Activity of ceftazidime/avibactam against Enterobacteriaceae producing extended-spectrum beta-lactamases and acquired AmpC beta-lactamases, including those lacking porin expression

2016 ◽  
Author(s):  
M. Carmen Conejo
Keyword(s):  
Beta Lactamases ◽  
Extended Spectrum ◽  
Extended Spectrum Beta Lactamases

Outbreak of Serratia marcescens Coproducing ArmA and CTX-M-15 Mediated High Levels of Resistance to Aminoglycoside and Extended-Spectrum Beta-Lactamases, Algeria

2015 ◽  
Vol 21 (4) ◽  
pp. 470-476 ◽  
Author(s):  
Rima Batah ◽  
Lotfi Loucif ◽  
Abiola Olumuyiwa Olaitan ◽  
Nafissa Boutefnouchet ◽  
Hamoudi Allag ◽  
...  
Keyword(s):  
Serratia Marcescens ◽  
Beta Lactamases ◽  
Extended Spectrum ◽  
Extended Spectrum Beta Lactamases

Investigation of the clonal dissemination of Klebsiella pneumoniae isolates producing extended-spectrum beta-lactamases in a neonatal ward, Sousse, Tunisia

2005 ◽  
Vol 53 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Olfa Bouallègue-Godet ◽  
Francine Grimont ◽  
Youssef Ben Salem ◽  
Mabrouka Saidani ◽  
Ridha Mzoughi ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Beta Lactamases ◽  
Extended Spectrum ◽  
Extended Spectrum Beta Lactamases ◽  
Neonatal Ward

scholarly journals More extended-spectrum beta-lactamases.

1991 ◽  
Vol 35 (9) ◽  
pp. 1697-1704 ◽  
Author(s):  
G A Jacoby ◽  
A A Medeiros
Keyword(s):  
Beta Lactamases ◽  
Extended Spectrum ◽  
Extended Spectrum Beta Lactamases

scholarly journals Characterization of beta-lactamase gene blaPER-2, which encodes an extended-spectrum class A beta-lactamase.

1996 ◽  
Vol 40 (3) ◽  
pp. 616-620 ◽  
Author(s):  
A Bauernfeind ◽  
I Stemplinger ◽  
R Jungwirth ◽  
P Mangold ◽  
S Amann ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Beta Lactamase ◽  
Reading Frame ◽  
Beta Lactamases ◽  
Class A ◽  
Extended Spectrum ◽  
The Family ◽  
Extended Spectrum Beta Lactamases ◽  
Lactamase Gene

Plasmidic extended-spectrum beta-lactamases of Ambler class A are mostly inactive against ceftibuten. Salmonella typhimurium JMC isolated in Argentina harbors a bla gene located on a plasmid (pMVP-5) which confers transferable resistance to oxyiminocephalosporins, aztreonam, and ceftibuten. The beta-lactamase PER-2 (formerly ceftibutenase-1; CTI-1) is highly susceptible to inhibition by clavulanate and is located at a pI of 5.4 after isoelectric focusing. The blaPER-2 gene was cloned and sequenced. The nucleotide sequence of a 2.2-kb insert in vector pBluescript includes an open reading frame of 927 bp. Comparison of the deduced amino acid sequence of PER-2 with those of other beta-lactamases indicates that PER-2 is not closely related to TEM or SHV enzymes (25 to 26% homology). PER-2 is most closely related to PER-1 (86.4% homology), an Ambler class A enzyme first detected in Pseudomonas aeruginosa. An enzyme with an amino acid sequence identical to that of PER-1, meanwhile, was found in various members of the family Enterobacteriaceae isolated from patients in Turkey. Our data indicate that PER-2 and PER-1 represent a new group of Ambler class A extended-spectrum beta-lactamases. PER-2 so far has been detected only in pathogens (S. typhimurium, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis) isolated from patients in South America, while the incidence of PER-1-producing strains so far has been restricted to Turkey, where it occurs both in members of the family Enterobacteriaceae and in P. aeruginosa.

Sign in / Sign up

Export Citation Format

Share Document