نتایج جستجو برای: escherichia
تعداد نتایج: 126679 فیلتر نتایج به سال:
The transformation frequency of Escherichia coli C-600, continuously cultivated in a chemostat operated at constant dilution rate, increased with increase in agitation rate (impeller speed). Cell counts at each impeller speed remained approximately constant. The phenomenon correlated with changes in mean cell volume associated with the changes in agitation rate.
The aim of this study was to isolate Escherichia coli from chickens and to determine the presence of the eaeA gene, a virulence factor detected in Escherichia coli, in the isolates by polymerase chain reaction (PCR). Different chicken organs (lung, liver and spleen) were inoculated onto blood agar and biochemical tests were performed on the suspicious isolates. Escherichiacoliwas isolated from ...
Background & Objectives: Escherichia coli is the most common agent of urinary tract infections, with P fimbriae as the most important virulence factor. Uropathogenic Escherichia coli expresses various types of adhesive genes such as P fimbriae and pyelonephritis-associated pili (PAP), which mediate the binding to the surface of epithelial cells in the urinary tract. This study aimed to iden...
Abstract Background and Objective: Escherichia coli is the most common cause of urinary tract infections in children and the leading cause of intra-abdominal infections (peritonitis and abscess) followed intestinal injuries. Urinary tract infection, including cystitis and pyelonephritis, is a common childhood infection. E. coli causes more than 90 percent of the community acquired and 50% of ho...
The antigenic relatedness of Escherichia coli O157 and four sorbitol-negative species of the genus Escherichia was examined. Isolates of Escherichia hermannii, E. fergusonii, E. vulneris, and E. blattae were tested in the tube agglutination assay by using polyclonal antisera and in the slide agglutination assay by using latex reagents. Only four isolates (17%) of E. hermannii exhibited serologi...
Clinical infections attributed to carbapenemase-producing bacteria are a pressing public health concern owing to limited therapeutic options and linked antimicrobial resistance. In recent years, studies have reported the emergence and spread of carbapenemase-producing Enterobacteriaceae and their public health impact. This has been closely followed by the global dissemination of highly resistan...
Typical and atypical enteropathogenic Escherichia coli (EPEC) strains differ in several characteristics. Typical EPEC, a leading cause of infantile diarrhea in developing countries, is rare in industrialized countries, where atypical EPEC seems to be a more important cause of diarrhea. For typical EPEC, the only reservoir is humans; for atypical EPEC, both animals and humans can be reservoirs. ...
چکیده در سال های اخیر تولید مولکول های پپتیدی به دلیل نقش اساسی آنها در فرایندهای رشد و تمایز سلول های گیاهی و جانوری و همچنین اهمیت دارویی و تجاری مورد توجه روزافزون بوده است. تولید پپتید هایی با مقادیر زیاد و خلوص بالا که به منظور مطالعات in vitro، کنترل فیزیولوژی سلولی یا به عنوان دارو مد نظر هستند به دو شیوه ی سنتز شیمیایی و بیان تراریختی انجام می پذیرد. از آنجا که بیان مستقیم پپتید های کو...
BACKGROUND AND OBJECTIVES Diarrheagenic Escherichia coli (DEC) strains are a major cause of intestinal syndromes in the developing countries. The aim of this study was to determine the prevalence of enterotoxigenic E. coli (ETEC) and enteroinvasive E. coli (EIEC) in relation to phylogenetic background from patients with diarrhea. MATERIALS AND METHODS A total of 110 E. coli isolates were obta...
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