scholarly journals Evaluation of the in vitro efficacy of non-beta-lactam antibiotics in extended-spectrum beta-lactamase-producing and non-producing Klebsiella spp. and Escherichia coli strains

2021 ◽  
Vol 2 (2) ◽  
pp. 47-53
Author(s):  
Göknur YAPAR TOROS ◽  
Funda TİMURKAYNAK
Keyword(s):  
Escherichia Coli ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Extended Spectrum Beta Lactamase ◽  
Beta Lactam Antibiotics ◽  
Extended Spectrum ◽  
Klebsiella Spp

scholarly journals A TEM-derived extended-spectrum beta-lactamase in Pseudomonas aeruginosa.

1996 ◽  
Vol 40 (11) ◽  
pp. 2488-2493 ◽  
Author(s):  
P Mugnier ◽  
P Dubrous ◽  
I Casin ◽  
G Arlet ◽  
E Collatz
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Clinical Strain ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Aminoglycoside Resistance ◽  
Double Mutation ◽  
Extended Spectrum Beta Lactamase ◽  
Beta Lactam Antibiotics ◽  
Extended Spectrum ◽  
High Level

A clinical strain of Pseudomonas aeruginosa, PAe1100, was found to be resistant to all antipseudomonal beta-lactam antibiotics and to aminoglycosides, including gentamicin, amikacin, and isepamicin. PAe1100 produced two beta-lactamases, TEM-2 (pI 5.6) and a novel, TEM-derived extended-spectrum beta-lactamase called TEM-42 (pI 5.8), susceptible to inhibition by clavulanate, sulbactam, and tazobactam. Both enzymes, as well as the aminoglycoside resistance which resulted from AAC(3)-IIa and AAC(6')-I production, were encoded by an 18-kb nonconjugative plasmid, pLRM1, that could be transferred to Escherichia coli by transformation. The gene coding for TEM-42 had four mutations that led to as many amino acid substitutions with respect to TEM-2: Val for Ala at position 42 (Ala42), Ser for Gly238, Lys for Glu240, and Met for Thr265 (Ambler numbering). The double mutation Ser for Gly238 and Lys for Glu240, which has so far only been described in SHV-type but not TEM-type enzymes, conferred concomitant high-level resistance to cefotaxime and ceftazidime. The novel, TEM-derived extended-spectrum beta-lactamase appears to be the first of its class to be described in P. aeruginosa.

scholarly journals Detection of CTX-M gene in extended spectrum beta lactamase (ESBL) producing Escherichia coli and Klebsiella species of different hospitals.

2012 ◽  
Vol 4 (2) ◽  
pp. 28-31 ◽  
Author(s):  
Nawshad Muhammad Wahidur Rahman ◽  
Afzalunnessa Binte Lutfor ◽  
Sanya Tahmina Jhora ◽  
Mahmuda Yasmin ◽  
Jalaluddin Ashraful Haq
Keyword(s):  
Escherichia Coli ◽  
Tertiary Care ◽  
Beta Lactamase ◽  
M Gene ◽  
Klebsiella Species ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
Synergy Test ◽  
Tertiary Care Hospitals ◽  
Klebsiella Spp

A total of 200, non-duplicate ESBL producing strains (171 Escherichia coli and 29 Klebsiella spp.) from three tertiary care hospitals were detected using screening test & double disc synergy test. All isolates were screened for the detection of CTX-M type Extended spectrum Beta-lactamase (ESBL) using PCR. Among them 133 (66.5%) were positive for CTX-M type ESBLs which include 114 (66.66%) E.coli and 19 (65.51%) Klebsiella spp. This is the first report of identifying CTX-M gene in ESBL producing Escherichia coli and Klebsiella species of different hospitals.DOI: http://dx.doi.org/10.3329/bjmm.v4i2.10829 

Fecal Carriage of Extended Spectrum Beta-Lactamase (ESBL)-Producing Escherichia coli and Klebsiella spp. in Children in Zonguldak

2019 ◽  
Vol 24 (3) ◽  
pp. 236-243
Author(s):  
Nesibe Söğütlü ◽  
Füsun Cömert ◽  
İbrahim Etem Pişkin ◽  
Elif Aktaş ◽  
Füruzan Köktürk ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
Fecal Carriage ◽  
Extended Spectrum ◽  
Klebsiella Spp

Wide dissemination of extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli and Klebsiella spp. in acute care and rehabilitation hospitals

2011 ◽  
Vol 140 (3) ◽  
pp. 528-534 ◽  
Author(s):  
A. KOHLENBERG ◽  
F. SCHWAB ◽  
H. RÜDEN
Keyword(s):  
Escherichia Coli ◽  
Control Measures ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
The Mean ◽  
Rehabilitation Hospitals ◽  
Klebsiella Spp ◽  
Wide Dissemination ◽  
Community Onset

SUMMARYA prospective surveillance system for extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-E) and ESBL-producing Klebsiella spp. (ESBL-K) was implemented in 39 German hospitals with the aim of determining the incidence densities (IDs) of community-onset and hospital-onset cases and of identifying risk factors for high IDs of hospital-onset cases. During 2008, 2081 ESBL-E/K cases were documented. ESBL-E cases (n=1330, 63·9%) were more common than ESBL-K cases (n=751, 36·1%), but a higher proportion of ESBL-K cases (59%) than of ESBL-E cases (39·5%) were hospital-onset cases. The mean IDs were 0·54 (range 0–2·53) per 1000 patient-days for all ESBL-EK cases, 0·29 (range 0–1·81) per 1000 patient-days for community-onset ESBL-EK cases and 0·25 (range 0–1·82) per 1000 patient-days for hospital-onset ESBL-EK cases. Regression analysis showed a linear association between the IDs of community-onset and hospital-onset cases. The wide dissemination of ESBL-E and ESBL-K emphasizes the need for hospital-wide surveillance to guide control measures.

scholarly journals Characterization of Multidrug Resistant Extended-Spectrum Beta-Lactamase-ProducingEscherichia coliamong Uropathogens of Pediatrics in North of Iran

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammad Sadegh Rezai ◽  
Ebrahim Salehifar ◽  
Alireza Rafiei ◽  
Taimour Langaee ◽  
Mohammadreza Rafati ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Multidrug Resistant ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Beta Lactam Antibiotics ◽  
Extended Spectrum ◽  
Extended Spectrum Beta Lactamases ◽  
North Of Iran

Escherichia coliremains as one of the most important bacteria causing infections in pediatrics and producing extended-spectrum beta-lactamases (ESBLs) making them resistant to beta-lactam antibiotics. In this study we aimed to genotype ESBL-producingE. coliisolates from pediatric patients for ESBL genes and determine their association with antimicrobial resistance. One hundred of theE. coliisolates were initially considered ESBL producing based on their MIC results. These isolates were then tested by polymerase chain reaction (PCR) for the presence or absence ofCTX,TEM,SHV,GES, andVEBbeta-lactamase genes. About 30.5% of isolatedE. coliwas ESBL-producing strain. TheTEMgene was the most prevalent (49%) followed bySHV(44%),CTX(28%),VEB(8%), andGES(0%) genes. The ESBL-producingE. coliisolates were susceptible to carbapenems (66%) and amikacin (58%) and showed high resistance to cefixime (99%), colistin (82%), and ciprofloxacin (76%). In conclusion, carbapenems were the most effective antibiotics against ESBl-producingE. coliin urinary tract infection in North of Iran. The most prevalent gene is the TEM-type, but the other resistant genes and their antimicrobial resistance are on the rise.

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