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https://www.readbyqxmd.com/read/28930021/blactx-m-27-encoding-escherichia-coli-sequence-type-131-lineage-c1-m27-clone-in-clinical-isolates-germany
#1
Hiren Ghosh, Swapnil Doijad, Linda Falgenhauer, Moritz Fritzenwanker, Can Imirzalioglu, Trinad Chakraborty
We examined extended-spectrum β-lactamase-producing isolates from livestock, humans, companion animals, food, and the environment during 2009-2016 in Germany for the presence of CTX-M-27 allele within Escherichia coli sequence type (ST) 131. E. coli ST131 C1-M27 was exclusively present in humans; its incidence increased from 0% in 2009 to 45% in 2016.
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28927684/extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-bacteremia-comparison-of-pediatric-and-adult-populations
#2
Wan-Lin Tsai, Chih-Hsin Hung, Hui-An Chen, Jiun-Ling Wang, I-Fei Huang, Yee-Hsuan Chiou, Yao-Shen Chen, Susan Shin-Jung Lee, Wan-Yu Hung, Ming-Fang Cheng
BACKGROUND/PURPOSE: The prevalence of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli is increasing worldwide. This study investigated the clinical features and bacteriology of pediatric patients with ESBL-producing E. coli bacteremia and compared their characteristics with those of adult patients. METHODS: Clinical and laboratory data from all of the 41 patients aged ≤18 years diagnosed with E. coli bacteremia were collected over 5 years. Patients aged >18 years diagnosed with E...
August 31, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28922058/evolution-of-regions-containing-antibiotic-resistance-genes-in-fii-2-fib-1-colv-colla-virulence-plasmids
#3
Robert A Moran, Ruth M Hall
Three ColV virulence plasmids carrying antibiotic resistance genes were assembled from draft genome sequences of commensal ST95, ST131, and ST2705 Escherichia coli isolates from healthy Australians. Plasmids pCERC4, pCERC5, and pCERC9 include almost identical backbones containing FII-2 and FIB-1 replicons and the conserved ColV virulence region with an additional ColIa determinant. Only pCERC5 includes a complete, uninterrupted F-like transfer region and was able to conjugate. pCERC5 and pCERC9 contain Tn1721, carrying the tet(A) tetracycline resistance determinant in the same location, with Tn2 (blaTEM; ampicillin resistance) interrupting the Tn1721 in pCERC5...
September 18, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28918585/prevalence-and-risk-factors-for-intestinal-carriage-of-ctx-m-type-esbls-in-enterobacteriaceae-from-a-thai-community
#4
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/28890469/occurrence-of-extended-spectrum-and-ampc-type-%C3%AE-lactamase-genes-in-escherichia-coli-isolated-from-water-environments-in-northern-thailand
#5
Kanit Assawatheptawee, Uttapoln Tansawai, Anong Kiddee, Phetrada Thongngen, Phiraphat Punyadi, Tayawee Romgaew, Phattaraporn Kongthai, Tawatchai Sumpradit, Pannika R Niumsup
Sixty-eight cefotaxime-resistant Escherichia coli isolates were recovered from different water environments in Northern Thailand. Isolates were mostly resistant to ceftazidime and aztreonam (>90%). The most common extended-spectrum β-lactamase-encoding gene was blaCTX-M-group 1 (75%) followed by blaCTX-M-group 9 (13.2%). The co-existence of blaCTX-M and AmpC-type β-lactamase genes was detected in 4 isolates (5.9%). Two E. coli isolates carrying blaCTX-M from canal and river water samples belonged to the phylogenetic group B2-ST131, which is known to be pathogenic...
September 9, 2017: Microbes and Environments
https://www.readbyqxmd.com/read/28879712/prevalence-of-st131-and-st1193-among-bloodstream-isolates-of-escherichia-coli-not-susceptible-to-ciprofloxacin-in-a-tertiary-care-university-hospital-in-korea-2013-2014
#6
Youngjin Kim, Taesang Oh, You Sun Nam, Sun Young Cho, Hee Joo Lee
We investigated the ST distribution of bloodstream isolates of E. coli that were not susceptible to ciprofloxacin (CIP-NS isolates), collected from 2013 to 2014 in a tertiary care hospital. Fifty-nine CIP-NS isolates were collected. ST131 was the most frequent ST (37.3%) isolate, followed by ST1193 (23.7%). ST131 and ST1193 showed significant differences in ESBL production and lactose fermentation. Further study should be continued on the monitoring of resistant strains.
