نتایج جستجو برای: stec

تعداد نتایج: 1359  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1390

چکیده: بیماری های اسهالی عفونی به عنوان یک مسئله مهم در سراسر جهان مطرح می باشند و تاکنون مرگ ومیر فراوانی را به دنبال داشته اند. اشریشیا کلی های مولد اسهال از مهمترین عوامل این بیماری ها بوده که سبب اسهال های اپیدمیک و اندمیک در سراسر جهان شده اند. در بین شش پاتوتیپی که برای اشریشیا کلی های مولد اسهال در نظر گرفته می شود پاتوتیپ های اشریشیا کلی مولد شیگا توکسین (stec) و اشریشیا کلی بیماریز...

2016
Sandra C. Lorenz Michael L. Kotewicz Maria Hoffmann Narjol Gonzalez-Escalona Markus Fischer Julie A. Kase

Shiga toxin-producing Escherichia coli (STEC) strains are important foodborne pathogens associated with human disease. Most disease-associated STEC strains carry the locus of enterocyte effacement (LEE); however, regularly LEE-negative STEC strains are recovered from ill patients. Few reference sequences are available for these isolate types. Here, we report here the complete genome sequences f...

2015
Laura Ercoli Silvana Farneti David Ranucci Stefania Scuota Raffaella Branciari

Shiga toxin-producing Escherichia coli (STEC) can cause severe clinical diseases in humans, such as haemorrhagic colitis (HC) and haemolytic-uremic syndrome (HUS). Although ruminants, primarily cattle, have been suggested as typical reservoirs of STEC, many food products of other origins, including pork products, have been confirmed as vehicles for STEC transmission. Only in rare cases, pork co...

2004
R. NOVOTNA P. ALEXA J. HAMRIK A. MADANAT J. SMOLA A. CIZEK

Ninety-three rectal swabs of lambs and young goats from two extensively and two intensively managed herds in Jordan were taken and examined for Shiga toxin-producing Escherichia coli (STEC). The bacteriological examination included the preenrichment of rectal swabs in EC broth with novobiocin, and a subsequent parallel isolation on enterohemolysin agar and immunomagnetic separation with cultiva...

2017
Hidenori KABEYA Shingo SATO Shinya ODA Megumi KAWAMURA Mariko NAGASAKA Masanari KURANAGA Eiji YOKOYAMA Shinichiro HIRAI Atsushi IGUCHI Tomoe ISHIHARA Toshiro KUROKI Tomoko MORITA-ISHIHARA Sunao IYODA Jun TERAJIMA Makoto OHNISHI Soichi MARUYAMA

This study examined the potential pathogenicity of Shiga toxin-producing Escherichia coli (STEC) in feces of sika deer by PCR binary typing (P-BIT), using 24 selected STEC genes. A total of 31 STEC strains derived from sika deer in 6 prefectures of Japan were O-serotyped and found to be O93 (n=12), O146 (n=5), O176 (n=3), O130 (n=3), O5 (n=2), O7 (n=1), O96 (n=1), O116 (n=1), O141 (n=1), O157 (...

Journal: :Journal of clinical microbiology 1999
A W Paton M C Woodrow R M Doyle J A Lanser J C Paton

Shiga toxigenic Escherichia coli (STEC) strains are a diverse group of organisms capable of causing severe gastrointestinal disease in humans. Within the STEC family, certain strains appear to have greater virulence for humans. STEC strains carrying eae and belonging to serogroup O157 or O111 have been responsible for the vast majority of outbreaks of STEC disease reported to date. Here we desc...

Journal: :Clinics in laboratory medicine 2010
John M Hunt

Shiga toxin-producing Escherichia coli (STEC) are important enteric pathogens worldwide, causing diarrhea with or without blood visibly present and hemolytic uremic syndrome. STEC are unique among diarrheogenic E coli in producing Shiga toxin type 1 and type 2, the virulence factors responsible for bloody diarrhea and hemolytic uremic syndrome. Cattle and other ruminants are the natural reservo...

Journal: :Emerging Infectious Diseases 1998
L. Beutin S. Zimmermann K. Gleier

We investigated different types of Shiga toxin-producing Escherichia coli (STEC) not belonging to serogroup O157 for their role as human pathogens. Non-O157 STEC isolated from 89 human patients in Germany were characterized according to serotypes, virulence markers, and association with human illness. EaeA-positive STEC were isolated from 54 (60.7%) of the patients and were frequently associate...

2013
Xiangning Bai Ailan Zhao Ruiting Lan Youquan Xin Hui Xie Qiong Meng Dong Jin Bo Yu Hui Sun Shan Lu Jianguo Xu Yanwen Xiong

Shiga toxin (Stx)-producing Escherichia coli (STEC) are recognized as important human pathogens of public health concern. Many animals are the sources of STEC. In this study we determined the occurrence and characteristics of the STEC in yaks (Bos grunniens) from the Qinghai-Tibetan plateau, China. A total of 728 yak fecal samples was collected from June to August, 2012 and was screened for the...

2016
Zachary R. Stromberg Rodney A. Moxley

Detection of Shiga toxin-producing Escherichia coli (STEC) in complex sample matrices remains challenging. In an attempt to improve detection, nonselective and selective enrichment broths were compared as follows: (1) trypticase soy broth (TSB) was compared with TSB plus novobiocin, vancomycin, rifampicin, bile salts, and potassium tellurite (TSB-NVRBT) for supporting growth of STEC in pure cul...

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