نتایج جستجو برای: lactamases of tem
تعداد نتایج: 21181831 فیلتر نتایج به سال:
Background and purpose: Extended Spectrum Beta Lactamases (ESBLs) are one of the most important health care issues all over the world. Uropathogenesis are responsible for life threatening infections in children. In this study we aimed at investigating the epidemiology of CTX, TEM and VEB genes in pediatric UTI. Materials and methods: Urine samples were collected during six months in Sari Bou...
BACKGROUND Resistance to beta-lactams in Haemophilus influenzae is mostly due to the presence of TEM beta-lactamases. beta-Lactamase-negative ampicillin resistance (BLNAR) also occurs as a result of PBP3 modifications. BLNAR strains are particularly common in Japan and France, and strains with combined mechanisms of altered PBP3 and beta-lactamase (BLPACR) are emerging. Although the prevalence ...
A total of 113 blood culture isolates of Klebsiella pneumoniae from 10 hospitals in northern Taiwan were studied for SHV and TEM b-lactamase production. blaSHV was amplified from all isolates by PCR. TEM-type resistance, was found in 32 of the isolates and was of the TEM-1 type in all isolates. SHV-1, -2, -5, -11, and -12 and two novel enzymes were identified. These novel enzymes were designate...
Background: Beta- lactamase enzymes are the most important resistant factors to beta lactam antibiotics among gram negative bacteria. Nowadays, the prevalence of beta- lactamase infection is increasing worldwide and drawn the scientists attention as an important subject. Due to high prevalence of bacteria contained TEM beta lactamase and AmpC enzymes, using molecular methods especially designin...
TEM- or SHV-type extended-spectrum beta-lactamases(ESBLs) are of clinical concern in Europe and the United States, whereas bacterial strains producing such types of ESBLs had not been reported in Japan for many years. Toho-1, a different type class A ESBL, has been reported in 1995, in which any prototypical enzyme has not been identified so far. At present Toho-1 is the major ESBL in Japan, ho...
objective(s) resistance to the new generation of cephalosporins which is mediated by extended-spectrum beta-lactamases (esbls) has been found among escherichia coli isolates throughout the world. these resistance genes and their producers, the micro-organisms carrying beta-lactamases, are responsible for serious clinical and therapeutic problems among inpatients and it is necessary to pay more ...
INTRODUCTION Extended-spectrum beta-lactamases (ESBLs) are bacterial enzymes capable of hydrolyzing beta-lactams. The aim of this study was to describe the prevalence of TEM- and SHV-type ESBL-producing Klebsiella pneumoniae strains in Zahedan, Southeast Iran. METHODS A total of 170 non-repetitive K. pneumoniae strains were collected from patients referred to three teaching hospitals of Zahed...
Twenty-two Klebsiella pneumoniae and two K. oxytoca extended-spectrum beta-lactamase (ESBL)-producing isolates were collected in 1996 from patients in two pediatric wards of the University Hospital in Wrocław, Poland. Molecular typing has revealed that the K. pneumoniae isolates represented four different epidemic strains. Three kinds of enzymes with ESBL activity (pI values of 5.7, 6.0, and 8....
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