September 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28877757/whole-genome-sequencing-of-esbl-producing-escherichia-coli-isolated-from-patients-farm-waste-and-canals-in-thailand
#7
Chakkaphan Runcharoen, Kathy E Raven, Sandra Reuter, Teemu Kallonen, Suporn Paksanont, Jeeranan Thammachote, Suthatip Anun, Beth Blane, Julian Parkhill, Sharon J Peacock, Narisara Chantratita
BACKGROUND: Tackling multidrug-resistant Escherichia coli requires evidence from One Health studies that capture numerous potential reservoirs in circumscribed geographic areas. METHODS: We conducted a survey of extended β-lactamase (ESBL)-producing E. coli isolated from patients, canals and livestock wastewater in eastern Thailand between 2014 and 2015, and analyzed isolates using whole genome sequencing. RESULTS: The bacterial collection of 149 isolates consisted of 84 isolates from a single hospital and 65 from the hospital sewer, canals and farm wastewater within a 20 km radius...
September 6, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28874372/triple-edged-sword-multiple-modes-of-action-of-a-monoclonal-antibody-against-the-multi-drug-resistant-escherichia-coli-clone-st131-h30
#8
Luis M Guachalla, Katharina Hartl, Cecília Varga, Lukas Stulik, Irina Mirkina, Stefan Malafa, Eszter Nagy, Gábor Nagy, Valéria Szijártó
The multi-drug resistant extra-intestinal pathogenic Escherichia coli clone, ST131-H30 has spread worldwide. This clone expresses a conserved LPS O-antigen, O25b. Previously, we described monoclonal antibodies (mAbs) specific to the O25b antigen and characterized them as diagnostic and therapeutic tools. In this study evidence is provided that besides the previously shown complement mediated bactericidal effect, an O25b-specific humanized mAb, A1124 also enhances opsonophagocytic uptake by the murine macrophage cell line RAW264...
September 5, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28861113/uropathogenic-escherichia-coli-st131-in-urinary-tract-infections-in-children
#9
Ki Wook Yun, Mi-Kyung Lee, Wonyong Kim, In Seok Lim
PURPOSE: Escherichia coli sequence type (ST) 131, a multidrug-resistant clone causing extraintestinal infections, has rapidly become prevalent worldwide. However, the epidemiological and clinical features of pediatric infections are poorly understood. We aimed to explore the characteristics of ST131 Escherichia coli isolated from Korean children with urinary tract infections. METHODS: We examined 114 uropathogenic E. coli (UPEC) isolates from children hospitalized at Chung-Ang University Hospital between 2011 and 2014...
July 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28834351/preliminary-insights-into-the-occurrence-of-similar-clones-of-extended-spectrum-beta-lactamase-producing-bacteria-in-humans-animals-and-the-environment-in-tanzania-a-systematic-review-and-meta-analysis-between-2005-and-2016
#10
REVIEW
J Seni, N Moremi, M Matee, F van der Meer, R DeVinney, S E Mshana, J D D Pitout
The emergence and spread of extended-spectrum beta-lactamase producing Enterobacteriaceae (ESBL-PE) are complex and of the public health concern across the globe. This review aimed at assessing the ESBL-PE clones circulating in humans, animals and the environment to provide evidence-based insights for combating ESBL-PE using One Health approach. Systematic search from Medline/PubMed, Google Scholar and African Journals Online was carried out and retrieved nine eligible articles (of 131) based on phenotypic and genotypic detection of ESBL-PE between 2005 and 2016 in Tanzania...
August 22, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28825894/adhesion-and-invasion-to-epithelial-cells-and-motility-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-reveal-st131-superiority-a-comparative-in-vitro-study-of-extraintestinal-pathogenic-e-coli-lineages
#11
Kira Kondratyeva, Ayala Wollman, Gabi Gerlitz, Shiri Navon-Venezia
PURPOSE: Extended-spectrum β-lactamase (ESBL)-producing extraintestinal pathogenic Escherichia coli (ExPEC) sequence type ST131 is pandemic, and it is the major contributor to antibiotic resistance in E. coli. Despite its epidemiological superiority, the physiological reasons that decipher its success remain elusive. We aimed to compare the adhesion, invasion and motility potential of ST131 versus other E. coli lineages. METHODOLOGY: In this in vitro comparative study, 14 ESBL-producing ExPEC community-onset bacteremia isolates were chosen from a reported clinical collection (Karfunkel D, Carmeli Y, Chmelnitsky I, Kotlovsky T, Navon-Venezia S...
August 22, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28811343/comparative-genomics-of-escherichia-coli-isolated-from-skin-and-soft-tissue-and-other-extraintestinal-infections
#12
Amit Ranjan, Sabiha Shaik, Nishant Nandanwar, Arif Hussain, Sumeet K Tiwari, Torsten Semmler, Savita Jadhav, Lothar H Wieler, Munirul Alam, Rita R Colwell, Niyaz Ahmed
Escherichia coli, an intestinal Gram-negative bacterium, has been shown to be associated with a variety of diseases in addition to intestinal infections, such as urinary tract infections (UTIs), meningitis in neonates, septicemia, skin and soft tissue infections (SSTIs), and colisepticemia. Thus, for nonintestinal infections, it is categorized as extraintestinal pathogenic E. coli (ExPEC). It is also an opportunistic pathogen, causing cross infections, notably as an agent of zoonotic diseases. However, comparative genomic data providing functional and genetic coordinates for ExPEC strains associated with these different types of infections have not proven conclusive...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28801381/fluoroquinolone-resistance-mechanisms-by-molecular-epidemiologic-study-of-ciprofloxacin-nonsusceptible-escherichia-coli-sequence-types-isolated-from-clinical-specimens-in-a-tertiary-care-university-hospital-in-korea-emergence-of-clone-st131-2006-2008
#13
Hyung-Seok Yang, Youngjin Kim, Sun Young Cho, You Sun Nam, Tae Sang Oh, Kyung-Sun Park, Hyun-Chul Kim, Hee Joo Lee
To investigate the sequence types (STs) and fluoroquinolone resistance related mutations among ciprofloxacin (CIP)-non-susceptible extended-spectrum β-lactamase (ESBL)-producing E. coli isolated from Korean patients from 2006-2008. The prevalence of fluoroquinolone resistance-determining region (QRDR) mutations in gyrA, gyrB, parC, and parE and plasmid-mediated quinolone resistance (PMQR) genes were also studied. Multilocus sequence typing (MLST) was performed to identify STs. The most common ST was ST131 (33/51, 64...
August 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28797324/novel-mcr-3-variant-encoding-mobile-colistin-resistance-in-an-st131-escherichia-coli-isolate-from-bloodstream-infection-denmark-2014
#14
Louise Roer, Frank Hansen, Marc Stegger, Ute Wolff Sönksen, Henrik Hasman, Anette M Hammerum
A novel variant of the plasmid-borne colistin resistance gene mcr-3 was detected on an IncHI2 plasmid in an ST131 CTX-M-55-producing Escherichia coli isolate from a Danish patient with bloodstream infection in 2014. The discovery of novel plasmid-borne genes conferring resistance to colistin is of special interest since colistin has reemerged as an important drug in the treatment of infections with multidrug-resistant Gram-negative bacteria.
August 3, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28774984/complete-genome-sequence-of-blactx-m-27-encoding-escherichia-coli-strain-h105-of-sequence-type-131-lineage-c1-h30r
#15
Hiren Ghosh, Boyke Bunk, Swapnil Doijad, Judith Schmiedel, Linda Falgenhauer, Cathrin Spröer, Can Imirzalioglu, Jörg Overmann, Trinad Chakraborty
Escherichia coli sequence type 131 (ST131) is the most frequent antimicrobial-resistant lineage of E. coli, propagating extended-spectrum β-lactamases (ESBL) worldwide. Recently, an alarming rate of increase in isolates of the sublineage C1/H30R-blaCTX-M-27 of ST131 in geographically distant countries was reported. Here, we present the complete genome sequence of the ST131 sublineage C1/H30R E. coli isolate harboring blaCTX-M-27 from Germany.
