scholarly journals Co-production of 16S rRNA methylases and extended-spectrum  -lactamases in AmpC-producing Enterobacter cloacae, Citrobacter freundii and Serratia marcescens in Korea

2006 ◽  
Vol 58 (4) ◽  
pp. 907-908 ◽  
Author(s):  
Y.-J. Park
2020 ◽  
Vol 66 (5) ◽  
pp. 345-350
Author(s):  
Petra Kubizniaková ◽  
Martina Brožová ◽  
Kateřina Štulíková ◽  
Eva Vontrobová ◽  
Katarína Hanzalíková ◽  
...  

The growth of 7 strains belonging to the order of Enterobacterales, represented by the species of Citrobacter Freundii, Enterobacter cloacae, Escherichia coli, Klebsiella oxytoca, Obesumbacterium proteus, Rahnella aquatilis, Raoultella terrigena, Serratia marcescens and Shimwellia pseudoproteus, was monitored on selected cultivation media. Three types of agars - Endo, MacConkey and Chromocult Coliform agar together with two incubation temperatures of 28 and 37 °C were tested under aerobic conditions. The aim of the study was to detect such essential enterobacteria harmful to beer that cannot be proven at 37 °C, which is the temperature usually used in operational laboratories in breweries. Our results showed that most of the tested strains of enterobacteria were able to grow at 28 °C on all selected types of agar. The exception was just the representatives detection of which is problematic at 37 °C. Nevertheless, a little or no growth was always observed on just one of the tested media.


2010 ◽  
Vol 43 (1) ◽  
pp. 26-34 ◽  
Author(s):  
Po-An Su ◽  
Lii-Tzu Wu ◽  
Kuo-Chen Cheng ◽  
Wen-Chien Ko ◽  
Yin-Ching Chuang ◽  
...  

2003 ◽  
Vol 47 (2) ◽  
pp. 790-793 ◽  
Author(s):  
Hui Wang ◽  
Swathi Kelkar ◽  
Weiyuan Wu ◽  
Minjun Chen ◽  
John P. Quinn

ABSTRACT The prevalence of extended-spectrum β-lactamase-producing strains was demonstrated in 5 of 44 (11.4%) Escherichia coli, 17 of 43 (39.5%) Klebsiella pneumoniae, 3 of 50 (6.0%) Enterobacter cloacae, and 2 of 25 (8.0%) Citrobacter freundii strains at a teaching hospital in China. Nineteen of these 27 strains expressed CTX-M-3 β-lactamase (pI 8.6). A subset of the clinical isolates expressing the CTX-M-3 enzyme, tested by pulsed-field gel electrophoresis, revealed multiple clones. Five isolates expressed a novel enzyme, SHV-43 (pI 8.0), which had two substitutions (Leu113Phe and Thr149Ser) compared with SHV-1.


2005 ◽  
Vol 49 (4) ◽  
pp. 1572-1575 ◽  
Author(s):  
Jungmin Kim ◽  
Yu-Mi Lim ◽  
Young-Sook Jeong ◽  
Sung-Yong Seol

ABSTRACT Among 603 isolates of Enterobacteriaceae collected between June and November 2003 from three university hospitals within Korea, bla CTX-M-3, bla CTX-M-15, bla CTX-M-14, and bla CTX-M-9 were detected in 41 isolates of species from five different genera of Enterobacteriaceae, Escherichia coli, Klebsiella pneumoniae, Citrobacter freundii, Enterobacter spp., and Serratia marcescens.


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