نتایج جستجو برای: o157 verotoxigenic

تعداد نتایج: 6070  

2015
Mohankandhasamy Ramasamy Dong Kee Yi Seong Soo A An

Escherichia coli O157:H7 (O157) is a Gram negative and highly virulent bacteria found in food and water sources, and is a leading cause of chronic diseases worldwide. Diagnosis and prevention from the infection require simple and rapid analysis methods for the detection of pathogens, including O157. Endogenous membrane peroxidase, an enzyme present on the surface of O157, was used for the color...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1391

بیماری های ناشی از مصرف غذاهای آلوده به باکتری های عامل فساد و بیماری زا به طور مستقیم در سلامت جامعه نقش دارد. پپتیدهای ضدمیکروبی از جمله هموپلیمرهای کاتیونی مانند پلی-ال-لیزین و ترکیبات غنی از آرژینین مانند پروتامین برای کنترل میکروب ها اخیراً به عنوان یک روش جدید کنترل میکروبی در صنایع غذایی مورد استفاده قرار می گیرند. فعالیت ضدمیکروبی پلی-ال-آرژینین به عنوان یک پپتید ضدمیکروبی کاتیونی کمتر م...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده علوم پایه 1388

باکتری اشرشیاکلی o157: h7 (e.coli o157: h7)، از زیر گروه اشرشیاکلی های خونریزی دهنده داخلی انترو هموراژیک {enterohemorrhagic escherichia coli (ehec) } می باشد. این باکتری تولید کننده ی توکسینی شبیه شیگا توکسین (shiga-like toxin) می باشد که در ایجاد اسهال-های خونی، غیر خونی و سندروم یورمی همولیتیک نقش دارد. سندروم یورمی همولیتیک یک عامل مهم ناتوانی کلیوی در کودکان و بزرگ سالان است. این باکتری بر...

2016
Patricia Garvey Anne Carroll Eleanor McNamara André Charlett Kostas Danis Paul J. McKeown

, although no specific lesions compatible with this infectious agent were observed. A pool containing all morbillivirus-positive PCR amplicons for animals 1 and 2 (GenBank accession nos. KT006289 and KT006290), a PCR amplicon for the brain sample from animal 2 (GenBank accession no. KT006291), and a PCR amplicon for the larynx from animal 3 were se-quenced. A BLAST search (http://www.ncbi.nlm.n...

Journal: :Environmental microbiology 2002
Joel V Gagliardi Jeffrey S Karns

Soil microcosms were inoculated with Escherichia coli O157:H7 to test persistence in fallow soil, on roots of cover crops and in presence of manure. In fallow soils, E. coli O157:H7 persisted for 25-41 days, on rye roots for 47-96 days and on alfalfa roots, in a silt loam soil, for 92 days whereas on other legumes persistence ranged from 25-40 days, similar to fallow soil. Manure did not seem t...

2014
Abasiofiok M. Ibekwe Jincai Ma David E. Crowley Ching-Hong Yang Alexis M. Johnson Tanya C. Petrossian Pek Y. Lum

Shiga toxin-producing E. coli O157:H7 and non-O157 have been implicated in many foodborne illnesses caused by the consumption of contaminated fresh produce. However, data on their persistence in soils are limited due to the complexity in datasets generated from different environmental variables and bacterial taxa. There is a continuing need to distinguish the various environmental variables and...

Journal: :iranian journal of microbiology 0
alireza koochakzadeh department of pathobiology, faculty of veterinary medicine, garmsar branch, islamic azad university, garmsar-iran and department of microbiology, faculty of veterinary medicine, university of tehran, tehran-iran. mahdi askari-badouei department of pathobiology, faculty of veterinary medicine, garmsar branch, islamic azad university, garmsar-iran. emad mazandarani department of pathobiology, faculty of veterinary medicine, garmsar branch, islamic azad university, garmsar-iran. omid madadgar department of microbiology, faculty of veterinary medicine, university of tehran, tehran-iran.

background and objectives: a diverse group of escherichia coli are known as enterohemorrhagic escherichia coli (ehec) including o157:h7 and non-o157 ehec. enterohemorrhagic strains are related to severe clinical conditions in humans including hemorrhagic colitis and hemolytic uremic syndrome, and most of the recorded outbreaks occurred due to o157: h7 e. coli . the aim of the present study was ...

Journal: :Vector borne and zoonotic diseases 2005
Lisa M Durso Kaye Reynolds Nate Bauer James E Keen

We report an agricultural fair-associated shiga-toxigenic Escherichia coli O157:H7 (STEC O157) outbreak that was unusual in that it affected both livestock exhibitors and visitors. Twenty-five human cases of STEC O157 infection were detected after the Fort Bend County Fair in Rosenberg, Texas, which ran from 9/26/03 to 10/04/03. Seven cases were culture-confirmed. There were four hemolytic urem...

Journal: :Epidemiology and infection 2016
A Kuehne M Bouwknegt A Havelaar A Gilsdorf P Hoyer K Stark D Werber

Shiga toxin-producing Escherichia coli (STEC) is an important cause of gastroenteritis (GE) and haemolytic uraemic syndrome (HUS). Incidence of STEC illness is largely underestimated in notification data, particularly of serogroups other than O157 ('non-O157'). Using HUS national notification data (2008-2012, excluding 2011), we modelled true annual incidence of STEC illness in Germany separate...

Journal: :Journal of microbiological methods 2006
Andrew G Gehring David M Albin Peter L Irwin Sue A Reed Shu-I Tu

Escherichia coli O157:H7, a major foodborne pathogen, has been associated with numerous cases of foodborne illnesses. Rapid methods have been developed for the screening of this pathogen in foods in order to circumvent timely plate culture techniques. Unfortunately, many rapid methods are presumptive and do not claim to confirm the presence of E. coli O157:H7. The previously developed method, e...

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