Virulence properties of escherichia coli strains in patients with chronic pyelonephritis

Infection ◽  
1986 ◽  
Vol 14 (3) ◽  
pp. 145-150 ◽  
Author(s):  
R. Fünfstück ◽  
G. Stein ◽  
G. Wessel ◽  
H. Tschäpe ◽  
H. Kunath ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Chronic Pyelonephritis ◽  
Virulence Properties

Virulence Properties of Escherichia coli Isolated from the Rectal Mucosa of Patients with First Attacks of Colitis

1994 ◽  
Vol 8 (1) ◽  
Author(s):  
G. Schumacher ◽  
H. Steinrûck ◽  
A. Geyid ◽  
B. Kollberg ◽  
Å. Ljungh
Keyword(s):  
Escherichia Coli ◽  
Rectal Mucosa ◽  
Virulence Properties

Virulence properties of uropathogenic Escherichia coli isolated from children with urinary tract infection in Korea

2018 ◽  
Vol 40 (6) ◽  
pp. 625-634 ◽  
Author(s):  
Dong Ho Kim ◽  
Bindu Subhadra ◽  
Hee Young Kang ◽  
Kyungho Woo ◽  
Jaeseok Kim ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Uropathogenic Escherichia Coli ◽  
Virulence Properties

Sub-Inhibitory Concentration of Piperacillin–Tazobactam May be Related to Virulence Properties of Filamentous Escherichia coli

2015 ◽  
Vol 72 (1) ◽  
pp. 19-28 ◽  
Author(s):  
João Paulo Lopes de Andrade ◽  
Luiz de Macêdo Farias ◽  
João Fernando Gonçalves Ferreira ◽  
Oscar Bruna-Romero ◽  
Daniele da Glória de Souza ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Inhibitory Concentration ◽  
Virulence Properties

scholarly journals Virulence Properties and Serotypes of Shiga Toxin-Producing Escherichia coli from Healthy Australian Slaughter-Age Sheep

2001 ◽  
Vol 39 (5) ◽  
pp. 2017-2021 ◽  
Author(s):  
S. P. Djordjevic ◽  
M. A. Hornitzky ◽  
G. Bailey ◽  
P. Gill ◽  
B. Vanselow ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Shiga Toxin ◽  
Slaughter Age ◽  
Virulence Properties

scholarly journals Virulence Properties of Shiga Toxin-Producing Escherichia coli (STEC) Strains of Serogroup O118, a Major Group of STEC Pathogens in Calves

1998 ◽  
Vol 36 (6) ◽  
pp. 1604-1607 ◽  
Author(s):  
L. H. Wieler ◽  
Anja Schwanitz ◽  
Elke Vieler ◽  
Barbara Busse ◽  
H. Steinrück ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Shiga Toxin ◽  
Diagnostic Value ◽  
Adhesive Properties ◽  
E Coli ◽  
Virulence Potential ◽  
High Prevalence ◽  
Enterocyte Effacement ◽  
Diarrheic Calves ◽  
Virulence Properties

Shiga toxin-producing Escherichia coli (STEC) strains of serogroup O118 are the most prevalent group among STEC strains in diarrheic calves in Germany (L. H. Wieler, Ph.D. thesis, University of Giessen, 1997). To define their virulence properties, 42 O118 (O118:H16 [n = 38] and O118:H− [n = 4]) strains were characterized. The strains displayed three different Stx combinations (Stx1 [36 of 42], Stx1 and Stx2 [2 of 42], and Stx2 [4 of 42]). A total of 41 strains (97.6%) harbored a large virulence-associated plasmid containinghly EHEC (hly from enterohemorrhagicE. coli). The strains’ adhesive properties varied in relation to the eukaryotic cells tested. Only 28 of 42 strains (66.7%) showed localized adhesion (LA) in the human HEp-2 cell line. In contrast, in bovine fetal calf lung (FCL) cells, the number of LA-positive strains was much higher (37 of 42 [88.1%]). The locus of enterocyte effacement (LEE) was detected in 41 strains (97.6%). However, not all LEE-positive strains reacted positively in the fluorescence actin-staining (FAS) test, which indicated the attaching and effacing (AE) lesion. In HEp-2 cells, only 22 strains (52.4%) were FAS positive, while in FCL cells, the number of FAS-positive strains was significantly higher (38 of 42 [90.5%; P < 0.001]). In conclusion, the vast majority of the O118 STEC strains from calves (41 of 42 [97.6%]) have a high virulence potential (stx, hly EHEC, and LEE). This virulence potential and the high prevalence of STEC O118 strains in calves suggest that these strains could be a major health threat for humans in the future. In addition, the poor association between results of the geno- and phenotypical tests to screen for the AE ability of STEC strains calls the diagnostic value of the FAS test into question.

Detection and Isolation of Escherichia coli with a Coding Gene for Enteroaggregative Escherichia coli Heat-Stable Enterotoxin 1 from Food and Comparison with Fecal Isolates

2004 ◽  
Vol 67 (10) ◽  
pp. 2117-2122 ◽  
Author(s):  
HIRONO TOSHIMA ◽  
EIKO UENAKA ◽  
YING BI ◽  
HIROMI NAKAMURA ◽  
JUN OGASAWARA ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Brilliant Green ◽  
Brain Heart Infusion ◽  
Brain Heart Infusion Broth ◽  
Animal Products ◽  
E Coli ◽  
Source Of Infection ◽  
Heat Stable ◽  
Positive Results ◽  
Virulence Properties

Enteroaggregative Escherichia coli heat-stable enterotoxin 1 (EAST1) was originally regarded as a putative enterotoxin of enteroaggregative Escherichia coli. Although its etiological role has not yet been elucidated, it has been epidemiologically suggested that some strains of E. coli possessing EAST1-coding gene (astA) but no other identifiable pathogenic properties comprise a new group of diarrhea-associated E. coli (EAST1EC). However, the source of the organisms and their prevalence in foods are still obscure. In this study, methods for detection of the organisms in foods heavily contaminated with coliforms were evaluated and properties of the isolated strains were compared with those of fecal strains. Four enrichment methods (brilliant green lactose bile broth, E. coli, lauryl tryptose broth, and a combination of brain heart infusion broth and tryptone phosphate broth) were evaluated through inspection of 115 samples. PCR showed positive results in 26 samples after enrichment with a combination of brain heart infusion broth and tryptone phosphate broth, and EAST1EC was successfully isolated from 18 samples. Fifteen samples showed a positive reaction in the PCR test after enrichment by the other methods, and the organisms were isolated from only 10 specimens. The highest prevalence of EAST1EC was found in animal products (16 of 54, 29.6%); the organism was rarely found in foods of plant origin (2 of 45, 4.4%) or fishery products (1 of 16, 6.3%). Although EAST1EC is unexpectedly common in animal products, its potential as a human pathogen remains uncertain because the possession of some virulence properties differs significantly between strains from fecal specimens and those from foods. Some food isolates, however, possess the same characteristics as diarrheal isolates do. It is necessary to clarify the pathogenicity of EAST1EC and the significance of food as a source of infection.

FREQUENCY AND VIRULENCE PROPERTIES OF DIARRHEAGENIC ESCHERICHIA COLI IN CHILDREN WITH DIARRHEA IN GABON

2003 ◽  
Vol 69 (4) ◽  
pp. 406-410 ◽  
Author(s):  
ELISABETH PRESTERL ◽  
PETER G. KREMSNER ◽  
SONJA REICHMANN ◽  
RALPH H. ZWICK ◽  
STEFAN WINKLER ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Diarrheagenic Escherichia Coli ◽  
Virulence Properties
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