Enterohemorrhagic Escherichia coli (EHEC) are important human pathogens, causing hemorrhagic colitis and hemolytic uraemic syndrome in humans. E. coli O157:H7 is the most common serotype associated with EHEC infections worldwide, although other non-O157 serotypes cause life-threatening infections. Cattle are a main reservoir of EHEC and intervention strategies aimed at limiting EHEC excretion f...

Atypical enteropathogenic Escherichia coli (aEPEC) strains are diarrheal pathogens that lack bundle-forming pilus production but possess the virulence-associated locus of enterocyte effacement. aEPEC strain 1551-2 produces localized adherence (LA) on HeLa cells; however, its isogenic intimin (eae) mutant produces a diffuse-adherence (DA) pattern. In this study, we aimed to identify the DA-assoc...

Enteropathogenic Escherichia coli (EPEC) was found to exhibit a type III secretion-dependent, contact-mediated, hemolytic activity requiring the EspA, EspB, and EspD secreted proteins. EspB and EspD display homology to pore-forming molecules. Our data suggest a mechanism to explain the requirement for all three Esp proteins in the transfer of EPEC proteins, such as Tir, into target cells.

El apodo es el apelativo que alguien se da o recibe viendo cĂłmo lo hace. Describe mejor a las personas sus apellidos y nombres ya orienta calificarlas fĂ­sica moralmente. Que estudiantes de una lengua extranjera atribuyan apodos en este idioma puede considerarse un elemento motivacional su aprendizaje, la vez denota actitud integradora hacia cultura meta. 181 español total 563 encuestados...

Shiga toxin-producing Escherichia coli (STEC) serotype O103 is a zoonotic pathogen that is capable of causing hemorrhagic colitis and hemolytic uremic syndrome (HUS) in humans. The main animal reservoir for STEC is ruminants and hence reducing the levels of this pathogen in cattle could ultimately lower the risk of STEC infection in humans. During the process of infection, STECO103 uses a Type ...

The pathophysiology of enteropathogenic Escherichia coli (EPEC) diarrhea remains uncertain. In vitro, EPEC stimulates a rapid increase in short-circuit current (Isc) across Caco-2 cell monolayers coincident with intimate attaching and effacing (A/E) bacterial adhesion. This study has examined the roles of specific EPEC virulence proteins in this Isc response. EPEC genes encoding EspA, EspB, and...