نتایج جستجو برای: blashv
تعداد نتایج: 429 فیلتر نتایج به سال:
background emerging antibacterial resistance rates and extended-spectrum-β-lactamase producing escherichia coli recovered from urinary tract infections (uti) is an increasing problem in different regions, limiting therapeutic options. objectives the aim of this study was the detection of blatem, blashv and blactx-m genes among escherichia coli strains causing urinary tract infection in children...
چکیده زمینه و هدف: پسودوموناس ائروژینوزا یکی از مهم ترین باکتری های بیماری زای ایجاد کننده ی عفونت های بیمارستانی است. در این مطالعه الگوی حساسیت آنتی بیوتیکی و فراوانی بتالاکتامازهای وسیع الطیف در پسودوموناس ائروژینوزای جدا شده از نمونه های بالینی و محیطی به روش فنوتیپی و ژنوتیپی مورد بررسی قرار گرفت. روش بررسی: این مطالعه ی توصیفی بر روی 100 سویه پسودوموناس ائروژینوزا جدا شده از نمونه های مخت...
Methods A total of 22 isolates, K. pneumoniae (n=20), Escherichia coli (n=1) and Enterobacter aerogenes (n=1), were collected from a university hospital, in Lisbon, Portugal. MIC were determined by Etest and interpreted according to Clinical and Laboratory Standards Institute guidelines. PCR was performed with primers designed to amplify blaSHV, blaTEM and blaKPC genes. Molecular typing was per...
We sequenced a novel conjugative blaKPC-2-harboring IncN plasmid, pYD626E, from an Escherichia coli sequence type 648 strain previously identified in Pittsburgh, Pennsylvania. pYD626E was 72,800 bp long and carried four β-lactamase genes, blaKPC-2, blaSHV-12, blaLAP-1, and blaTEM-1. In addition, it harbored qnrS1 (fluoroquinolone resistance) and dfrA14 (trimethoprim resistance). The plasmid pro...
Extended-spectrum cephalosporins (ESC) are an important drug class for treating severe Salmonella infections. We screened the human collection from the National Antimicrobial Resistance Monitoring System 2000 for ESC resistance mechanisms. Of non-Typhi Salmonella tested, 3.2% (44/1,378) contained blaCMY genes. Novel findings included blaCMY-positive Escherichia coli O157:H7 and a blaSHV-positiv...
Background and purpose: Production of beta-lactamase enzymes by bacteria, especially Extended-spectrum β-lactamases (ESBLs) is one of the major problems worldwide. ESBLs are mostly located on bacterial plasmids and it is recognized that SHV, TEM, and CTX-M are prevailing among them. The aim of this study was to determine the ability to produce ESBLs genes based on molecular method among non-fer...
Clinical strains of Enterobacter were isolated from Cumana's Central Hospital in Venezuela, and classified as E. cloacae (21), E. aerogenes (7), E. intermedium (1), E. sakazakii (1) and three unclassified. The strains showed high levels of resistance, especially to SXT (58.1%), CRO (48.8%), CAZ (46.6%), PIP (46.4%), CIP (45.2%) and ATM (43.3%). This is the first report for South America of blaV...
Methods: E. coli was isolated from 388 broiler chicken caecal samples from 22 abattoirs and from boot swabs from 442 turkey flocks over successive 1 year periods. CHROMagar ECC with and without cephalosporin antibiotics was used as isolation medium and the chicken study also used CHROMagar CTX. ESBL phenotype isolates were tested for the presence of blaCTX-M, blaOXA, blaSHV, blaTEM and ampC gen...
The VITEK 2 (bioMérieux Inc., Hazelwood, MO) automated system employs an advanced expert system (AES) analyzing antimicrobial susceptibility test results according to the bacterial species (2). According to the AES, the piperacillin susceptibilities of all Klebsiella spp. are converted to resistance even though the automated MICs determined for their isolates are low. In contrast, other automat...
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