نتایج جستجو برای: bla shv
تعداد نتایج: 3892 فیلتر نتایج به سال:
Extended-spectrum β-lactamase (ESBL) production is an important resistance mechanism among clinical isolates of Enterobacter cloacae. TEM, SHV, and CTX-M are the most common ESBL genotypes among Enterobacter spp. The main aims of this study were to determine the antimicrobial susceptibility pattern and to detect ESBL-encoding genes as well as intI1 genes. One hundred twenty isolates of E. cloac...
We report the case of a pediatric patient with a Salmonella enterica serotype Infantis infection. Detailed microbiological investigation revealed that this isolate carries four beta-lactamase genes (bla(TEM-1b) variant, bla(SHV-5), bla(CTX-M-15), and bla(CMY-2)) conferring resistance to all beta-lactams but imipenem. This is the first report of a Salmonella isolate with CTX-M and AmpC enzymes o...
beta-Lactamase production was investigated in cultures of 25 Klebsiella pneumoniae isolates isolated at a hospital in Durban, South Africa, in 1994 and 1996. Twenty of these isolates gave ceftazidime MIC/ceftazidime plus clavulanate MIC ratios of >/=8, implying production of extended-spectrum beta-lactamases (ESBLs), and DNA sequencing identified an ESBL gene (bla(TEM-53)) in a further two isol...
Two cases of pulmonary infection due to strains of multidrug-resistant Klebsiella pneumoniae were investigated. Beta-lactamase determinants, such as bla(IMP-4) and bla(SHV-12), and the 16S rRNA methyltransferase-encoding gene armA were detected in these plasmid-bearing organisms. The integron-borne bla(IMP-4) and armA contained intervening sequences highly related to those of a Vibrio cholerae ...
OBJECTIVES Recently, resistance to extended-spectrum cephalosporins due to acquired beta-lactamases has been reported in Pseudomonas aeruginosa. The aim of this study was to investigate the prevalence of Ambler class A and D beta-lactamases and their extended-spectrum derivatives and antimicrobial susceptibilities of P. aeruginosa isolated from various parts of Korea. METHODS A total of 252 c...
زمینه و هدف: اشرشیاکلی، یک باکتری فرصتطلب گرم منفی است که باعث عفونتهای شایع بیمارستانی ازجمله پنومونی، سپتیسمی، مننژیت، اسهال، باکتریمیو ...، میشود. مقاومت آنتیبیوتیکی بهعنوان یک مشکل جدی برای سلامت انسان مطرح است، بهگونهای که سازمان بهداشت جهانی، سال 2011 را بهعنوان سال مقاومت آنتیبیوتیکی درنظرگرفت. یکی از دلایل این مقاومتها تولید بتالاکتامازها با طیف وسیع (ESBLs) بوده که قادر به ...
زمینه و هدف: اشرشیاکلی، یک باکتری فرصتطلب گرم منفی است که باعث عفونتهای شایع بیمارستانی ازجمله پنومونی، سپتیسمی، مننژیت، اسهال، باکتریمیو ...، میشود. مقاومت آنتیبیوتیکی بهعنوان یک مشکل جدی برای سلامت انسان مطرح است، بهگونهای که سازمان بهداشت جهانی، سال 2011 را بهعنوان سال مقاومت آنتیبیوتیکی درنظرگرفت. یکی از دلایل این مقاومتها تولید بتالاکتامازها با طیف وسیع (ESBLs) بوده که قادر به ...
Plasmid-encoded resistance to broad-spectrum cephalosporins and aztreonam is becoming a widespread phenomenon in clinical medicine. These antibiotics are inactivated by an array of different extended-spectrum beta-lactamases (ESBLs) which have evolved by point mutations of parental TEM or SHV beta-lactamases. In a previous study conducted during 1994-1995, SHV-2, SHV-2a and SHV-5 beta-lactamase...
The prevalence of ESBL has been increasing worldwide. In this study, we investigated the molecular characteristics of ESBL among clinical isolates of Escherichia coli from a Japanese tertiary hospital. A total of 71 consecutive and nonduplicate clinical isolates of ESBL-positive E. coli collected at Tohoku University Hospital between January 2008 and March 2011 were studied. The antimicrobial s...
BACKGROUND Pseudomonas aeruginosa remains a leading cause of severe wound infection and mortality in burn patients. OBJECTIVES The current study aimed to determine the prevalence of Ambler class A and D β-lactamases among P. aeruginosa isolated from infected burn injuries in Tehran, Iran. PATIENTS AND METHODS Bacteriological samples were taken from burn patients with clinical symptoms of bu...
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