نتایج جستجو برای: ژنهای esbls
تعداد نتایج: 2312 فیلتر نتایج به سال:
INTRODUCTION While the Clinical and Laboratory Standards Institute (CLSI) recommends against routine screening for extended spectrum β-lactamases (ESBLs), knowledge of these data can provide valuable insights regarding epidemiology and drug therapy decisions. The purpose of this study was to compare the impact of minimum inhibitory concentration (MIC)-based screening versus phenotypic confirmat...
background clinical significance of extended-spectrum beta-lactamases (esbls) production in enterobacter spp. has not well been established. objectives this study was conducted to investigate the prevalence of esbls produced by enterobacter spp. in clinical isolates. materials and methods this descriptive cross-sectional study was performed during may 2010 to april 2012 in the city of sanandaj,...
BACKGROUND Extended-spectrum beta-lactamases (ESBLs) are a group of enzymes that hydrolyze antibiotics, including those containing new cephalosporins, and they are found in a significant percentage of Escherichia coli and Klebsiella pneumoniae strains. With the widespread use of antibiotics, difficulties with infection therapy caused by drug resistant organisms, especially those that have acqui...
Abstract: Background and objectives: Antibiotic resistant to Antimicrobial agents is one of the most important concern in hospitals, which can lead to increased costs, treatment fails and mortality rates. The aim of this study was identification of Gram-negative bacilli resistant to extended-spectrum β-lactamase Enzymes (ESBLs) and determination of the effect of silver nanoparticles on the...
چکیده: مقدمه: یکی از روشهای نگهداری جنین، انجماد است ولی انجماد خود میتواند سبب از دست رفتن جنین و ایجاد ناهنجاری کروموزومی شود که این امر باعث گرایش محققان به تکنیک هایی برای حفظ جنین در دمای0 تا 10 درجه سانتیگراد بصورت کوتاه مدت شده است. هدف این پژوهش، بررسی اثر کوتاه مدت دمای 4 درجه سانتیگراد بر پروفایل بیان ژنهای انتقال دهنده های مونوکربوکسیلیک 1،2، 3 و4 در جنین چهار سلولی موش است. روش کا...
سابقه و هدف: انواع مختلفی از بتالاکتامازهای وسیعالطیف (esbls) از قبیل blatem و blashv به طور برجسته در سویههای کلبسیلا حضور دارند. هدف از این مطالعه، بررسی فراوانی ژنهای blatem و blashv در سویههای کلبسیلا پنومونیه و اکسیتوکا مولد بتالاکتامازهای وسیعالطیف جداسازی شده از نمونه های ادراری در کرج بود. روش بررسی: از 100 ایزوله کلبسیلای جداسازی شده از نمونههای ادراری، باکتریهای مولد esbls...
s of the International Congress of Chemotherapy, Birmingham, England, 1999). In 1989 an outbreak of multiresistant Salmonella enterica serovar Typhimurium infections occurred in 12 of 14 Argentinian provinces. From these isolates a new non-SHV, non-TEM ESBL named CTX-M-2 was identified (26, 28, 29, 333). Organisms with CTX-M-2 have spread throughout many parts of South America (333). Other CTX-...
Twelve ceftazidime-resistant isolates of the family Enterobacteriaceae (11 Klebsiella pneumoniae isolates and 1 Escherichia coli isolate) were collected in 1995 from three Polish hospitals located in different cities. All were identified as producers of extended-spectrum beta-lactamases (ESBLs). Detailed analysis of their beta-lactamase contents revealed that six of them expressed SHV-5-like ES...
This review covers the recent findings on extended spectrum beta-lactamases (ESBL) pathogens, focusing on the epidemiology of infection due to this pathogen. Use of ESBL is growing rapidly and widely. CTX-M-15 producing ESBL Escherichia coli is the most commonly encountered in clinical practice. In general, ESBL infections are represented by urinary tract infections, but they can also cause fat...
BACKGROUND The incidence of Proteus mirabilis antimicrobial resistance, especially that mediated by extended-spectrum β-lactamases (ESBLs), has increased. We investigated the impact of ESBL production on the mortality of patients with P. mirabilis bacteremia in Korea. METHODS Patients diagnosed with P. mirabilis bacteremia between November 2005 and December 2013 at a 2000-bed tertiary care ce...
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