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Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran

BACKGROUND: The presence and diversity of Staphylococcus species and their enterotoxin-encoding genes in foodstuffs have not been comprehensively studied in some developing countries. This study aimed to assess the frequency of Staphylococcus spp. and their related virulence factors in foodstuffs in...

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Autores principales: HOVEIDA, Laleh, ATAEI, Behrooz, AMIRMOZAFARI, Nour, NOORMOHAMMADI, Zahra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7152639/
https://www.ncbi.nlm.nih.gov/pubmed/32309228
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author HOVEIDA, Laleh
ATAEI, Behrooz
AMIRMOZAFARI, Nour
NOORMOHAMMADI, Zahra
author_facet HOVEIDA, Laleh
ATAEI, Behrooz
AMIRMOZAFARI, Nour
NOORMOHAMMADI, Zahra
author_sort HOVEIDA, Laleh
collection PubMed
description BACKGROUND: The presence and diversity of Staphylococcus species and their enterotoxin-encoding genes in foodstuffs have not been comprehensively studied in some developing countries. This study aimed to assess the frequency of Staphylococcus spp. and their related virulence factors in foodstuffs in Isfahan, Iran. METHODS: Overall, 139 foodstuff samples, collected from Isfahan City (center of Iran) from Sep 2015 to Oct 2016, were processed for the presence of Staphylococcus spp. using standard bacteriological procedures and sequence analysis of 16S rRNA gene. Antimicrobial susceptibilities and prevalence of mecA and toxin-encoded genes (sea, seb, sed, see and tsst(1)) were tested for all of the Staphylococcal isolates. RESULTS: Forty-four Gram-positive cocci were recovered from 139 dairy and meat samples. The most prevalent species were S. vitulinus 25.0% (11/44) and S. aureus 20.5% (9/44); respectively. The most prevalent antimicrobial resistance was noted towards penicillin, cefoxitin and tetracycline. The sec, sea, see and tsst1 genes were found in 19%, 9.5%, 3.5%, and 3.5% of the isolates, respectively. CONCLUSION: Numerous virulence factors were detected in different Staphylococcus spp. isolated from foodstuffs, more attention should be paid to the presence of the bacteria. Proper hygienic and management practices should be considered in order to increase food safety and prevent extra treatment costs.
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spelling pubmed-71526392020-04-19 Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran HOVEIDA, Laleh ATAEI, Behrooz AMIRMOZAFARI, Nour NOORMOHAMMADI, Zahra Iran J Public Health Original Article BACKGROUND: The presence and diversity of Staphylococcus species and their enterotoxin-encoding genes in foodstuffs have not been comprehensively studied in some developing countries. This study aimed to assess the frequency of Staphylococcus spp. and their related virulence factors in foodstuffs in Isfahan, Iran. METHODS: Overall, 139 foodstuff samples, collected from Isfahan City (center of Iran) from Sep 2015 to Oct 2016, were processed for the presence of Staphylococcus spp. using standard bacteriological procedures and sequence analysis of 16S rRNA gene. Antimicrobial susceptibilities and prevalence of mecA and toxin-encoded genes (sea, seb, sed, see and tsst(1)) were tested for all of the Staphylococcal isolates. RESULTS: Forty-four Gram-positive cocci were recovered from 139 dairy and meat samples. The most prevalent species were S. vitulinus 25.0% (11/44) and S. aureus 20.5% (9/44); respectively. The most prevalent antimicrobial resistance was noted towards penicillin, cefoxitin and tetracycline. The sec, sea, see and tsst1 genes were found in 19%, 9.5%, 3.5%, and 3.5% of the isolates, respectively. CONCLUSION: Numerous virulence factors were detected in different Staphylococcus spp. isolated from foodstuffs, more attention should be paid to the presence of the bacteria. Proper hygienic and management practices should be considered in order to increase food safety and prevent extra treatment costs. Tehran University of Medical Sciences 2020-01 /pmc/articles/PMC7152639/ /pubmed/32309228 Text en Copyright© Iranian Public Health Association & Tehran University of Medical Sciences http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
HOVEIDA, Laleh
ATAEI, Behrooz
AMIRMOZAFARI, Nour
NOORMOHAMMADI, Zahra
Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title_full Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title_fullStr Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title_full_unstemmed Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title_short Species Variety, Antibiotic Susceptibility Patterns and Prevalence of Enterotoxin Genes in Staphylococci Isolated from Foodstuff in Central Iran
title_sort species variety, antibiotic susceptibility patterns and prevalence of enterotoxin genes in staphylococci isolated from foodstuff in central iran
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7152639/
https://www.ncbi.nlm.nih.gov/pubmed/32309228
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