نتایج جستجو برای: atypical epec

تعداد نتایج: 47438  

Journal: :Applied and environmental microbiology 2009
Francis Girard Francis Dziva Mark P Stevens Gad Frankel

Enteropathogenic Escherichia coli (EPEC) can be found in healthy and diarrheic cattle; however, little is known about the role of attaching and effacing (A/E) lesion formation in colonization of bovine intestinal mucosa by such strains. We show that typical and atypical EPEC induce A/E lesions on calf intestinal explants independently of Tir tyrosine phosphorylation and TccP. Our data support t...

2007
Andrew D. Whale Rodrigo T. Hernandes Tadasuke Ooka Lothar Beutin Stephanie Schüller Junkal Garmendia Lynette Crowther Mônica A. M. Vieira Yoshitoshi Ogura Gladys Krause Alan D. Phillips Tania A. T. Gomes Tetsuya Hayashi Gad Frankel

Enteropathogenic Escherichia coli (EPEC) is a major cause of infantile diarrhoea in developing countries. While colonizing the gut mucosa, EPEC triggers extensive actin-polymerization activity at the site of intimate bacterial attachment, which is mediated by avid interaction between the outer-membrane adhesin intimin and the type III secretion system (T3SS) effector Tir. The prevailing dogma i...

Background: Foodborne infection caused by EnterotoxigenicEscherichia coli (ETEC) and Enteropathogenic Escherichia coli (EPEC) is one of the major health problems, particularly in the developing countries. Therefore, it is vital to identify the origin of food contamination to plan control strategies efficiently. Method: A tota...

Journal: :Journal of clinical microbiology 2002
Jun Yatsuyanagi Shioko Saito Hiroyasu Sato Yoshimichi Miyajima Ken-Ichi Amano Katsuhiko Enomoto

Virulence characteristics of diarrheal outbreak-associated Escherichia coli O55:NM, O126:NM, and O111:NM were examined. The E. coli O55:NM strains were atypical enteropathogenic E. coli (EPEC), while the E. coli O126:NM and O111:NM strains should be classified as enteroaggregative E. coli (EAggEC). The contributions of EPEC and EAggEC to the human disease burden in Japan might be significantly ...

2016
Fatemeh Doregiraee Masoud Alebouyeh Bahar Nayeri Fasaei Saeed Charkhkar Elahe Tajedin Mohammad Reza Zali

AIM The purpose of this study was to investigate the prevalence of enteropathogenic Escherichia coli (EPEC) and shiga toxin producing E. coli (STEC) strains in healthy broilers in Iran. BACKGROUND STEC and EPEC strains as diarrheagenic E. coli are among the most prevalent causative agents in acute diarrhea. Domestic animals, mainly cattle and sheep, have been implicated as the principal reser...

Journal: :iranian journal of microbiology 0
mohammad mohammadzadeh department of molecular biology, pasteur institute of iran. mana oloomi department of molecular biology, pasteur institute of iran. saeid bouzari department of molecular biology, pasteur institute of iran.

background and objectives: enteropathogenic escherichia coli (epec) divided into two groups typical and atypical (aspect). the main virulence genes are located in a pathogenicity island called lee ( locus of enterocyte effacement ). lee frequently inserted in trna genes of selc , pheu and phev in the bacterial chromosome. tepec and aepec strains have some differences in their pathogenicity. the...

Journal: :Memorias do Instituto Oswaldo Cruz 2007
Vanessa Bueris Marcelo Palma Sircili Carla Romano Taddei Maurilio Fernandes dos Santos Marcia Regina Franzolin Marina Baquerizo Martinez Suzana Ramos Ferrer Mauricio Lima Barreto Luiz Rachid Trabulsi

We identified different diarrheagenic (DEC) Escherichia coli pathotypes isolated from 1,207 children with and without acute endemic diarrhea in Salvador, Bahia, Brazil collected as part of a case-control study. Since the identification of DEC cannot be based on only biochemical and culture criteria, we used a multiplex polymerase chain reaction developed by combining five specific primer pairs ...

2010
Gopinath Balakrish Nair Thandavarayan Ramamurthy Mihir Kumar Bhattacharya Triveni Krishnan Sandipan Ganguly Dhira Rani Saha Krishnan Rajendran Byomkesh Manna Mrinmoy Ghosh Keinosuke Okamoto Yoshifumi Takeda

BACKGROUND This study was conducted to determine the etiology of diarrhoea in a hospital setting in Kolkata. Active surveillance was conducted for 2 years on two random days per week by enrolling every fifth diarrhoeal patient admitted to the Infectious Diseases and Beliaghata General Hospital in Kolkata. RESULTS Most of the patients (76.1%) had acute watery diarrhoea in association with vomi...

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2011
Saeid Bouzari Mohammad M Aslani Mana Oloomi Anis Jafari Amir Dashti

Enteropathogenic Escherichia coli (EPEC) comprise one of the six categories of diarrhoeagenic E. coli (DEC). EPEC is subgrouped into typical (tEPEC) and atypical (aEPEC). The identification of DEC cannot be based only on cultural and biochemical criteria, since they are indistinguishable from the non-pathogenic E. coli commonly found in human feces. Several PCR methods, with both single and mul...

2014
Miriam Rodriguez Fernandes Aline Ignacio Fernando H Martins Leticia B Rocha Roxane M. F Piazza Tânia M. I Vaz Mario Julio Avila-Campos Viviane Nakano

INTRODUCTION Escherichia coli causes gastroenteritis in humans and animals. CASE PRESENTATION In this study, both Shiga toxin-producing E. coli (STEC) and atypical enteropathogenic E. coli (EPEC) strains were identified in a stool sample from a healthy child, and they were serotyped as Shiga toxin-producing E. coli (STEC) ONT : H19 and atypical enteropathogenic E. coli (EPEC) O37 : H45. CON...

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