Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction

Introduction: Increasing antimicrobial resistance of enteric pathogens has attractedattention mainly in developing countries where the prevalence of acute diarrheal diseasecontinues to be major cause of mortality and morbidity. Diarrheagenic pathotypes of E.coli, enterotoxigenic (ETEC) and enteropat...

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Main Authors: Chávez-Bravo Edith, Rivera-Tapia José Antonio, Castañeda-Roldán Elsa Iracena, Gil-Juárez Constantino, Ochoa-Huilot Miguel Ángel, Cedillo-Ramírez María Lilia
Format: Article
Language:Spanish
Published: Universidad de Cartagena 2012-06-01
Series:Revista Ciencias Biomédicas
Subjects:
Online Access:http://www.revistacienciasbiomedicas.com/index.php/revciencbiomed/article/view/172/137
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language Spanish
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author Chávez-Bravo Edith
Rivera-Tapia José Antonio
Castañeda-Roldán Elsa Iracena
Gil-Juárez Constantino
Ochoa-Huilot Miguel Ángel
Cedillo-Ramírez María Lilia
spellingShingle Chávez-Bravo Edith
Rivera-Tapia José Antonio
Castañeda-Roldán Elsa Iracena
Gil-Juárez Constantino
Ochoa-Huilot Miguel Ángel
Cedillo-Ramírez María Lilia
Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
Revista Ciencias Biomédicas
E. coli
EPEC
ETEC
Antibiotics
Resistance.
author_facet Chávez-Bravo Edith
Rivera-Tapia José Antonio
Castañeda-Roldán Elsa Iracena
Gil-Juárez Constantino
Ochoa-Huilot Miguel Ángel
Cedillo-Ramírez María Lilia
author_sort Chávez-Bravo Edith
title Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
title_short Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
title_full Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
title_fullStr Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
title_full_unstemmed Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reaction
title_sort antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia coli detected in clinical specimens by polymerase chain reaction
publisher Universidad de Cartagena
series Revista Ciencias Biomédicas
issn 2215-7840
publishDate 2012-06-01
description Introduction: Increasing antimicrobial resistance of enteric pathogens has attractedattention mainly in developing countries where the prevalence of acute diarrheal diseasecontinues to be major cause of mortality and morbidity. Diarrheagenic pathotypes of E.coli, enterotoxigenic (ETEC) and enteropathogenic (EPEC) are associated with this disease.Objective: To determine antimicrobial susceptibility of enterotoxigenic and enteropathogenicEscherichia coli in clinical samples from patients with diarrhea.Material and methods: Fifty eight strains of E. coli isolated from children under five years,and forty five from adults were analyzed by PCR; we used disk diffusion method to evaluateantimicrobial susceptibility to 12 antibiotics in both, typified pathotypes and strains of E.coli without any of the tested genes (E. coli SNG).Results: Enteropathogenic Escherichia coli was found in 41% of samples andenterotoxigenic Escherichia coli in 37%; the former predominating in strains isolatedfrom adults (42%) and the last in strains isolated from infants (43%). The most commonresistance markers were carbenicillin (83%), ampicillin (70%) and trimethoprimsulfamethoxazole(49%). We found a high percentage of strains (87%) resistant to at leastone antibiotic and multiresistance of three to six antibiotics was found in 62%.In strains isolated from children, multiresistance was found in 63% and 52% for EPEC andETEC, and strains isolated from adults 53% and 71% respectively.Conclusion: Strains of E. coli showed similar resistance profiles, predominatingmultiresistance in EPEC, ETEC and E. coli SNG (four antibiotics), reflecting frequent exposureof enteropathogens to antibiotics, so increasing resistance reduce effectiveness of availableantimicrobials.RESUMEN:Introducción: la creciente resistencia antimicrobiana de patógenos entéricos hallamado la atención principalmente en países en vías de desarrollo, donde la prevalenciade enfermedades diarreicas agudas sigue causando grandes índices de mortalidad ymorbilidad. Los patotipos diarrogénicos de E.coli: EPEC y ETEC se encuentran asociadosa este tipo de enfermedades.Objetivo: determinar la susceptibilidad antimicrobiana de los patogrupos EPEC y ETECen muestras clínicas de pacientes con cuadro diarreico.Material y métodos: mediante la técnica de PCR se caracterizaron 58 cepas de E.coliaisladas de niños menores a cinco años y en 45 cepas de adultos, se utilizó la técnicade difusión en disco para evaluar la susceptibilidad antimicrobiana a doce antibióticostanto en los patotipos tipificados como en las cepas E.coli sin ninguno de los genes (E.coli SNg) testados.Resultados: EPEC se halló en un 41% y ETEC en un 37%, predominando EPEC (42%)en las cepas aisladas de adultos y ETEC (43%) en las cepas aisladas de infantes. Losmarcadores de resistencia más frecuentes fueron carbenicilina (83%), ampicilina (70%)y trimetoprim con sulfametoxazol (49%). Se encontró un elevado porcentaje (87%) decepas resistentes al menos a un antibiótico, donde la multiresistencia de tres hastaseis antibióticos representó el 62%. En las cepas aisladas de niños se encontró unamultiresistencia de EPEC (63%) y ETEC (52%) y en las cepas aisladas de adultos un53% y 71% para EPEC y ETEC respectivamente.Conclusión: los aislados de E. coli presentaron perfiles de resistencia similares,predominando la multiresistencia en EPEC, ETEC y E. coli SNg (cuatro antibióticos)reflejando la frecuente exposición de los antibióticos hacia los enteropatógenos y almismo tiempo resalta que el incremento de la resistencia incide en la disminución deantimicrobianos eficaces disponibles.
