نتایج جستجو برای: enterohaemorrhagic escherichia coli
تعداد نتایج: 153423 فیلتر نتایج به سال:
The 5' end of the major RNA transcript of the LEE1 operon of enterohaemorrhagic Escherichia coli contains ~170 bases before the AUG translation start codon of the first recognized gene, ler. This unusually long leader sequence carries three potential alternative AUG start codons. Using a lac fusion expression vector, we confirmed that the ler gene AUG is functional for translation initiation, a...
Extended-spectrum β-lactamases (ESBL’S) are a rapidly growing group of which have the ability to hydrolyze third generation antibiotics such as Cephalosporins and Aztreonam. The aim this study is determination virulence genes in ESBL- producing Escherichia. coli isolated from cabbage, spinach water leaf. but inhibited by Clavulanic Acid. randomised experimental design was used collect cabbage (...
Lactic acid bacteria (LAB) exert antagonistic activities against diverse microorganisms, including pathogens. In this work, we aimed to investigate the ability of LAB strains isolated from food produce biofilms and inhibit growth surface colonization Enterohaemorrhagic Escherichia coli (EHEC) O157:H7 at 10°C. The 100 EHEC NCTC12900 was evaluated in agar diffusion assays. Thirty-seven showed str...
Pathogenic Escherichia coli cause over 160 million cases of dysentery and one million deaths per year, whereas non-pathogenic E. coli constitute part of the normal intestinal flora of healthy mammals and birds. The evolutionary pathways underlying this dichotomy in bacterial lifestyle were investigated by multilocus sequence typing of a global collection of isolates. Specific pathogen types [en...
AIMS Bovine meat is the principal source of human contamination of attaching and effacing Escherichia coli, including enterohaemorrhagic E. coli O157. The aim was to study the prevalence of these strains on bovine carcasses in Algeria. METHODS AND RESULTS Two-hundred and thirty carcasses were swabbed and analysed by classical microbiological methods for total E. coli counts and for the presen...
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