scholarly journals Inhibitory activity of cranberry juice on adherence of type 1 and type P fimbriated Escherichia coli to eucaryotic cells.

1989 ◽  
Vol 33 (1) ◽  
pp. 92-98 ◽  
Author(s):  
D Zafriri ◽  
I Ofek ◽  
R Adar ◽  
M Pocino ◽  
N Sharon
Keyword(s):  
Escherichia Coli ◽  
Inhibitory Activity ◽  
Cranberry Juice

scholarly journals Crystal Structure of the B Subunit of Escherichia coli Heat-labile Enterotoxin Carrying Peptides with Anti-herpes Simplex Virus Type 1 Activity

1999 ◽  
Vol 274 (13) ◽  
pp. 8764-8769
Author(s):  
Dubravka Matković-Calogović ◽  
Arianna Loregian ◽  
Maria Rosa D'Acunto ◽  
Roberto Battistutta ◽  
Alessandro Tossi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Escherichia Coli ◽  
Herpes Simplex Virus ◽  
Herpes Simplex ◽  
Virus Type ◽  
Herpes Simplex Virus Type ◽  
B Subunit ◽  
Heat Labile ◽  
Simplex Virus

Comparison of colony and stool blots for detection of enteropathogens by DNA probes

1991 ◽  
Vol 37 (5) ◽  
pp. 407-410
Author(s):  
Mônica A. M. Vieira ◽  
Beatriz E. C. Guth ◽  
Tânia A. T. Gomes
Keyword(s):  
Escherichia Coli ◽  
Key Words ◽  
Sensitivity And Specificity ◽  
Dna Probes ◽  
Type I ◽  
Enteropathogenic Escherichia Coli ◽  
Key Words Dna ◽  
E Coli ◽  
Heat Stable

DNA probes that identify genes coding for heat-labile type I (LT-I) and heat-stable type 1 (ST-I) enterotoxins, enteropathogenic Escherichia coli adherence factor (EAF), and Shigella-like, invasiveness (INV) are used to evaluate the sensitivity and specificity of stool blots in comparison with the sensitivity and specificity of colony blots in detecting enteropathoghens. The sensitivities of the probes in stool blots are 91.7% for the LT-I probe, 76.9% for the ST-I probes, 78.9% for the EAF probe, and 45.5% for the INV probe. The specificity of all probes is higher than 95%. In general, the stool blot method identifies as many if not more LT-I-, ST-I-, and EAF-producing E. coli infections than the colony blots. Key words: DNA probes, stool blots, enteropathogens, diagnosis.

scholarly journals Determinants encoding fimbriae type 1 in fecal Escherichia coli are associated with increased frequency of bacteriocinogeny

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Barbora Štaudová ◽  
Lenka Micenková ◽  
Juraj Bosák ◽  
Kristýna Hrazdilová ◽  
Eva Slaninková ◽  
...  
Keyword(s):  
Escherichia Coli

Clustering of Escherichia coli Type-1 Fimbrial Adhesins by Using Multimeric Heptyl α-D-Mannoside Probes with a Carbohydrate Core

2011 ◽  
Vol 17 (36) ◽  
pp. 10029-10038 ◽  
Author(s):  
Mehdi Almant ◽  
Vincent Moreau ◽  
José Kovensky ◽  
Julie Bouckaert ◽  
Sébastien G. Gouin
Keyword(s):  
Escherichia Coli ◽  
Fimbrial Adhesins

scholarly journals Role of the ceramide-signaling pathway in cytokine responses to P-fimbriated Escherichia coli.

1996 ◽  
Vol 183 (3) ◽  
pp. 1037-1044 ◽  
Author(s):  
M Hedlund ◽  
M Svensson ◽  
A Nilsson ◽  
R D Duan ◽  
C Svanborg
Keyword(s):  
Escherichia Coli ◽  
Signaling Pathway ◽  
Kinase Inhibitors ◽  
Human Kidney ◽  
Cytokine Response ◽  
Protein Kinase Inhibitors ◽  
E Coli ◽  
Type 1 Fimbriae ◽  
Outer Leaflet

Escherichia coli express fimbriae-associated adhesins through which they attach to mucosal cells and activate a cytokine response. The receptors for E. coli P fimbriae are the globoseries of glycosphingolipids; Gal alpha 1-->4Gal beta-containing oligosaccharides bound to ceramide in the outer leaflet of the lipid bilayer. The receptors for type 1 fimbriae are mannosylated glycoproteins rather than glycolipids. This study tested the hypothesis that P-fimbriated E. coli elicit a cytokine response through the release of ceramide in the receptor-bearing cell. We used the A498 human kidney cell line, which expressed functional receptors for P and type 1 fimbriae and secreted higher levels of interleukin (IL)-6 when exposed to the fimbriated strains than to isogenic nonfimbriated controls. P-fimbriated E. coli caused the release of ceramide and increased the phosphorylation of ceramide to ceramide 1-phosphate. The IL-6 response to P-fimbriated E. coli was reduced by inhibitors of serine/threonine kinases but not by other protein kinase inhibitors. In contrast, ceramide levels were not influenced by type 1-fimbriated E. coli, and the IL-6 response was insensitive to the serine/threonine kinase inhibitors. These results demonstrate that the ceramide-signaling pathway is activated by P-fimbriated E. coli, and that the receptor specificity of the P fimbriae influences this process. We propose that this activation pathway contributes to the cytokine induction by P-fimbriated E. coli in epithelial cells.

scholarly journals Prevalence of ColE1-Like Plasmids and Colicin K Production among Uropathogenic Escherichia coli Strains and Quantification of Inhibitory Activity of Colicin K

2006 ◽  
Vol 73 (3) ◽  
pp. 1029-1032 ◽  
Author(s):  
Matija Rijavec ◽  
Maruška Budič ◽  
Peter Mrak ◽  
Manica M�ller-Premru ◽  
Zdravko Podlesek ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Inhibitory Activity ◽  
Insertion Sequence ◽  
Uropathogenic Escherichia Coli ◽  
Mosaic Structure ◽  
High Prevalence ◽  
Low Prevalence

ABSTRACT Colicin K exhibited pronounced inhibitory activity against uropathogenic Escherichia coli (UPEC) strains. Low prevalence of colicin K production and a relatively high prevalence of ColE1-like plasmids were determined among 215 UPEC strains from Slovenia. Sequencing of the colicin K-encoding pColK-K235 revealed a mosaic structure and the presence of the insertion sequence IS2.

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