نتایج جستجو برای: o157h7
تعداد نتایج: 25 فیلتر نتایج به سال:
Herbal antimalarials still remain an alternative to our traditional communities who can not afford orthodox antimalarials. This study was aimed at investigating the microbial quality of six herbal antimalarials using standard microbiological methods. Of the six preparations analyzed, "schnapps", palm wine and water were the media of preparation; the water base preparations recorded higher micro...
BACKGROUND Shiga-like toxin 2 (Stx2) is one of the most important virulence factors in enterohaemorrhagic Escherichia coli (E. coli) strains such as O157H7. Subtypes of Stx2 are diverse with respect to their sequence, toxicity, and distribution. The most diverse Stx2 subtype, Stx2f, is difficult to detect immunologically, but is becoming more frequently associated with human illness. METHODS ...
From 1948 to 1988, there were 6 confirmed foodborne disease outbreaks in the U.S. transmitted with domestically produced hard cheeses as the food vehicle. Various research reports have raised concerns about the public health protection provided by the current 60-day aging period in the manufacture of hard cheeses made with unpasteurized milk. The objective of this study was to investigate the a...
From 1948 to 1988, there were 6 confirmed foodborne disease outbreaks in the U.S. transmitted with domestically produced hard cheeses as the food vehicle. Various research reports have raised concerns about the public health protection provided by the current 60-day aging period in the manufacture of hard cheeses made with unpasteurized milk. The objective of this study was to investigate the a...
background and objectives: the most common serotype of enterohaemorrhagic esherichia coli group or shiga-toxin-producing e. coli is o157:h7. domestic and wild ruminants are regarded as the main natural reservoirs. o157:h7 serotype is the major cause of gastrointestinal infections in developed countries. in this study was conducted to survey on the toxigenic e. coli o157: h7 strains in milk of i...
in this research the essential oils (eos) of kelussia odoratissima and teucrium polium were extracted by hydrodistillation. extracted essential oils constituents were analyzed by gas chromatograph (gc) and gc/mass spectrometry and the essential oils constituents identified according to retention time and mass spectrum. then minimum inhibitory concentration (mic) and minimum bactericidal concent...
یکی از پاتوژنهای مهم ایجادکننده کولیت هموراژیک و نشانگان همولیتیک اورمیک در انسان باکتری اشرشیاکلی هموراژیک سویه O157H7 میباشد. دامها اصلیترین مخزن این باکتری میباشند. دو فاکتور پروتئینی با اهمیت در کلونیزاسیون باکتری در اپیتلیوم روده EspA و Intimin هستند که باعث ایجاد آسیبهای تخریبی بهواسطه اتصال میگردند. این پروتئینها توسط جزایر بیماریزایی LEE (Locus of Enterocyte Effacement) کد می...
Abstract Background and objectives :Epidemic dysentery, which can be caused by different organisms, is a major problem in developing countries. The cause variability and drug resistance make the treatment difficult. This study was carried out to determine the prevalence and antimicrobial susceptibility patterns of Shigella in Isfahan reference laboratory. Materials and Methods: In this descript...
زمینه و هدف: مطالعه حاضر با هدف تعیین آلودگی سبزیجات به اشریشیا کلی انتروهموراژیک و تعیین سویه O157H7 بعلت تولید اگزوتوکسین stx (شیگا توکسین) و اهمیت آن در ایجاد بیماریهایی همچون کولیت هموراژیک و سندرم اورمی همولتیک در انسان صورت گرفت. روش بررسی: در این پژوهش تعداد 256 نمونه سبزیجات تازه شامل کاهو، کلم و سبزی خوردن طی مدت 8 ماه از 4 مرکز عمده فر...
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