نتایج جستجو برای: extended spectrum b lactamases

تعداد نتایج: 1296641  

Journal: :Antimicrobial agents and chemotherapy 2014
Marija Guzvinec Radosław Izdebski Iva Butic Marko Jelic Maja Abram Iva Koscak Anna Baraniak Waleria Hryniewicz Marek Gniadkowski Arjana Tambic Andrasevic

A population analysis of 103 multidrug-resistant Pseudomonas aeruginosa isolates from Croatian hospitals was performed. Twelve sequence types (STs) were identified, with a predominance of international clones ST235 (serotype O11 [41%]), ST111 (serotype O12 [15%]), and ST132 (serotype O6 [11%]). Overexpression of the natural AmpC cephalosporinase was common (42%), but only a few ST235 or ST111 i...

ژورنال: Medical Laboratory Journal 2018
Barazandeh, Mohadeseh, Komijani, Majid, Sajadi, Mehdi, Shahin, Khashayar,

ABSTRACT             Background and Objectives: Pseudomonas aeruginosa is an opportunistic pathogen resistant to various antibiotics. The aim of the present study was to study resistant patterns in clinical isolates of P. aeruginosa, classify them into pandrug resistance (PDR), extensive drug resistance (XDR) and multidrug resistance (MDR)...

Gashgi, Haghi, Zeighami,

Introduction: Production of extended-spectrum beta-lactamase enzymes (ESBLs) in E. coli creates many problems for patients. These enzymes are located on transferable elements and can hydrolyze penicillins, broad-spectrum cephalosporins, and aztreonam. This study aimed to determine the clinical isolates of E. coli producing ESBLs of blaSHV and blaTEM in the city of Zanjan. Methods: This cross...

2003
Guillem Prats Beatriz Mirelis Elisenda Miró Ferran Navarro Teresa Llovet James R. Johnson Neus Camps Ángela Domínguez Lluis Salleras

led to the detection of Salmonella enterica and extended-spectrum cephalosporin-resistant Escherichia coli (ESCREC). Stool cultures were performed for 22 symptomatic campers, three asymptomatic food handlers, and 10 healthy household members. Of the 22 campers, 19 had Salmonella enterica, 9 had an ESCREC strain carrying an extended-spectrum β-lactamase, and 2 had a second ESCREC strain carrying...

Journal: :MSystems 2021

Extended-spectrum β-lactamases (ESBL)-producing Enterobacterales are a leading cause of human and animal infections, being classified as critical priority pathogens by the World Health Organization. Epidemiological studies have shown that spread ESBL-producing bacteria is not problem restricted to hospitals, but also represents growing involving environmental food safety.

Journal: :Applied and environmental microbiology 2008
Patricia Poeta Hajer Radhouani Gilberto Igrejas Alexandre Gonçalves Carlos Carvalho Jorge Rodrigues Laura Vinué Sergio Somalo Carmen Torres

Escherichia coli isolates containing the following extended-spectrum beta-lactamases have been detected in 11 of 57 fecal samples (19.3%) in Berlengas Island seagulls: TEM-52 (eight isolates), CTX-M-1 (one isolate), CTX-M-14a (one isolate), and CTX-M-32 (one isolate). Most of the extended-spectrum beta-lactamase-positive isolates harbored class 1 or class 2 integrons, which included different a...

Journal: :jundishapur journal of microbiology 0
shahla mansouri department of microbiology, school of medicine, kerman university of medical sciences, kerman, ir iran davood kalantar neyestanaki department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran; department of microbiology, school of medicine, tehran university of medical sciences, tehran, ir iran. tel/fax:+98-2188955810 mostafa shokoohi physiology research center, kerman university of medical sciences, kerman, ir iran shahnaz halimi department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran reza beigverdi department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran fereshteh rezagholezadeh department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran

background: extended spectrum β-lactamases (esbls) and ampc β-lactamases enzyme are major sources of resistance to β-lactam antibiotics especially in enterobacteriaceae such as escherichia coli and klebsiella pneumoniae. increasing frequency of the co-existence of esbls with ampc-β-lactamases in bacteria is a serious threat for treating bacterial infections. conclusions: outbreak of isolates co...

Journal: :Antimicrobial agents and chemotherapy 2009
Laurent Poirel José-Manuel Rodriguez-Martinez Patrick Plésiat Patrice Nordmann

Chromosomally encoded ss-lactamases from the Burkholderia cepacia complex species (formerly Pseudomonas cepacia) were characterized. Cloning and sequencing identified an Ambler class A ss-lactamase (PenB) from B. cenocepacia. It shares 82% amino acid identity with the PenA ss-lactamases previously identified from B. multivorans 249. Its expression was dependent upon a LysR-type regulatory prote...

Journal: :Journal of clinical microbiology 2000
M W Carter K J Oakton M Warner D M Livermore

The Oxoid combination disk method for detecting extended-spectrum beta-lactamases (ESBLs) depends on comparing the inhibition zones of cefpodoxime (10-microg) and cefpodoxime-plus-clavulanate (10- plus 1-microg) disks. The presence of clavulanate enlarged the zones for all of 180 ESBL-producing klebsiellae by >/=5 mm, whereas zones for cefpodoxime-susceptible isolates and cefpodoxime-resistant ...

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