August 3, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28738847/longitudinal-genomic-surveillance-of-multidrug-resistant-escherichia-coli-carriage-in-a-long-term-care-facility-in-the-united-kingdom
#16
Hayley J Brodrick, Kathy E Raven, Teemu Kallonen, Dorota Jamrozy, Beth Blane, Nicholas M Brown, Veronique Martin, M Estée Török, Julian Parkhill, Sharon J Peacock
BACKGROUND: Residents of long-term care facilities (LTCF) may have high carriage rates of multidrug-resistant pathogens, but are not currently included in surveillance programmes for antimicrobial resistance or healthcare-associated infections. Here, we describe the value derived from a longitudinal epidemiological and genomic surveillance study of drug-resistant Escherichia coli in a LTCF in the United Kingdom (UK). METHODS: Forty-five of 90 (50%) residents were recruited and followed for six months in 2014...
July 25, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28720578/systematic-longitudinal-survey-of-invasive-escherichia-coli-in-england-demonstrates-a-stable-population-structure-only-transiently-disturbed-by-the-emergence-of-st131
#17
Teemu Kallonen, Hayley J Brodrick, Simon R Harris, Jukka Corander, Nicholas M Brown, Veronique Martin, Sharon J Peacock, Julian Parkhill
Escherichia coli associated with urinary tract infections and bacteremia has been intensively investigated, including recent work focusing on the virulent, globally disseminated, multidrug-resistant lineage ST131. To contextualize ST131 within the broader E. coli population associated with disease, we used genomics to analyze a systematic 11-yr hospital-based survey of E. coli associated with bacteremia using isolates collected from across England by the British Society for Antimicrobial Chemotherapy and from the Cambridge University Hospitals NHS Foundation Trust...
July 18, 2017: Genome Research
https://www.readbyqxmd.com/read/28709901/multicenter-collaboration-study-on-the-%C3%AE-lactam-resistant-enterobacteriaceae-in-japan-the-65th-anniversary-public-interest-purpose-project-of-the-japanese-society-of-chemotherapy
#18
Yoshikazu Ishii, Kotaro Aoki, Kazuhiro Tateda, Hiroshi Kiyota
This study was conducted using the same method of the "1-day multicenter collaborative research for Clostridium difficile infectious". This surveillance study was performed by 38 participating medical facilities across Japan. Of the 268 fecal specimens collected in this study, 5 (1.9%) carbapenem-resistant Enterobacteriaceae (CRE) were judged carbapenem resistant by the criteria of the Infectious Disease Act, Japan (2 mg/L or more and 64 mg/L or more MICs for imipenem and cefmetazole, respectively). However, no isolate was shown to have a meropenem MIC of 2 mg/L or more...
September 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28700648/highly-diverse-and-antimicrobial-susceptible-escherichia-coli-display-a-na%C3%A3-ve-bacterial-population-in-fruit-bats-from-the-republic-of-congo
#19
Kathrin Nowak, Jakob Fahr, Natalie Weber, Antina Lübke-Becker, Torsten Semmler, Sabrina Weiss, Jean-Vivien Mombouli, Lothar H Wieler, Sebastian Guenther, Fabian H Leendertz, Christa Ewers
Bats are suspected to be a reservoir of several bacterial and viral pathogens relevant to animal and human health, but studies on Escherichia coli in these animals are sparse. We investigated the presence of E. coli in tissue samples (liver, lung and intestines) collected from 50 fruit bats of five different species (Eidolon helvum, Epomops franqueti, Hypsignathus monstrosus, Myonycteris torquata, Rousettus aegyptiacus) of two different areas in the Republic of Congo between 2009 and 2010. To assess E. coli pathotypes and phylogenetic relationships, we determined the presence of 59 virulence associated genes and multilocus sequence types (STs)...
2017: PloS One
https://www.readbyqxmd.com/read/28686503/characterization-of-carbapenem-resistant-escherichia-coli-isolates-through-the-whole-genome-sequencing-analysis
#20
Yanping Luo, Rong Luo, Hong Ding, Xiu Ren, Haipeng Luo, Ying Zhang, Liyan Ye, Shenghui Cui
Limited studies have characterized multiple carbapenem-resistant Escherichia coli isolates and compared their genetic characteristics through whole-genome sequencing (WGS) because of the scarcity of these isolates. In this study, we determined the prevalence of carbapenem resistance in 2,993 E. coli isolates collected from three Chinese hospitals. The carbapenem-resistant isolates were further characterized by WGS, and the molecular epidemiological characters and resistance mechanisms were explored through the publicly available platforms from the Center for Genomic Epidemiology...
July 7, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
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