نتایج جستجو برای: باکتری اشریشیاکلی escherichia coli
تعداد نتایج: 166996 فیلتر نتایج به سال:
در بین نانوذرات، کمترین سمیت مربوط به نانوذرات طلا است و سنتز و اجتماع نانو مواد با استفاده از سیستم های بیولوژیک پاک، غیرسمی و سازگار با محیط زیست است. نانوذرات طلا به عنوان حامل آنتی بیوتیکی موجب افزایش غلظت دارو در محل عفونت شده و همچنین موجب کاهش سمیت دارو می شوند. کانژوگاسیون نانوذره-آنتی بیوتیک علاوه بر دارورسانی و فعالیت بهتر دارو، موجب کاهش سمیت دارو هم می شود. باکتری های بی هوازی به عل...
Enterohemorrhagic Escherichia coli (EHEC) with serotype O157:H7 is a major foodborne pathogen. Here, we report the draft genome sequence of EHEC O157:H7 strain MC2 isolated from cattle in France. The assembly contains 5,400,376 bp that encoded 5,914 predicted genes (5,805 protein-encoding genes and 109 RNA genes).
We investigated the prevalence of the virulence genes specific for five major pathogroups of diarrheagenic Escherichia coli (DEC) in primary cultures from feces of animals slaughtered for human consumption in Burkina Faso. For the study, 704 feces samples were collected from cattle (n = 304), chickens (n = 350), and pigs (n = 50) during carcass processing. The presence of the virulence-associat...
Growth kinetics for Escherichia coli O157:H7 in perilla leaves were compared to those of pathogenic E. coli strains, including enteropathogenic (EPEC), enterotoxigenic (ETEC), enteroinvasive (EIEC) and other enterohemorrhagic (EHEC) at 13, 17, 24, 30 and 36 °C. Models for lag time (LT), specific growth rate (SGR) and maximum population density (MPD) as a function of temperature were developed. ...
Virulence characteristics of diarrheal outbreak-associated Escherichia coli O55:NM, O126:NM, and O111:NM were examined. The E. coli O55:NM strains were atypical enteropathogenic E. coli (EPEC), while the E. coli O126:NM and O111:NM strains should be classified as enteroaggregative E. coli (EAggEC). The contributions of EPEC and EAggEC to the human disease burden in Japan might be significantly ...
انتروپاتوژنیک اشریشیا کلی (epec=enteropathogenic escherichia coli) به عنوان مهم ترین عامل اسهال در کودکان است. پاتوژنز انتروپاتوژنیک اشریشیاکلی که پاتوواری از اشریشیاکلی است لزیون های a/e (attaching and efacing) است که در بیوپسی روده بیمار نیز دیده می شود. این لزیون ها توسط ژن هایی کد می شود که روی جزیره ژنومی lee (locus of enterocyte effacement) قرار دارد. شناسایی epec با استفاده از تشخیص این ...
The recent paradigm shift in infectious disease diagnosis from culture-based to molecular-based approaches is exemplified in the findings of a national study assessing the detection of verotoxigenic Escherichia coli infections in Ireland. The methodologic changes have been accompanied by a dramatic increase in detections of non-O157 verotoxigenic E. coli serotypes.
Etiological diagnosis of diarrheal diseases may be complicated by their multi-factorial nature. In addition, Escherichia coli strains present in the gut can occasionally harbor virulence genes (VGs) without causing disease, which complicates the assessment of their clinical significance in particular. The aim of this study was to detect and quantify nine VGs (stx1, stx2, eae, aggR, ehxA, invA, ...
The genetic relationship among the Escherichia coli pathotypes was investigated. We used random amplified polymorphic DNA (RAPD) data for constructing a dendrogram of 73 strains of diarrheagenic E. coli. A phylogenetic tree encompassing 15 serotypes from different pathotypes was constructed using multilocus sequence typing data. Phylogram clusters were used for validating RAPD data on the clona...
We report here the draft genome sequences of enteroinvasive Escherichia coli (EIEC) O124:H30 strain M4163 isolated from imported French cheese and EIEC O143:H26 strain 4608-58. The assembled data determined that both strains contain multiple copies of the ipaH gene, as well as the pINV A form of the invasion plasmid.
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