نتایج جستجو برای: 47 out of 105 e coli isolates 448 contained blactx
تعداد نتایج: 21698598 فیلتر نتایج به سال:
The purpose of this study was to investigate the prevalence and genetic elements of oqxAB among Escherichia coli isolates from animals, retail meat, and humans (patients with infection or colonization) in Guangzhou, China. A total of 1,354 E. coli isolates were screened for oqxAB by PCR. Fifty oqxAB-positive isolates were further characterized by pulsed-field gel electrophoresis (PFGE), multilo...
Background: ESBLs are enzymes which are capable of hydrolysing penicillins, broad-spectrum cephalosporins and monobactams. They are generally derived from TEM and SHV-type enzymes. Materials and methods: We investigated the presence of TEM, SHV, CTX-M, OXA and IBC beta-lactamase genes by PCR in 300 E. coli, 130 Klebsiella spp., 100 P. aeruginosa ve 23 Enterobacter spp. isolated from various cli...
Background and purpose: Citrobacter species can cause opportunistic hospital-acquired infections and their treatment has become problematic following the acquisition of extended spectrum beta- lactamases (ESBLs). The purpose of this study was to determine the frequency of ESBL genes in clinical isolates in Kermanshah Imam Reza Hospital. Materials and methods: In this study, 70 Citrobacter isol...
To investigate the efficacy of fosfomycin against extended-spectrum β-lactamases (ESBL) producing Escherichia coli in Taiwan and the resistance mechanisms and characterization of human and pig isolates, we analyzed 145 ESBL-producing isolates collected from two hospitals (n = 123) and five farms (n = 22) in Taiwan from February to May, 2013. Antimicrobial susceptibilities were determined. Clona...
We aimed to analyze the antimicrobial resistance phenotypes and to elucidate the molecular mechanisms underlying resistance to cephalosporins, ciprofloxacin, and azithromycin in Salmonella enterica serovar Typhimurium isolates identified from patients with diarrhea in Shanghai. The isolates showed high rates of resistance to traditional antimicrobials, and 20.6, 12.7, and 5.5% of them exhibited...
Objectives: The aim of this study was to assess the clonal structure, virulence potential and antibiotic susceptibility of uropathogenic Escherichia coli (UPEC) isolates causing community acquired urinary tract infection (CAUTI) in unselected primary care patients in Switzerland. Methods: We performed multilocus sequence typing, virulence factor determination, and phenotypic and genotypic antim...
Antimicrobial-resistant bacteria and resistance determinants are of great concern to human veterinary medicine worldwide. Extended-spectrum ?-lactamase (ESBL)-producing resistant broad-spectrum cephalosporins. ESBL-producing isolates, including those carrying blaCTX, blaPER, blaVEB, blaGES, have been reported from rivers in several countries.1 In a study performed 2018, using next-generation se...
Colibacillosis caused by avian pathogenic Escherichia coli (APEC) is an economic threat to the poultry industry throughout the world. Some of the virulence genes may enhance the ability of E. coli isolates to grow in the tissues of broilers. The APEC strains are assigned to a few distinct phylogenetic groups. The purpose of the present study was to detect the virulence genes a...
The environmental spread of antibiotic-resistant bacteria has been recognised as a growing public health threat for which hospitals play a significant role. The aims of this study were to investigate the prevalence of antibiotic resistance and antibiotic resistance genes (ARGs) in Escherichia coli isolates from hospital wastewater in Vietnam. Wastewater samples before and after treatment were c...
Background & Aims: β-lactamase enzymes, the most important factor to antibiotic resistance among Gram-negative bacteria, is of beta-lactam family. Today, we experience increasing infection in the world and this is one of the emerging health problems in the world. CTX-M9 is a beta-lactamase resistance gene. The aim of this study was to determine the prevalence of ESBL producing Esc...
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