Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility
Introduction: Little information is available regarding the significance of enteroaggregative Escherichia coli (EAEC) in pediatric diarrhea in Egypt. Methodology: Escherichia coli was isolated from stool samples of 62 diarrheic and 43 non-diarrheic (control) Egyptian children. Samples were screened...
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The Journal of Infection in Developing Countries
2014-05-01
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| Series: | Journal of Infection in Developing Countries |
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| Online Access: | https://jidc.org/index.php/journal/article/view/4077 |
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| author | Mostafa Mohamed M Ali Salwa Fouad Ahmed John D Klena Zienat Kamel Mohamed Tarek AA Moussa Khalifa Sifaw Ghenghesh |
| author_facet | Mostafa Mohamed M Ali Salwa Fouad Ahmed John D Klena Zienat Kamel Mohamed Tarek AA Moussa Khalifa Sifaw Ghenghesh |
| author_sort | Mostafa Mohamed M Ali |
| collection | DOAJ |
| description | Introduction: Little information is available regarding the significance of enteroaggregative Escherichia coli (EAEC) in pediatric diarrhea in Egypt.
Methodology: Escherichia coli was isolated from stool samples of 62 diarrheic and 43 non-diarrheic (control) Egyptian children. Samples were screened for genes specific for enteroaggregative E. coli (EAEC), enteropathogenic E. coli (EPEC), enterotoxigenic E. coli (ETEC), Shiga toxin-producing E. coli (STEC), and enteroinvasive E. coli (EIEC) using polymerase chain reaction (PCR). Diarrheagenic E. coli were grouped phylogenetically using PCR and tested for their susceptibility to antibiotics using the disk diffusion method. Isolates designated as EAEC were examined for eight virulence factors (VFs) using PCR.
Results: EAEC was detected in 19 (30.7%) and 4 (9.3%), EPEC in 2 (3.2%) and 1 (2.3%), and ETEC in 2 (3.2%) and 0 (0.0%) diarrheic and control children, respectively; STEC and EIEC were not detected. Only EAEC was significantly isolated from diarrheic children compared with controls (p < 0.01, OR = 4.31).Three or more VFs (multivirulent isolates) were found in 52.6% and 50% of EAEC isolated from diarrheic children and controls, respectively. More than 73% (17/23) of EAEC isolates were identified as belonging to phylogenetic group D. Multiple-antibiotic resistance (resistance to three or more drugs) was observed in more than 91% of EAEC.
Conclusions: Multivirulent EAEC is a significant causative agent of pediatric diarrhea in Egypt, with the majority of isolated EAEC belong to phylogenetic group D. Multiple-antibiotic resistance among EAEC has the potential to be a serious public health problem for the country.
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| format | Article |
| id | doaj-art-06285aff003c4183a92e71029cbbec90 |
| institution | OA Journals |
| issn | 1972-2680 |
| language | English |
| publishDate | 2014-05-01 |
| publisher | The Journal of Infection in Developing Countries |
| record_format | Article |
| series | Journal of Infection in Developing Countries |
| spelling | doaj-art-06285aff003c4183a92e71029cbbec902025-08-20T02:14:19ZengThe Journal of Infection in Developing CountriesJournal of Infection in Developing Countries1972-26802014-05-0180510.3855/jidc.4077Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibilityMostafa Mohamed M Ali0Salwa Fouad Ahmed1John D Klena2Zienat Kamel Mohamed3Tarek AA Moussa4Khalifa Sifaw Ghenghesh5Faculty of Science, Cairo University, EgyptClinical Trials Program, NAMRU-3, Cairo, EgyptClinical Trials Program, NAMRU-3, Cairo, EgyptFaculty of Science, Cairo University, EgyptFaculty of Science, Cairo University, EgyptFaculty of Medicine, University of Tripoli, Tripoli, LibyaIntroduction: Little information is available regarding the significance of enteroaggregative Escherichia coli (EAEC) in pediatric diarrhea in Egypt. Methodology: Escherichia coli was isolated from stool samples of 62 diarrheic and 43 non-diarrheic (control) Egyptian children. Samples were screened for genes specific for enteroaggregative E. coli (EAEC), enteropathogenic E. coli (EPEC), enterotoxigenic E. coli (ETEC), Shiga toxin-producing E. coli (STEC), and enteroinvasive E. coli (EIEC) using polymerase chain reaction (PCR). Diarrheagenic E. coli were grouped phylogenetically using PCR and tested for their susceptibility to antibiotics using the disk diffusion method. Isolates designated as EAEC were examined for eight virulence factors (VFs) using PCR. Results: EAEC was detected in 19 (30.7%) and 4 (9.3%), EPEC in 2 (3.2%) and 1 (2.3%), and ETEC in 2 (3.2%) and 0 (0.0%) diarrheic and control children, respectively; STEC and EIEC were not detected. Only EAEC was significantly isolated from diarrheic children compared with controls (p < 0.01, OR = 4.31).Three or more VFs (multivirulent isolates) were found in 52.6% and 50% of EAEC isolated from diarrheic children and controls, respectively. More than 73% (17/23) of EAEC isolates were identified as belonging to phylogenetic group D. Multiple-antibiotic resistance (resistance to three or more drugs) was observed in more than 91% of EAEC. Conclusions: Multivirulent EAEC is a significant causative agent of pediatric diarrhea in Egypt, with the majority of isolated EAEC belong to phylogenetic group D. Multiple-antibiotic resistance among EAEC has the potential to be a serious public health problem for the country. https://jidc.org/index.php/journal/article/view/4077Enteroaggregative Escherichia coliVirulence genesPhylogenetic groupingAntibiotic susceptibilityDiarrheaChildren |
| spellingShingle | Mostafa Mohamed M Ali Salwa Fouad Ahmed John D Klena Zienat Kamel Mohamed Tarek AA Moussa Khalifa Sifaw Ghenghesh Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility Journal of Infection in Developing Countries Enteroaggregative Escherichia coli Virulence genes Phylogenetic grouping Antibiotic susceptibility Diarrhea Children |
| title | Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility |
| title_full | Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility |
| title_fullStr | Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility |
| title_full_unstemmed | Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility |
| title_short | Enteroaggregative Escherichia coli in diarrheic children in Egypt: molecular characterization and antimicrobial susceptibility |
| title_sort | enteroaggregative escherichia coli in diarrheic children in egypt molecular characterization and antimicrobial susceptibility |
| topic | Enteroaggregative Escherichia coli Virulence genes Phylogenetic grouping Antibiotic susceptibility Diarrhea Children |
| url | https://jidc.org/index.php/journal/article/view/4077 |
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