AmpC β-lactamases
Original Article Detection of integrons in Escherichia coli producing plasmid-mediated AmpC β-lactamases
... mid-encoded AmpC (pAmpC) β-lactamases and the presence of integrons among pAmpC positive ...studied. AmpC disk test was used for phenotypic AmpC-β-lactamase ...for AmpC, ...
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Detection of AmpC-β-lactamases producing isolates among carbapenem resistant P. aeruginosa isolated from burn patient.
... (3). AmpC in ...in ampC may lead to overproduction of AmpC-β-lactamases by some ...(4). AmpC overproduction not only causes resistance to cephalosporins, cephamycin and ...
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Inhibitor Based Methods for Detection of Plasmid Mediated AmpC β Lactamases in Klebsiella spp , Escherichia coli, and Proteus mirabilis
... were AmpC-PCR-positive, and the boronic acid disk test de- tected 54 of the isolates in this latter group (13 Klebsiella, 38 ...plasmid-mediated AmpC producers (3 ...the AmpC-producing ...DHA-like ...
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Prevalence of Plasmid Mediated AmpC β Lactamases in a Chinese University Hospital from 2003 to 2005: First Report of CMY 2 Type AmpC β Lactamase Resistance in China
... naturally AmpC-negative species, such as ...chromosomal AmpC enzyme by gene duplication or mu- tation in the ampC promoter or attenuator, with consequent enhanced gene ...
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Laboratory Surveillance for Prospective Plasmid Mediated AmpC β Lactamases in the Kinki Region of Japan
... Extended-spectrum  -lactamases, plasmid-mediated AmpC  -lactamases (PABLs), and plasmid-mediated metallo-  -lactamases confer resistance to many  -lactams. In Japan, although several ...
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Occurrence and detection of AmpC β lactamases among clinical isolates of Enterobacteriaceae at a tertiary care hospital
... detected AmpC phenotypically. The most prevalent AmpC genes belonged to FOX, MOX and CIT in our study ...of AmpC may aid in hospital infection control and help the physician to prescribe the most ...
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Prevalence and molecular characterization of β lactamases in clinical isolates of klebsiella pneumoniae from north of palestine
... of β-lactamase genes in single isolates was observed in this ...of β- lactamase classes or multiple genes of ESBLs, MBLs or AmpC β-lactamases has been reported from different species of ...
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Detection of Ampc and Extended-Spectrum Beta-Lactamases in Clinical Isolates of Pseudomonas Aeruginosa from Patients with Cystic Fibrosis
... to β-lactam antibiotics in ...mediated AmpC cephalosporinases, acquisition of transferable β-lactamase genes such as extended-spectrum β-lactamases (ESBLs) and ...
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Fecal carriage of extended-spectrum β-lactamases and AmpC-producing Escherichia coli in a Libyan community
... Extended-spectrum β -lactamases (ESBLs), including the AmpC type, are important mechanisms of resistance among ...extended-spectrum β - lactamases, of which there are now over 90 ...
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Frequency of AmpC β-lactamase Resistance in Escherichia coli Isolates from Urinary Tract Infections in Gorgan, Iran
... Introduction: AmpC β-lactamases are among the most important ...of AmpC β- lactamases in microorganisms is often associated with multidrug resistance and limited treatment ...of ...
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Antimicrobial susceptibilities of Proteus mirabilis: a longitudinal nationwide study from the Taiwan surveillance of antimicrobial resistance (TSAR) program
... All isolates with aztreonam, ceftazidime, or cefotaxime MIC ≥ 2 mg/L were tested for the presence of ESBL by CLSI confirmatory test using cefotaxime and ceftazidime with and without clavulanic acid [25]. These isolates ...
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Emergence of CMY-2- and DHA-1-typeAmpC β-lactamases in Entero- bacter cloacae isolated from several hospitals of Qazvin and Tehran, Iran
... (11). AmpC β-lactamases are either plasmid or chromosomal ...plasmid-borne AmpC cephalosporinases were detected on plasmids which facilitate their spread be- tween the Enterobacteriaceae (10, ...
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RESEARCH ARTICLE AmpC beta-lactamases in Klebsiella pneumoniae: An emerging threat to the paediatric patients
... from pus and 7(5.6%) from CSF (Table-3). The overall outcome showed that 110(87.3%) patients were discharged after successful treatment. The outcome of the 5(4.0%) patients who left against medical advice (LAMA) remained ...
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Analysis of Enterobacteriaceae Producing Broad Spectrum Beta Lactamases in the Intensive Care Unit Setting
... genes [15]. SHV-products were digested with restriction endonuclease NheI, TEM-positive amplicons with the MseI, Sau3AI, MspI and HphI enzymes for identification of mutations extending the spectrum of activity [16,17]. ...
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Extended Spectrum β Lactamase, AmpC, and Carbapenemase Issues
... or AmpC  -lac- tamases are present and falsely negative for some carbapen- emase ...high-level AmpC production is not present in an organism, aztreonam susceptibility in com- bination with reduced ...
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An Improved Extended Spectrum β Lactamase Detection Test Utilizing Aztreonam plus Clavulanate
... The greatest value of the test is its high accuracy in the detection of ESBLs, especially when they are masked by coproduction of an AmpC. This may be relevant to cefepime therapy of infections by ...
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Detection of Plasmid Mediated AmpC β Lactamase Genes in Clinical Isolates by Using Multiplex PCR
... chromosomal ampC is that the ex- pression of ampC in ...overexpress ampC (8, 20, ...chromosomal ampC (2, 26). Therefore, de- tection of plasmid-mediated ampC in ...mediated AmpC ...
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Dissemination of SHV 12 and Characterization of New AmpC Type Beta Lactamase Genes among Clinical Isolates of Enterobacter Species in Korea
... (4). AmpC beta-lactamases, mostly conferring resistance to many beta-lactam antibiotics (cephamycins and broad-spectrum cephalosporins), are included in class C ...encoded AmpC beta-lactamases ...
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The Mechanisms of Catalysis by Metallo β Lactamases
... B β-lactamases or metallo-β-lactamases (MBLs) require zinc ions to catalyse the hydrolysis of β-lactam antibiotics such as penicillins, cephalosporins, carbapenems, and ...the ...
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Occurrence and Detection of AmpC Beta Lactamases among Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis Isolates at a Veterans Medical Center
... 16 AmpC-producing ...1 AmpC enzymes, some isolates har- bored other beta-lactamases that were inhibited by clavulanic acid but not by ...16 AmpC producers, the addition of 4 g of Ro 48-1220 ...
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