نتایج جستجو برای: ampc genes

تعداد نتایج: 427482  

Journal: :Antimicrobial agents and chemotherapy 2004
Niels Bagge Morten Hentzer Jens Bo Andersen Oana Ciofu Michael Givskov Niels Høiby

The development of resistance to beta-lactam antibiotics is a problem in the treatment of chronic Pseudomonas aeruginosa infection in the lungs of patients with cystic fibrosis. The main resistance mechanism is high-level expression of the chromosomally encoded AmpC beta-lactamase of P. aeruginosa cells growing in biofilms. Several genes have been shown to influence the level of ampC expression...

Journal: :Journal of clinical microbiology 2000
P E Coudron E S Moland K S Thomson

AmpC beta-lactamases are cephalosporinases that confer resistance to a wide variety of beta-lactam drugs and that may thereby create serious therapeutic problems. Although reported with increasing frequency, the true rate of occurrence of AmpC beta-lactamases in Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis remains unknown. We tested a total of 1,286 consecutive, nonrepeat isol...

Journal: :Food Science and Technology 2021

Abstract The aim of this study was to investigate the presence virulence and antimicrobial resistance genes clonal profile Enterobacteriaceae isolated from calves, cows, feeding buckets milk bucket. A a total 31 isolates calves (6), bucket (6) cows’ rectum (13) were used. LT, STa, STb, STx1, STx2, eae, rmpA, wabG, mrkD, kfu, mcgA, fimH uge as well genes: AmpC MOX, FOX, MIR, ACT, DHA, ACC, CTX-M...

Journal: :Antimicrobial agents and chemotherapy 2006
Hedi Mammeri Laurent Poirel Nicolas Fortineau Patrice Nordmann

Genetic and functional characterization of the cephalosporinases produced by 65 clonally unrelated clinical Escherichia coli isolates revealed genetic diversity of the ampC genes and showed that Gln287, Cys287, Pro296, Leu298, and Phe350 substitutions were involved in extension of the hydrolysis spectrum to include ceftazidime and cefepime.

2012
Jharna Mandal Vilwanathan Sangeetha Vithiya Ganesan Mohamudha Parveen Venkatesan Preethi Belgode Narasimha Harish Sampath Srinivasan Subhash Chandra Parija

Vibrio cholerae resistance to third-generation cephalosporins is rarely reported. We detected a strain that was negative for extended-spectrum β-lactamase and positive for the AmpC disk test, modified Hodge test, and EDTA disk synergy test and harbored the blaDHA-1 and blaNDM-1 genes. The antimicrobial drug susceptibility profile of V. cholerae should be monitored.

Journal: :Antimicrobial agents and chemotherapy 2003
Laura Briñas Miguel Angel Moreno Myriam Zarazaga Concepción Porrero Yolanda Sáenz María García Lucas Dominguez Carmen Torres

Genes encoding the CMY-2, CTX-M-14, and SHV-12 beta-lactamases were detected in three of five Escherichia coli isolates from fecal samples from healthy chickens which showed resistance or diminished susceptibility to extended-spectrum cephalosporins. A -42 mutation at the promoter region of the ampC gene was detected in the other two isolates.

2015
Yu Wan Claire L Gorrie Adam Jenney Mirjana Mirceta Kathryn E Holt

Serratia marcescens strain AH0650_Sm1 is a clinical multidrug-resistant isolate from Australia. Here, we report its annotated draft genome comprising 20 contigs. We identified chromosomal antimicrobial resistance genes including a tet(41) variant, an aac(6')-Ic variant, ampC, a metallo-beta-lactamase, and several putative multidrug efflux pumps, as well as a novel prophage.

2015
Felipe Lira de Sá Cavalcanti Cristina Rodríguez Mirones Elena Román Paucar Laura Álvarez Montes Tereza Cristina Leal-Balbino Marcia Maria Camargo de Morais Luis Martínez-Martínez Alain Antonio Ocampo-Sosa

An investigation was carried out into the genetic mechanisms responsible for multidrug resistance in nine carbapenem-resistant Pseudomonas aeruginosa isolates from different hospitals in Recife, Brazil. Susceptibility to antimicrobial agents was determined by broth microdilution. Polymerase chain reaction (PCR) was employed to detect the presence of genes encoding β-lactamases, aminoglycoside-m...

Journal: :Journal of clinical microbiology 2003
S Zhao S Qaiyumi S Friedman R Singh S L Foley D G White P F McDermott T Donkar C Bolin S Munro E J Baron R D Walker

Salmonella enterica serotype Newport isolates resistant to at least nine antimicrobials (including extended-spectrum cephalosporins), known as serotype Newport MDR-AmpC isolates, have been rapidly emerging as pathogens in both animals and humans throughout the United States. Resistance to extended-spectrum cephalosporins is associated with clinical failures, including death, in patients with sy...

Journal: :Acta medica Indonesiana 2013
Yulia R Saharman Delly C Lestari

AIM the goal of this study is to understand the phenotype characteristic of beta-lactamase enzymes producing Enterobacteriaceae, such as ESBL, AmpC, and carbapenemase. METHODS three different methods are performed to confirm those phenotypic characteristics, namely double disk diffusion method to confirm ESBL, AmpC disk test (cefoxitin-based) to confirm AmpC, and modified Hodge test to confir...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید