Diarrhoeagenic E. coli pathotypes in children with and without diarrhoea in an Iranian referral paediatrics centre/Pathotypes Escherichia coli diarrheogenes chez des enfants souffrant ou non de diarrhees dans un centre pediatrique d'orientation-recours iranien

Diarrhoeagenic Escherichia coli can be considered as the most important etiologic agents of diarrhoea in the Islamic Republic of Iran, particularly in children. This study determined the frequency of diarrhoeagenic E. coli isolates collected from children with acute diarrhoea (n = 50) and a control...

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Veröffentlicht in:Eastern Mediterranean health journal 2013-07, Vol.19 (7), p.617
Hauptverfasser: Pourakbari, B, Heydari, H, Mahmoudi, S, Sabouni, F, Teymuri, M, Ferdosian, F, Ashtiani, M.T.H, Mamishi, S
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container_issue 7
container_start_page 617
container_title Eastern Mediterranean health journal
container_volume 19
creator Pourakbari, B
Heydari, H
Mahmoudi, S
Sabouni, F
Teymuri, M
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Ashtiani, M.T.H
Mamishi, S
description Diarrhoeagenic Escherichia coli can be considered as the most important etiologic agents of diarrhoea in the Islamic Republic of Iran, particularly in children. This study determined the frequency of diarrhoeagenic E. coli isolates collected from children with acute diarrhoea (n = 50) and a control group (n = 50) at an Iranian referral paediatric centre during a 1-year period. Using multiplex PCR, diarrhoeagenic E. coli was identified in 90% of the case group and 20% of controls. Enterotoxigenic E. coli was the most frequently identified pathotype in both groups (26% in cases; 10% in controls). Shiga toxin-producing E. coli was the second most isolated pathotype (17%), followed by enteroaggregative E. coli (12%). No enteroinvasive E. coli and enteropathogenic E. coli strains were recovered. More than 80% of isolates harboured the fimH gene. This high proportion of diarrhoeagenic E. coli and diversity of E. coli types highlights the need for enhanced surveillance of gastroenteritis agents in children in this country. Les souches d'Escherichia coli diarrheogenes peuvent etre considerees comme les agents etiologiques les plus importants a l'origine de diarrhees en Republique islamique d'Iran, notamment chez l'enfant. La presente etude a determine la frequence d'E. coli diarrheogenes a partir d'isolats recueillis chez des enfants souffrant de diarrhees aigues (n = 50) et dans un groupe temoin (n = 50) au sein d'un centre pediatrique d'orientation-recours iranien pendant un an. A l'aide de la PCR multiplexe, E. coli diarrheogene a ete identifie chez 90 % des patients et 20 % des temoins. E. coli enterotoxinogene etait le pathotype le plus frequemment identifie dans les deux groupes (26 % des cas ; 10 % des temoins). E. coli producteur de shiga-toxine etait le deuxieme pathotype le plus frequemment isole (17 %), suivi par E. coli enteroagglutinant (12 %). Aucune souche d'E. coli enteroenvahissant ni d'E. coli enteropathogene n'a ete decouverte. Plus de 80 % des isolats hebergeaient le gene fimH. La proportion elevee de souches E. coli diarrheogenes et la diversite des types d'E. colisoulignent la necessite d'une surveillance accrue des agents de gastro-enterites chez les enfants de ce pays.
