Veterinary Medicine and Science, Volume (9), No (1), Year (2023-1) , Pages (226-233)

Title : ( Molecular detection and occurrence of vancomycin resistance genes (van A, B, C1, C2/C3) among Enterococcus species isolated from farm ostriches )

Authors: Sara Mirzaei , Isa Faghiri , Mahdi Askari Badouei , Seyed Ahmad Madani ,

Citation: BibTeX | EndNote

Abstract

Background: Evaluating the prevalence of vancomycin resistance genes (van genes) in enterococcal isolates from food-producing animals is an important public health issue because of the possibility of resistance genes spread to human. Objectives: The present study aimed to determine the occurrence of vancomycin resistance genes among Enterococcus species obtained from ostrich faecal samples. Methods: One hundred and twenty-five faecal samples of apparently healthy ostriches from five different farms were investigated. Genes encoding vancomycin resistance were studied by multiplex-PCR, and susceptibility to six antibiotics was evaluated by disk-diffusion method. Results: In total, 107 Enterococcus spp. isolates were obtained and confirmed by biochemical and molecular tests. Enterococcus faecium was the prevailing species (56 isolates of 107; 52.3%), followed by E. hirae (24 isolates; 22.4%) and E. gallinarum (12 isolates; 11.2%). Of the 107 recovered isolates, 44% harboured at least a type of van genes. vanA, vanC2/3 and vanC1 were identified in 34 (31.7%), 13 isolates (12.1%) and 4 (3.7%) isolates respectively. Additionally, four isolates (E. gallinarum, E. rafinosus) co-harboured the the vanA and vanC1 or vanA and vanC2/3. Enterococcus faecium and Enterococcus hirae strainswith the vanA genotypewere the most frequent van-carrying enterococci from ostrich faecal samples. Among van-carrying enterococcal isolates, 23.4% were phenotypically resistant to vancomycin. This study revealed a relatively high prevalence (44%) of van-carrying enterococci in ostrich faecal samples. Conclusions: Results of the present study suggest that ostrich faeces could be considered as a reservoir of vancomycin resistance genes, especially vanA containing enterococci that could be potentially transferred to human through the food chain.

Keywords

, enterococci, ostrich, vanA, vanC, vancomycin
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@article{paperid:1093337,
author = {سارا میرزایی and عیسی فقیری and Askari Badouei, Mahdi and سید احمد مدنی},
title = {Molecular detection and occurrence of vancomycin resistance genes (van A, B, C1, C2/C3) among Enterococcus species isolated from farm ostriches},
journal = {Veterinary Medicine and Science},
year = {2023},
volume = {9},
number = {1},
month = {January},
issn = {2053-1095},
pages = {226--233},
numpages = {7},
keywords = {enterococci; ostrich; vanA; vanC; vancomycin},
}

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%0 Journal Article
%T Molecular detection and occurrence of vancomycin resistance genes (van A, B, C1, C2/C3) among Enterococcus species isolated from farm ostriches
%A سارا میرزایی
%A عیسی فقیری
%A Askari Badouei, Mahdi
%A سید احمد مدنی
%J Veterinary Medicine and Science
%@ 2053-1095
%D 2023

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