella-resistant-to-ceftriaxone-in-the-united-states-2011-2012
#15
Jason P Folster, Julian E Grass, Amelia Bicknese, Julia Taylor, Cindy R Friedman, Jean M Whichard
Salmonella is an important cause of foodborne illness; however, quickly identifying the source of these infections can be difficult, and source identification is a crucial step in preventing additional illnesses. Although most infections are self-limited, invasive salmonellosis may require antimicrobial treatment. Ceftriaxone, an extended-spectrum cephalosporin, is commonly used for treatment of salmonellosis. Previous studies have identified a correlation between the food animal/retail meat source of ceftriaxone-resistant Salmonella and the type of resistance gene and plasmid it carries...
March 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27826018/analysis-of-pcerc7-a-small-antibiotic-resistance-plasmid-from-a-commensal-st131-escherichia-coli-defines-a-diverse-group-of-plasmids-that-include-various-segments-adjacent-to-a-multimer-resolution-site-and-encode-the-same-nika-relaxase-accessory-protein-enabling
#16
Robert A Moran, Ruth M Hall
The ampicillin resistance plasmid pCERC7, carrying transposon Tn2 with an IS4 insertion, was detected in the draft genome of a commensal Escherichia coli isolate. The genome data also revealed that this isolate belongs to ST131, clade B. pCERC7 is 9712bp comprised of a 3319bp backbone, Tn2::IS4 (6388bp) and 5bp of target site duplication, and was present at a copy number of 40. pCERC7 is related to several plasmids composed of only the backbone, or the backbone with the Tn2 insertion in the same position. These plasmids have been found previously in Escherichia coli or Salmonella enterica recovered in several different countries from as early as the 1970s...
November 5, 2016: Plasmid
https://www.readbyqxmd.com/read/27821452/ctx-m-190-a-novel-%C3%AE-lactamase-resistant-to-tazobactam-and-sulbactam-identified-in-an-escherichia-coli-clinical-isolate
#17
Zhen Shen, Baixing Ding, Yingmin Bi, Shi Wu, Su Xu, Xiaogang Xu, Qinglan Guo, Minggui Wang
A novel β-lactamase, CTX-M-190, derived from CTX-M-55 by a single substitution of Ser for Thr at position 133 (Ser133Thr), was identified in a natural Escherichia coli clinical isolate. CTX-M-190 exhibited potent hydrolytic activity against cefotaxime, with a kcat/Km ratio of 14.5 μM(-1) s(-1), and was highly resistant to inhibition by the β-lactamase inhibitors tazobactam and sulbactam, whose 50% inhibitory concentrations were 77- and 55-fold higher, respectively, for CTX-M-190 than for CTX-M-55. blaCTX-M-190 was located within the genetic platform ISEcp1-blaCTX-M-orf477, which was harbored by a 70-kb IncI1 plasmid...
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27795239/draft-genome-sequence-of-an-escherichia-coli-strain-isolated-from-a-gallus-gallus-broiler-producing-the-novel-ctx-m-166-variant
#18
Vera Manageiro, Lurdes Clemente, Sílvia Duarte, Luís Vieira, Manuela Caniça
We report here the draft genome sequence of the CTX-M-166-harboring O6:H16 sequence type 48 (ST48)-fimH34 Escherichia coli strain recovered from a Gallus gallus broiler. Sequence analyses revealed the presence of an IncI1/ST103-ISEcp1-blaCTX-M-166-orf477 plasmid region and of diverse antibiotic resistance and virulence-acquired genes.
October 6, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27773543/high-virulence-cmy-2-and-ctx-m-2-producing-avian-pathogenic-escherichia-coli-strains-isolated-from-commercial-turkeys
#19
Ketrin Cristina da Silva, Marcos Paulo Vieira Cunha, Louise Cerdeira, Maria Gabriela Xavier de Oliveira, Mirela Caroline Vilela de Oliveira, Cleise Ribeiro Gomes, Nilton Lincopan, Terezinha Knöbl, Andrea Micke Moreno
This study reports the high-virulence phylogenetic backgrounds of CMY-2- and CTX-M-2-producing avian pathogenic Escherichia coli strains isolated from turkeys sent to slaughter and condemned by airsacculitis in Brazil. Among 300 air sac samples, seven E. coli strains produced plasmid-mediated CMY-2-type AmpC, of which three carried also the blaCTX-M-2 Extended Spectrum Beta-Lactamase encoding gene. Interestingly, the transfer of the blaCMY-2 gene was positive for three E. coli strains, being associated with the presence of IncI1 plasmids...
January 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27746775/inchi2-plasmids-are-predominant-in-antibiotic-resistant-salmonella-isolates
#20
Wenyao Chen, Tingzi Fang, Xiujuan Zhou, Daofeng Zhang, Xianming Shi, Chunlei Shi
The wide usage of antibiotics contributes to the increase in the prevalence of antibiotic-resistant Salmonella. Plasmids play a critical role in horizontal transfer of antibiotic resistance markers in Salmonella. This study aimed to screen and characterize plasmid profiles responsible for antibiotic resistance in Salmonella and ultimately to clarify the molecular mechanism of transferable plasmid-mediated antibiotic resistance. A total of 226 Salmonella isolates were examined for antimicrobial susceptibility by a disk diffusion method...
2016: Frontiers in Microbiology
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