pic gene of enteroaggregative Escherichia coli and its association with diarrhea in Peruvian children

David Durand, Carmen A. Contreras, Susan Mosquito, Joaquim Rúiz, Thomas G. Cleary, Theresa J. Ochoa

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

14 Citas (Scopus)


Enteroaggregative Escherichia coli (EAEC) causes acute and persistent diarrhea among children, HIV-infected patients, and travelers to developing countries. We have searched for 18 genes-encoding virulence factors associated with aggregative adherence, dispersion, biofilm, toxins, serine protease autotransporters of Enterobacteriaceae (SPATEs) and siderophores, analyzed in 172 well-characterized EAEC strains (aggR+) isolated from stool samples of 97 children with diarrhea and 75 healthy controls from a passive surveillance diarrhea cohort study in Peru. Eighty-one different genetic profiles were identified, 37 were found only associated with diarrhea and 25 with control samples. The most frequent genetic profile was aggC+aatA+aap+shf+fyuA+, present in 19 strains, including diarrhea and controls. The profile set1A+set1B+pic+ was associated with diarrhea (P < 0.05). Of all genes evaluated, the most frequent were aatA (CVD 342) present in 159 strains (92.4%) and fyuA in 157 (91.3%). When EAEC strains were analyzed as a single pathogen (excluding co-infections), only pic was associated with diarrhea (P < 0.05) and with prolonged diarrhea (diarrhea ≥ 7 days) (P < 0.05). In summary, this is the first report on the prevalence of a large set of EAEC virulence genes and its association with diarrhea in Peruvian children. More studies are needed to elucidate the exact role of each virulence factor.

Idioma originalInglés
Número de artículoftw054
PublicaciónPathogens and Disease
EstadoPublicada - 1 ago. 2016


Profundice en los temas de investigación de 'pic gene of enteroaggregative Escherichia coli and its association with diarrhea in Peruvian children'. En conjunto forman una huella única.

Citar esto