نتایج جستجو برای: stec

تعداد نتایج: 1359  

Journal: :Applied and environmental microbiology 2010
James E Keen William W Laegreid Carol G Chitko-McKown Lisa M Durso James L Bono

Shiga-toxigenic Escherichia coli (STEC) O157 occurrence was determined along the entire gastrointestinal tract (GIT) of each of four naturally shedding cattle and at three sites in 61 slaughter cattle. STEC O157 was distributed along the entire GIT, though interanimal distribution was variable. Neither feces nor rectoanal-junction samples accurately predicted the STEC O157-negative status of an...

Journal: :Journal of clinical microbiology 2000
H Fukushima K Hoshina M Gomyoda

Culture on cefixime, tellurite, and sorbitol-MacConkey agar after HCl treatment facilitated the growth of 410 (94%) of 436 eae-positive Shiga toxin-producing Escherichia coli (STEC) strains and 17 (16%) of 107 eae-negative STEC strains. This selectivity was closely related to acid resistance in E. coli and tellurite resistance in eae-positive STEC strains.

Journal: :Journal of animal science 2007
H S Hussein

During the past 23 yr, a large number of human illness outbreaks have been traced worldwide to consumption of undercooked ground beef and other beef products contaminated with Shiga toxin-producing Escherichia coli (STEC). Although several routes exist for human infection with STEC, beef remains a main source. Thus, beef cattle are considered reservoirs of O157 and nonO157 STEC. Because of the ...

2012
Ximena Blanco Crivelli María V. Rumi Julio C. Carfagnini Osvaldo Degregorio Adriana B. Bentancor

Shigatoxigenic Escherichia coli (STEC) strains are worldwide zoonotic pathogen responsible for different cases of human disease including hemolytic uremic syndrome (HUS). Transmission of STEC to humans occurs through the consumption of food and water contaminated by faeces of carriers and by person-to-person contact. The objective of this study was two-fold: (1) to investigate whether synanthro...

Journal: :Journal of food protection 2016
Hongye Wang Zhao Chen Xiuping Jiang

A culture method to detect non-O157 Shiga toxin-producing Escherichia coli (STEC) was optimized in this study. The finished dairy compost with 30% moisture content was inoculated with a cocktail of six non-O157 STEC serovars at initial concentrations of 1 to 100 CFU/g. Afterward, non-O157 STEC cells in the inoculated dairy compost were enriched by four methods, followed by plating onto cefixime...

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2004
Miguel Blanco Nora L Padola Alejandra Krüger Marcelo E Sanz Jesús E Blanco Enrique A González Ghizlane Dahbi Azucena Mora María Isabel Bernárdez Analía I Etcheverría Guillermo H Arroyo Paula M A Lucchesi Alberto E Parma Jorge Blanco

A total of 153 Shiga-toxin-producing Escherichia coli (STEC) isolates from feces of cattle and beef products (hamburgers and ground beef) in Argentina were characterized in this study. PCR showed that 22 (14%) isolates carried stx1 genes, 113 (74%) possessed stx2 genes and 18 (12%) both stx1 and stx2. Intimin (eae), enterohemolysin (ehxA), and STEC autoagglutinating adhesin (saa) virulence gene...

2014
Angelika Miko Marta Rivas Adriana Bentancor Sabine Delannoy Patrick Fach Lothar Beutin

More than 400 serotypes of Shiga toxin-producing Escherichia coli (STEC) have been implicated in outbreaks and sporadic human diseases. In recent years STEC strains belonging to serogroup O178 have been commonly isolated from cattle and food of bovine origin in South America and Europe. In order to explore the significance of these STEC strains as potential human pathogens, 74 German and Argent...

2016
Gian Marco Baranzoni Pina M. Fratamico Jayanthi Gangiredla Isha Patel Lori K. Bagi Sabine Delannoy Patrick Fach Federica Boccia Aniello Anastasio Tiziana Pepe

Similar to ruminants, swine have been shown to be a reservoir for Shiga toxin-producing Escherichia coli (STEC), and pork products have been linked with outbreaks associated with STEC O157 and O111:H-. STEC strains, isolated in a previous study from fecal samples of late-finisher pigs, belonged to a total of 56 serotypes, including O15:H27, O91:H14, and other serogroups previously associated wi...

2015
Molly Maitland Leeper MOLLY M. LEEPER Molly Leeper Molly M. Leeper

Molly M. Leeper Trends in Toxin Profiles of Human Shiga Toxin-Producing Escherchia coli (STEC) O157 Strains, United States, 1996-2008 (Under the direction of Dr. Karen Gieseker, faculty member) Shiga toxin-producing E. coli (STEC) cause diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome (HUS). All STEC produce one or both of two Shiga toxins, Stx1 and Stx2. STEC strains that produce S...

Journal: :iranian journal of microbiology 0
pantea mohammadi medical biology research center, university of medical sciences, kermanshah, iran. ramin abiri department of microbiology, faculty of medicine, university of medical sciences, kermanshah, iran. mansour rezaei department of statistics and epidemiology, faculty of health, university of medical sciences, kermanshah, iran. siavosh salmanzadeh-ahrabi department of microbiology, alzahra university, tehran, iran.

background and objectives: infectious diarrhoeal diseases are great problem throughout the world and are responsible for considerable morbidity and mortality. shiga toxin-producing escherichia coli (stec) is a major cause of gastroenteritis that may be complicated by hemorrhagic colitis (hc) or the hemolytic uremic syndrome (hus), which is the main cause of acute renal failure in children. food...

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