topic E. coli
EPEC
ETEC
Antibiotics
Resistance.
url http://www.revistacienciasbiomedicas.com/index.php/revciencbiomed/article/view/172/137
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spelling doaj-b67b3bff25444574950c39c6ce60d5002021-07-02T01:10:11ZspaUniversidad de CartagenaRevista Ciencias Biomédicas2215-78402012-06-01314048Antimicrobial multiresistance of enterotoxigenic and enteropathogenic escherichia Coli detected in clinical specimens by polymerase chain reactionChávez-Bravo EdithRivera-Tapia José AntonioCastañeda-Roldán Elsa IracenaGil-Juárez ConstantinoOchoa-Huilot Miguel ÁngelCedillo-Ramírez María LiliaIntroduction: Increasing antimicrobial resistance of enteric pathogens has attractedattention mainly in developing countries where the prevalence of acute diarrheal diseasecontinues to be major cause of mortality and morbidity. Diarrheagenic pathotypes of E.coli, enterotoxigenic (ETEC) and enteropathogenic (EPEC) are associated with this disease.Objective: To determine antimicrobial susceptibility of enterotoxigenic and enteropathogenicEscherichia coli in clinical samples from patients with diarrhea.Material and methods: Fifty eight strains of E. coli isolated from children under five years,and forty five from adults were analyzed by PCR; we used disk diffusion method to evaluateantimicrobial susceptibility to 12 antibiotics in both, typified pathotypes and strains of E.coli without any of the tested genes (E. coli SNG).Results: Enteropathogenic Escherichia coli was found in 41% of samples andenterotoxigenic Escherichia coli in 37%; the former predominating in strains isolatedfrom adults (42%) and the last in strains isolated from infants (43%). The most commonresistance markers were carbenicillin (83%), ampicillin (70%) and trimethoprimsulfamethoxazole(49%). We found a high percentage of strains (87%) resistant to at leastone antibiotic and multiresistance of three to six antibiotics was found in 62%.In strains isolated from children, multiresistance was found in 63% and 52% for EPEC andETEC, and strains isolated from adults 53% and 71% respectively.Conclusion: Strains of E. coli showed similar resistance profiles, predominatingmultiresistance in EPEC, ETEC and E. coli SNG (four antibiotics), reflecting frequent exposureof enteropathogens to antibiotics, so increasing resistance reduce effectiveness of availableantimicrobials.RESUMEN:Introducción: la creciente resistencia antimicrobiana de patógenos entéricos hallamado la atención principalmente en países en vías de desarrollo, donde la prevalenciade enfermedades diarreicas agudas sigue causando grandes índices de mortalidad ymorbilidad. Los patotipos diarrogénicos de E.coli: EPEC y ETEC se encuentran asociadosa este tipo de enfermedades.Objetivo: determinar la susceptibilidad antimicrobiana de los patogrupos EPEC y ETECen muestras clínicas de pacientes con cuadro diarreico.Material y métodos: mediante la técnica de PCR se caracterizaron 58 cepas de E.coliaisladas de niños menores a cinco años y en 45 cepas de adultos, se utilizó la técnicade difusión en disco para evaluar la susceptibilidad antimicrobiana a doce antibióticostanto en los patotipos tipificados como en las cepas E.coli sin ninguno de los genes (E.coli SNg) testados.Resultados: EPEC se halló en un 41% y ETEC en un 37%, predominando EPEC (42%)en las cepas aisladas de adultos y ETEC (43%) en las cepas aisladas de infantes. Losmarcadores de resistencia más frecuentes fueron carbenicilina (83%), ampicilina (70%)y trimetoprim con sulfametoxazol (49%). Se encontró un elevado porcentaje (87%) decepas resistentes al menos a un antibiótico, donde la multiresistencia de tres hastaseis antibióticos representó el 62%. En las cepas aisladas de niños se encontró unamultiresistencia de EPEC (63%) y ETEC (52%) y en las cepas aisladas de adultos un53% y 71% para EPEC y ETEC respectivamente.Conclusión: los aislados de E. coli presentaron perfiles de resistencia similares,predominando la multiresistencia en EPEC, ETEC y E. coli SNg (cuatro antibióticos)reflejando la frecuente exposición de los antibióticos hacia los enteropatógenos y almismo tiempo resalta que el incremento de la resistencia incide en la disminución deantimicrobianos eficaces disponibles.http://www.revistacienciasbiomedicas.com/index.php/revciencbiomed/article/view/172/137E. coliEPECETECAntibioticsResistance.