نتایج جستجو برای: stec

تعداد نتایج: 1359  

Journal: :Applied and environmental microbiology 2013
Musafiri Karama Carlton L Gyles

Shiga toxin-producing Escherichia coli (STEC) O111:NM is an important serotype that has been incriminated in disease outbreaks in the United States. This study characterized cattle STEC O111:NM for virulence factors and markers by PCR. Major conclusions are that STEC O111:NM characterized in this study lacks stx2 and the full spectrum of nle gene markers, and it has an incomplete OI-122.

2016
Carlota Medus John M. Besser Billie A. Juni Bonnie Koziol Victoria Lappi Kirk E. Smith Craig W. Hedberg

Background.  Enterotoxigenic Escherichia coli (ETEC) and non-O157 Shiga toxin-producing E. coli (STEC) are not detected by conventional culture methods. The prevalence of ETEC infections in the United States is unknown, and recognized cases are primarily associated with foreign travel. Gaps remain in our understanding of STEC epidemiology. Methods.  Two sentinel surveillance sites were enrolled...

Journal: :Acta biochimica Polonica 2012
Sylwia K Bloch Agnieszka Felczykowska Bożena Nejman-Faleńczyk

Shiga toxin-producing Escherichia coli (STEC) strains belong to the group of pathogens that cause bloody diarrhea and hemorrhagic colitis with often severe complications. The main problem with human pathogenic E. coli strains, including STEC, is a wide spectrum of phenotypes and clinical manifestations. It is related to a variety of exchangeable genetic elements, like plasmids, bacteriophages,...

2013

Category: Methodology Improvements Project Title: Comparison of non‐O157 Shiga Toxin‐producing E. coli Detection Systems Mick Bosilevac, USDA, ARS, US Meat Animal Research Center Objective: To identify strengths and weaknesses of Shiga toxin‐producing E coli detection systems and kits in a side by side fashion Three commercial Shiga toxin‐producing E. coli (STEC) detection tests and two thir...

Journal: :Applied and environmental microbiology 2015
Pablo Quirós Alexandre Martínez-Castillo Maite Muniesa

Detection of Shiga toxin-producing Escherichia coli (STEC) by culture methods is advisable to identify the pathogen, but recovery of the strain responsible for the disease is not always possible. The use of DNA-based methods (PCR, quantitative PCR [qPCR], or genomics) targeting virulence genes offers fast and robust alternatives. However, detection of stx is not always indicative of STEC becaus...

Journal: :East African medical journal 2009
J O Oundo Y Iijima H I Boga F Muli S Kariuki

OBJECTIVES To determine the aetiology, epidemiology and sanitary factors of carriage of enteropathogenic Escherichia coli (EPEC) and Shiga-toxin producing E. coli (STEC) in food-handlers working in tourist hotels in three popular tourist destinations in Kenya. DESIGN Cross sectional laboratory based study. SETTING Three tourist destinations of Nairobi, Malindi and Diani in Kenya. SUBJECTS...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2012
Shuwang Ge Barbara Hertel Sang Hi Emden Jan Beneke Jan Menne Hermann Haller Sibylle von Vietinghoff

BACKGROUND Shiga toxin-induced haemolytic uraemic syndrome (STEC-HUS) is an acute multisystem disorder characterized by renal failure, neurological dysfunction, haemolysis and intravascular thrombosis. Circulating microparticles originating from a number of cell types including thrombocytes and leucocytes are elevated in paediatric patients. In vitro data also suggest modification of leucocyte ...

Journal: :The Indian journal of medical research 2008
B Dhanashree P Shrikar Mallya

BACKGROUND & OBJECTIVE Shiga-toxigenic Escherichia coli (STEC) are causative agents of bloody diarrhoea, haemorrhagic colitis (HC) and haemolytic uraemic syndrome (HUS). Humans acquire infections primarily through contaminated beef. In India, STEC has not been implicated as a major cause of diarrhoea. Hence, isolation of STEC from diarrhoeagenic stool samples of patients and beef samples market...

Journal: :Revue scientifique et technique 2006
J M Fairbrother E Nadeau

Escherichia coli is one of the main inhabitants of the intestinal tract of most mammalian species, including humans, and birds. Shiga toxin-producing E. coli (STEC), also called verotoxinogenic E. coli, usually do not cause disease in animals but may cause watery diarrhoea, haemorrhagic colitis, and/or haemolytic uraemic syndrome in humans. Zoonotic STEC include the O157:H7 strains and, with in...

Journal: :Applied and environmental microbiology 2002
R Cobbold P Desmarchelier

To examine the dissemination of Shiga-toxigenic Escherichia coli (STEC) within cattle groups, dairy calves on two farms utilizing different calf-rearing practices were exposed to a traceable STEC strain. Test strain dissemination differed significantly between farms, with a higher prevalence being associated with group penning. Pen floors and calf hides may be the main environmental mechanisms ...

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