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Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR

In recent years, Salmonella enterica serovar Enteritidis has been a primary cause of human salmonellosis in many countries. The major objective of this study was to investigate genetic diversity among Salmonella Enteritidis strains from different origins (food and human) by Enterobacterial Repetitiv...

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Autores principales: Fardsanei, F., Nikkhahi, F., Bakhshi, B., Zahraei Salehi, T., Asrafi Tamai, I., Soltan Dallal, M.M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5021763/
https://www.ncbi.nlm.nih.gov/pubmed/27656286
http://dx.doi.org/10.1016/j.nmni.2016.07.016
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author Fardsanei, F.
Nikkhahi, F.
Bakhshi, B.
Zahraei Salehi, T.
Asrafi Tamai, I.
Soltan Dallal, M.M.
author_facet Fardsanei, F.
Nikkhahi, F.
Bakhshi, B.
Zahraei Salehi, T.
Asrafi Tamai, I.
Soltan Dallal, M.M.
author_sort Fardsanei, F.
collection PubMed
description In recent years, Salmonella enterica serovar Enteritidis has been a primary cause of human salmonellosis in many countries. The major objective of this study was to investigate genetic diversity among Salmonella Enteritidis strains from different origins (food and human) by Enterobacterial Repetitive Intergenic Consensus (ERIC) -PCR, as well as to assess their plasmid profiling and antimicrobial resistance. A total of 30 Salmonella Enteritidis isolates, 15 from food samples (chicken, lamb, beef and duck meats) and 15 from clinical samples were collected in Tehran. Identification of isolates as Salmonella was confirmed by using conventional standard biochemical and serological tests. Multiplex-PCR was used for serotyping of isolates to identify Salmonella Enteritidis. Antimicrobial susceptibility testing to 16 agents founds drug resistance patterns among Salmonella Enteritidis isolates. No resistance was observed to cephalexin, ceftriaxone, ceftazidime and cefotaxime, ciprofloxacin, imipenem or meropenem, chloramphenicol and gentamicin. The highest resistance (96.7%) was observed to nitrofurantoin. Seven plasmid profiles (P1–P7) were detected, and a 68-kb plasmid was found in all isolates. Two different primers; ERIC and (GTG)(5) were used for genotyping, which each produced four profiles. The majority of clinical and food isolates fell into two separate common types (CTs) with a similar percentage of 95% by ERIC-PCR. Using primer (GTG)(5), 29 isolates incorporated in three CTs with 70% of isolates showing a single banding pattern. Limited genetic diversity among human and food isolates of Salmonella Enteritidis may indicate that contaminated foods were possibly the source of human salmonellosis. These results confirmed that ERIC-PCR genotyping has limited discriminatory power for Salmonella Enteritidis of different origin.
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spelling pubmed-50217632016-09-21 Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR Fardsanei, F. Nikkhahi, F. Bakhshi, B. Zahraei Salehi, T. Asrafi Tamai, I. Soltan Dallal, M.M. New Microbes New Infect Original Article In recent years, Salmonella enterica serovar Enteritidis has been a primary cause of human salmonellosis in many countries. The major objective of this study was to investigate genetic diversity among Salmonella Enteritidis strains from different origins (food and human) by Enterobacterial Repetitive Intergenic Consensus (ERIC) -PCR, as well as to assess their plasmid profiling and antimicrobial resistance. A total of 30 Salmonella Enteritidis isolates, 15 from food samples (chicken, lamb, beef and duck meats) and 15 from clinical samples were collected in Tehran. Identification of isolates as Salmonella was confirmed by using conventional standard biochemical and serological tests. Multiplex-PCR was used for serotyping of isolates to identify Salmonella Enteritidis. Antimicrobial susceptibility testing to 16 agents founds drug resistance patterns among Salmonella Enteritidis isolates. No resistance was observed to cephalexin, ceftriaxone, ceftazidime and cefotaxime, ciprofloxacin, imipenem or meropenem, chloramphenicol and gentamicin. The highest resistance (96.7%) was observed to nitrofurantoin. Seven plasmid profiles (P1–P7) were detected, and a 68-kb plasmid was found in all isolates. Two different primers; ERIC and (GTG)(5) were used for genotyping, which each produced four profiles. The majority of clinical and food isolates fell into two separate common types (CTs) with a similar percentage of 95% by ERIC-PCR. Using primer (GTG)(5), 29 isolates incorporated in three CTs with 70% of isolates showing a single banding pattern. Limited genetic diversity among human and food isolates of Salmonella Enteritidis may indicate that contaminated foods were possibly the source of human salmonellosis. These results confirmed that ERIC-PCR genotyping has limited discriminatory power for Salmonella Enteritidis of different origin. Elsevier 2016-08-04 /pmc/articles/PMC5021763/ /pubmed/27656286 http://dx.doi.org/10.1016/j.nmni.2016.07.016 Text en © 2016 The Authors. Published by Elsevier Ltd on behalf of European Society of Clinical Microbiology and Infectious Diseases. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Fardsanei, F.
Nikkhahi, F.
Bakhshi, B.
Zahraei Salehi, T.
Asrafi Tamai, I.
Soltan Dallal, M.M.
Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title_full Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title_fullStr Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title_full_unstemmed Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title_short Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)(5)-PCR and ERIC-PCR
title_sort molecular characterization of salmonella enterica serotype enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (gtg)(5)-pcr and eric-pcr
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5021763/
https://www.ncbi.nlm.nih.gov/pubmed/27656286
http://dx.doi.org/10.1016/j.nmni.2016.07.016
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