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Les souches d'Escherichia coli diarrheogenes peuvent etre considerees comme les agents etiologiques les plus importants a l'origine de diarrhees en Republique islamique d'Iran, notamment chez l'enfant. La presente etude a determine la frequence d'E. coli diarrheogenes a partir d'isolats recueillis chez des enfants souffrant de diarrhees aigues (n = 50) et dans un groupe temoin (n = 50) au sein d'un centre pediatrique d'orientation-recours iranien pendant un an. A l'aide de la PCR multiplexe, E. coli diarrheogene a ete identifie chez 90 % des patients et 20 % des temoins. E. coli enterotoxinogene etait le pathotype le plus frequemment identifie dans les deux groupes (26 % des cas ; 10 % des temoins). E. coli producteur de shiga-toxine etait le deuxieme pathotype le plus frequemment isole (17 %), suivi par E. coli enteroagglutinant (12 %). Aucune souche d'E. coli enteroenvahissant ni d'E. coli enteropathogene n'a ete decouverte. Plus de 80 % des isolats hebergeaient le gene fimH. 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Les souches d'Escherichia coli diarrheogenes peuvent etre considerees comme les agents etiologiques les plus importants a l'origine de diarrhees en Republique islamique d'Iran, notamment chez l'enfant. La presente etude a determine la frequence d'E. coli diarrheogenes a partir d'isolats recueillis chez des enfants souffrant de diarrhees aigues (n = 50) et dans un groupe temoin (n = 50) au sein d'un centre pediatrique d'orientation-recours iranien pendant un an. A l'aide de la PCR multiplexe, E. coli diarrheogene a ete identifie chez 90 % des patients et 20 % des temoins. E. coli enterotoxinogene etait le pathotype le plus frequemment identifie dans les deux groupes (26 % des cas ; 10 % des temoins). E. coli producteur de shiga-toxine etait le deuxieme pathotype le plus frequemment isole (17 %), suivi par E. coli enteroagglutinant (12 %). Aucune souche d'E. coli enteroenvahissant ni d'E. coli enteropathogene n'a ete decouverte. Plus de 80 % des isolats hebergeaient le gene fimH. 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This study determined the frequency of diarrhoeagenic E. coli isolates collected from children with acute diarrhoea (n = 50) and a control group (n = 50) at an Iranian referral paediatric centre during a 1-year period. Using multiplex PCR, diarrhoeagenic E. coli was identified in 90% of the case group and 20% of controls. Enterotoxigenic E. coli was the most frequently identified pathotype in both groups (26% in cases; 10% in controls). Shiga toxin-producing E. coli was the second most isolated pathotype (17%), followed by enteroaggregative E. coli (12%). No enteroinvasive E. coli and enteropathogenic E. coli strains were recovered. More than 80% of isolates harboured the fimH gene. This high proportion of diarrhoeagenic E. coli and diversity of E. coli types highlights the need for enhanced surveillance of gastroenteritis agents in children in this country. Les souches d'Escherichia coli diarrheogenes peuvent etre considerees comme les agents etiologiques les plus importants a l'origine de diarrhees en Republique islamique d'Iran, notamment chez l'enfant. La presente etude a determine la frequence d'E. coli diarrheogenes a partir d'isolats recueillis chez des enfants souffrant de diarrhees aigues (n = 50) et dans un groupe temoin (n = 50) au sein d'un centre pediatrique d'orientation-recours iranien pendant un an. A l'aide de la PCR multiplexe, E. coli diarrheogene a ete identifie chez 90 % des patients et 20 % des temoins. E. coli enterotoxinogene etait le pathotype le plus frequemment identifie dans les deux groupes (26 % des cas ; 10 % des temoins). E. coli producteur de shiga-toxine etait le deuxieme pathotype le plus frequemment isole (17 %), suivi par E. coli enteroagglutinant (12 %). Aucune souche d'E. coli enteroenvahissant ni d'E. coli enteropathogene n'a ete decouverte. Plus de 80 % des isolats hebergeaient le gene fimH. La proportion elevee de souches E. coli diarrheogenes et la diversite des types d'E. colisoulignent la necessite d'une surveillance accrue des agents de gastro-enterites chez les enfants de ce pays.</abstract><cop>Alexandria</cop><pub>World Health Organization</pub><tpages>5</tpages></addata></record>
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subjects Age
Bacteria
Children & youth
Deoxyribonucleic acid
Developing countries
Diarrhea
Disease
DNA
E coli
Escherichia coli
Genes
Identification and classification
LDCs
Microbiology
Mortality
Studies
Teaching hospitals
title Diarrhoeagenic E. coli pathotypes in children with and without diarrhoea in an Iranian referral paediatrics centre/Pathotypes Escherichia coli diarrheogenes chez des enfants souffrant ou non de diarrhees dans un centre pediatrique d'orientation-recours iranien
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