نتایج جستجو برای: escherichia coliecoli

تعداد نتایج: 126679  

Journal: :Applied and environmental microbiology 2013
Afonso G Abreu Vanessa Bueris Tatiane M Porangaba Marcelo P Sircili Fernando Navarro-Garcia Waldir P Elias

Autotransporter (AT) protein-encoding genes of diarrheagenic Escherichia coli (DEC) pathotypes (cah, eatA, ehaABCDJ, espC, espI, espP, pet, pic, sat, and tibA) were detected in typical and atypical enteropathogenic E. coli (EPEC) in frequencies between 0.8% and 39.3%. Although these ATs have been described in particular DEC pathotypes, their presence in EPEC indicates that they should not be co...

Journal: :Journal of bacteriology 2010
Lisa C Crossman Roy R Chaudhuri Scott A Beatson Timothy J Wells Mickael Desvaux Adam F Cunningham Nicola K Petty Vivienne Mahon Carl Brinkley Jon L Hobman Stephen J Savarino Susan M Turner Mark J Pallen Charles W Penn Julian Parkhill A Keith Turner Timothy J Johnson Nicholas R Thomson Stephen G J Smith Ian R Henderson

In most cases, Escherichia coli exists as a harmless commensal organism, but it may on occasion cause intestinal and/or extraintestinal disease. Enterotoxigenic E. coli (ETEC) is the predominant cause of E. coli-mediated diarrhea in the developing world and is responsible for a significant portion of pediatric deaths. In this study, we determined the complete genomic sequence of E. coli H10407,...

2013
Tracy H. Hazen Jason W. Sahl Claire M. Fraser Michael S. Donnenberg Flemming Scheutz David A. Rasko

We report the draft genome sequences of three enteropathogenic Escherichia coli (EPEC) isolates that display the O157 serogroup but do not have the Shiga toxin genes (stx), which are characteristic of O157 enterohemorrhagic E. coli (EHEC). E. coli strain RN587/1 has the O157:H8 serotype and possesses the EAF plasmid characteristic of typical EPEC (J. B. Kaper, J. P. Nataro, and H. L. Mobley, Na...

Journal: :Journal of food protection 2004
T R Callaway C H Stahl T S Edrington K J Genovese L M Lincoln R C Anderson S M Lonergan T L Poole R B Harvey D J Nisbet

Escherichia coli O157:H7 is a virulent foodborne pathogen that causes severe human illness and inhabits the intestinal tract of food animals. Colicins are antimicrobial proteins produced by E. coli strains that inhibit or kill other E. coli. In the present Study, the efficacy of three pore-forming colicins (El, N, and A) were quantified in vitro against E. coli O157:H7 strains 86-24 and 933. Co...

Journal: :The new microbiologica 2013
Massimo Ciccozzi Maria Giufre' Marisa Accogli Alessandra Lo Presti Caterina Graziani Eleonora Cella Marina Cerquetti

Chicken products represent a source for multidrug-resistant Escherichia coli causing extraintestinal infections (ExPEC) in humans. We applied phylogenetic analysis to a collection of E. coli strains from both hosts (poultry/humans) to improve our understanding of the origin and spread of ExPEC in humans. The dataset consisted of 58 sequences among 172 E. coli strains from human extraintestinal ...

2017
Lutz Geue Christian Menge Christian Berens Stefanie A. Barth

Shiga toxin-producing Escherichia coli (STEC) strains are important zoonotic enteric pathogens with the main reservoir in cattle. Here, we present the genomes of two STEC strains and one atypical enteropathogenic E. coli strain from cattle origin, obtained during a longitudinal study in German cattle herds.

1997
ROBERT L. BUCHANAN MICHAEL P. DOYLE

New safety recommendations for destroying enterohemorrhagic E. coli (EHEC) include cooking hamburgers thoroughly, incorporating a procedure that kills EHEC in the manufacture of raw fermented sausage, such as salami, and pasteurizing or using an equivalent processing method for apple cider. Public health problems with EHEC are being recognized throughout the world. The need for consumer educati...

Journal: :Journal of bacteriology 2004
Chuan-Peng Ren Roy R Chaudhuri Amanda Fivian Christopher M Bailey Martin Antonio Wayne M Barnes Mark J Pallen

ETT2 is a second cryptic type III secretion system in Escherichia coli which was first discovered through the analysis of genome sequences of enterohemorrhagic E. coli O157:H7. Comparative analyses of Escherichia and Shigella genome sequences revealed that the ETT2 gene cluster is larger than was previously thought, encompassing homologues of genes from the Spi-1, Spi-2, and Spi-3 Salmonella pa...

ژورنال: :نوآوری در علوم و فناوری غذایی 0

فعالیت ضدباکتریایی (حداقل غلظت مهارکنندگی و کشندگی) عصاره آبی گزنه و مرزنگوش در مقابل 3 باکتری بیماری­زا و عامل فساد مواد غذایی escherichia coli, salmonella typhi و pseudomonasaeruginosa با استفاده از روش رقتلوله­ای(macro dilution method) ارزیابی شد. مقدار حداقل غلظت بازدارندگی عصاره آبی مرزنگوش بر salmonella typhi mg/ml 25/1 و در مورد pseudomonas aeruginosaو escherichia coli برابر با mg/ml  5 ...

Journal: :Infection and immunity 2003
Alfredo G Torres James B Kaper

Adherence of enterohemorrhagic Escherichia coli (EHEC) to the intestinal epithelium is essential for initiation of infection. Intimin is the only factor demonstrated to play a role in intestinal colonization by EHEC O157:H7. Other attempts to identify additional adhesion factors in vitro have been unsuccessful, suggesting that expression of these factors is under tight regulation. We sought to ...

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