نتایج جستجو برای: باکتری e coli
تعداد نتایج: 1135805 فیلتر نتایج به سال:
Background and Objective: Urinary tract infection (UTI) is one of the most prevalent bacterial infections and Escherichia coli is the most common cause of it. The aim of this study was determination of the antibiotic resistance of E. coli isolated from urine of adult patients (≥15 years old) harboring UTI symptoms at Pars General Hospital in Tehran, Iran, for evaluating the most effective drug ...
Background & Objective: Escherichia coli (E. coli) is considered to be the most common cause of urinary tract infections (UTIs) worldwide. Due to the recent rise in bacterial resistance to antibiotics and the appearance of multidrug-resistant E. coli, treatment options have been significantly limited, thus increasing the cost of treatment as well as morbidity and mortality rates, especially in ...
کلون کردن و بیان ژن ha ویروس آنفلوانزای پرندگان تحت تیپ h9n2 در حامل های باکتریایی لاکتوکوکوس لاکتیس
ویروس آنفلوانزای پرندگان تحت تیپ h9n2، یکی از معضلات مهمی است که صنعت طیور ایران با آن روبرو است. یکی از راه کارهای مهم مقابله با آن استفاده از واکسن است ولی خصوصیاتی مانند پر زحمت بودن و تزریقی بودن استفاده از آن را در مزارع طیور مشکل ساخته است. بنابراین جایگزینی آن یا واکسن کارا و مناسب لازم به نظر می رسد. در این مطالعه قسمتی از ha1 و ha2 ژن ha ویروس h9n2، که محل-های آنتی ژنیک ویروس را کد می ...
Background: Various strains of Escherichia coli (E. coli) are known as major causes of intestinal and extraintestinal infections in humans and various animal species. Molecular methods are important for the identification of bacterial isolates and nucleotide sequence variations, as well as information on tracking bacterial agents related to the outbreaks, the frequency of the bacterial genetic ...
background:the bacterial contamination of fertile eggs isthe most common cause of embryonic death in ostrich hatcheryunits leading to financial loss in ostrich industry. objectives:the aim of this research was to investigate the bacterialcontamination status, with emphasis on escherichia coli, ofostrich hatcheries and the antimicrobial resistance profile ofisolated escherichia coli. methods:ato...
conclusions the results indicate that the rates of esbls are high in urine e. coli and k. pneumoniae isolates from tehran hospitals. also this study indicates that the urine isolates from male patients are significantly more resistant than the female isolates. materials and methods a total of 190 e. coli and k. pneumoniae isolates were collected from patients’ urine samples in hospitals from te...
Background: Escherichia coli (E. coli) is one of the most important infectious agents in patients undergoing prostate biopsy. It belongs to a large family of gram-negative rods, Enterobacteriaceae. This family includes members of the normal flora of the intestine that are only occasionally pathogenic. Recent considerations of rectal colonization with fluoroquinolone-resistant E. coli shows the ...
گلایفوسیت[n-(phosphonomethyl) glycine] علف کشی غیر انتخابی است که بیشتر از 30 سال در مدیریت علف های هرز مورد استفاده قرار گرفته است. گلایفوسیت از فعالیت آنزیم epsps (5-enolpyruvylshikimate-3-phosphate synthase) که آنزیمی کلیدی در بیوسنتز اسیدهای آمینه حلقوی است ممانعت می کند. توالی بهینه شده ژن تجزیه کننده گلایفوسیت به نام گلایفوسیت اکسید ردوکتاز به صورت مصنوعی ساخته شده است و در تحقیق حاضر ب...
to determine the contamination of traditional cheeses to e. coli o157:h7 this study was conducted in chaharmahal and bakhtiari province. two hundred cheeses samples were obtained randomly and bacteriological examinations were done on all isolates, by culture in selective enrichment media and after that, selective plating. suspected colonies were examined with o and h antisera for identification...
shiga toxin-producing escherichia coli (stec) are food-borne pathogens primarily associated with the consumption of contaminated ground beef and are an important food safety concern worldwide. stec has been found to produce a family of related cytotoxins known as shiga toxins (stxs). shiga toxins have been classified into two major classes, stx1 and stx2. a single strains of stec can produce st...
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