A new commercial low-density microarray which identifies common extended-spectrum β-lactamase plasmid-mediated cephalosporinase genes, as well as carbapenemase (bla(KPC) and bla(NDM)) genes, was evaluated. We tested 207 clinical and reference/collection isolates of the Enterobacteriaceae possessing different bla genes. Overall, the sensitivity and specificity of the microarray were 100% for the...

Because of the medicinal and economic importance Citrobacter freundii, as well fact that there are only a few local studies on it, purpose this study was to isolate identify important bacterial species from chicken using differential media with comparable biochemical properties. There is severe concern about presence extended-spectrum beta-lactamase (ESBL) creating bacteria in animal husbandry,...

background: enterococci faecalis are predominating species of enterococci causing nosocomial infections. acquisition of resistance to antibacterial agents, and ability to transfer the resistant genes made them clinically important. this study was performed to determine the frequency of isolation of different species of enterococci , and the antibacterial resistance pattern of the isolated speci...

In modern production of protein biopharmaceuticals, a good screening and selection method of high-producing clones can dramatically influence the whole production process and lead to lower production costs. We have created a rapid, simple, and inexpensive method for selecting high-producing clones in the yeast Pichia pastoris that is based on the beta-lactamase reporter system. By integrating t...

Two extended-spectrum beta-lactamase (ESBL)-producing salmonella isolates, Salmonella enterica serovar Enteritidis and Salmonella enterica serovar Typhimurium, were analyzed. Both isolates produced the CTX-M-3 ESBL; however, their bla(CTX-M-3) genes were located on different plasmids. The serovar Typhimurium isolate also expressed another ESBL, SHV-2a, and probably the two ESBL genes had been a...

Among imipenem-nonsusceptible isolates, acquired metallo-beta-lactamase genes were detected in 36 of 581 (6.2%) Pseudomonas aeruginosa isolates, 42 of 44 (95.4%) other Pseudomonas species, and 136 of 513 (26.5%) Acinetobacter species from 2003 to 2004 at a Korean hospital. Overall, bla(VIM-2)-like genes were the most prevalent and were also detected in Enterobacteriaceae, including Klebsiella p...

We conducted a survey in 2015 to evaluate the presence of extended spectrum β-lactamase (ESBL)- and plasmid-mediated AmpC-producing Enterobacteriaceae in retail food and water of the Pearl River in Guangzhou, China, as well as their antibiotic resistance profiles. Samples (88 fresh food samples and 43 water samples) from eight different districts were analyzed by direct plating and after enrich...

BACKGROUND/AIM Virulent Pseudomonas aeruginosa. is frequently life-threatening and often challenging to treat, and the emergence of multidrug-resistant isolates presents a critical problem for patients. The aim of the study was concerned with molecular analysis of the virulence factors and antimicrobial resistance profile of multidrug-resistant P. aeruginosa (MDRPA). MATERIALS AND METHODS Out...

To gain insight into the diversity and origins of antibiotic resistance genes, we identified resistance genes in the soil in an apple orchard using functional metagenomics, which involves inserting large fragments of foreign DNA into Escherichia coli and assaying the resulting clones for expressed functions. Among 13 antibiotic-resistant clones, we found two genes that encode bifunctional prote...

Acinetobacter baumannii (A. baumannii) is an important nosocomial pathogen in healthcare institutions. β-Lactamase-mediated resistance is the most common mechanism for carbapenem resistance in A. baumannii. The aim of this study was to determine the antibiotic resistance pattern, to detect OXA encoding genes, class A, bla PER-1, and to detect the presence of ISAba1. A total of 124 A. baumannii ...