Prevalence of ebp A, ebp B and ebp C genes in Enterococcus faecalis producing biofilm isolated from meat in Shahrekord

Document Type : Original article

Authors

1 MSc in Microbiology, Department of Microbiology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

2 Associate Professor, Department of Microbiology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

3 Professor, Department of Food Hygiene, Faculty of Veterinary Medicine, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

Abstract

Introduction: Enterococcus, as a bacterium resistant to most antibiotics, is capable of releasing resistant genes to other species. Due to its ability to form biofilms, it has high pathogenicity. The purpose of this study was to investigate the frequency of Enterococcus faecalis in beef meat sold in Shahrekord retail markets and to investigate the relationship between ebp-A, ebp-B and ebp-C genes in biofilm-producing Enterococcus faecalis isolated from meat.
Materials and Methods: In this descriptive cross-sectional study, 80 meat samples were examined by biochemical and molecular methods. Detection of Enterococcus faecalis ebp-A, ebp-B and ebp-C genes was performed in the presence of specific primers. Statistical analysis was performed using Prism7 software and Fisher’s exact test.
Results: Of the 80 samples, meat samples were detected based on biochemical responses in 31 isolates of Enterococcus faecalis. Using the micro titer plate method, in 25 isolates (80.64%) biofilms were produced. ebp-A gene in 28 isolates (32.90%), ebp-B gene in 10 isolates (25.23%) and ebp-C gene in none of the isolates (0%) were not reported.
Conclusion: Foodborne diseases are one of the common problems in public health. Bacteria are the most important causes of infections and food poisoning. To prevent microbial contamination of foods, training individuals, observing health and supervision in the preparation, transportation, storage and delivery of foods are essential.

Keywords


1. Egli T, Köster W, Meile L. Pathogenic microbes in water and food: changes and challenges. FEMS Microbiol Rev. 2002; 26(2):111-2.
2. Eckburg PB, Bik EM, Bernstein CN, Purdom E, Dethlefsen L, Sargent M, et al. Diversity of the human intestinal microbial flora. Science. 2005; 308(5728):1635-8.
3. Franz CM, Stiles ME, Schleifer KH, Holzapfel WH. Enterococci in foods a conundrum for food safety. Int J Food Microbiol. 2003; 888(2-3):105-22.
4. Giraffa G. Enterococci from foods. FEMS Microbiol Rev. 2002; 26(2):163-71.
5. Lebreton F, Willems RJ, Gilmore MS. Enterococcusdiversity, origins in nature, and gut Colonization. Enterococci. 2014; 2:1-59.
6. Rahimi F, Talebi M, Saifi M, Pourshafie MR. Geneticand biochemical study of Enterococci species isolated from Sewage Tehran with an emphasis on strains has gene vanA and vanB. Iran J Infect Dis Trop Med. 2008;
13(42):31-7. [in Persian]
7. Fisher K, Phillips C. The ecology, epidemiology and virulence of Enterococcus. Microbiology. 2009; 155(6):1749-57.
8. Alipour M, Hajiesmaili R, Talebjannat M, Yahyapour Y. Identification and antimicrobial resistance of Enterococcus spp. isolated from the river and coastal waters in northern Iran. Sci World J. 2014; 2014:287458.
9. Talebi M, Asghari Moghadam N, Mamooii Z, Enayati M, Saifi M, Pourshafie MR. Antibiotic resistance and biofilm formation of Enterococcus faecalis in patient and environmental Samples. Jundishapur J Microbiol. 2015; 8(10):e23349.
10. Nallapareddy SR, Sillanpää J, Mitchell J, Singh KV, Chowdhury SA, Weinstock GM, et al. Conservation of Ebp-type pilus genes among Enterococci and demonstration of their role in adherence of
Enterococcus faecalis to human platelets. Infect Immun. 2011; 79(7):2911-20.
11. Nielsen HV, Flores-Mireles AL, Kaua AL, Kline KA, Pinkner JS, Neiers F, et al. Pilin and sortase residues critical for endocarditis and biofilm associated pilus biogenesis in Enterococcus faecalis. J Bacteriol. 2013; 195(19):4484-95.
12. Chajęcka-Wierzchowska W, Zadernowska A, Nalepa A, Laniewska A, TrokenheimL. Occurrence and antibiotic resistance of enterococci in ready to eat food of animal origin. Afr J of Microbiol Res. 2012; 6(39):6773-80.
13. Trivedi K, Cupakova S, Karpiskova R. Virulence factors and antibiotic resistance in enterococci isolated from food-stuffs. Veterinarni Med. 2011; 56(7):352-7.
14. Bakhshi Z, Bakhshi M. Practical diagnostic bacteria. 1st ed. Tehran: Jafari Publications; 2009. P. 82-3. [in Persian]
15. Gapeleh F, Mehrabi MR, Mirzaee M, Labibzadeh M. Biofilm formation and presence of Esp and cylA genes Enterococcus faecalis isolated from hospital infection. Clin Microbiol Case Reports. 2015; 4:2.
16. Sambrook J, Russell DW. Molecular cloning: a laboratory manual. New York: Cold Spring Harbor Laboratory Press; 1989. P. 58-152.
17. Gomes B, Esteves C, Palazzo I, Darini A, Felis G, Sechi L, et al. Prevalence and characterization of Enterococcus spp. isolated from Brazilian foods. Food Microbiol. 2008; 25(5):668-75.
18. Hayes JR, English LL, Carter PJ, Proescholdt T, Lee KY, Wagner DD, et al. Prevalence and antimicrobial resistance of Enterococcus species isolated from retail meats. Appl Environ Microbiol. 2003; 69(12):7153-60.
19. Johnston LM, Jaykus LA. Antimicrobial resistance of Enterococcus species isolated from produce. Appl Environ Microbiol. 2004; 70(5):3133-7.
20. Camargo CH, Nascimento AB, Lee SH, Júnior AF, Kaneno K, Rall VM. Prevalence and phenotypic characterization of Enterococcus spp. isolated from food in Brazil. Braz J Microbiol. 2014; 45(1):111-5.
21. Barbosa J, Gibbs PA, Teixeira P. Virulence factors among Enterococci isolated from traditional fermented meat products produced in the north of Portugal. Food Control. 2010; 21(5):651-6.
22. Toledo-Arana A, Valle J, Solano C, Arrizubieta MJ, Cucarella C, Lamata M, et al. The enterococcal surface protein, Esp, is involved in Enterococcusfaecalis biofilm formation. Appl Environ Microbiol. 2001; 67(5):4538-45.
23. van Merode AE, van der Mei HC, Busscher HJ, Krom BP. Influence of culture heterogeneity in cell surface
charge on adhesion and biofilm formation by Enterococcus faecalis. J Bacteriol. 2006; 188(7):2421-6.
24. An YH, Friedman RJ. Concise review of mechanisms of bacterial adhesion to biomaterial surfaces. J Biomed Mater Res. 1998; 43(3):338-48.
25. Nallapareddy SR, Singh KV, Sillanpaa J, Danielle A, Höök M, Erlandsen SL, et al. Endocarditis and biofilm-associated pili of Enterococcus faecalis. J Clin Invest. 2006; 116(10):2799-807.
26. Nielsen HV, Flores-Mireles AL, Kaua AL, Kline KA, Pinkner JS, Neiers F, et al. Pilin and sortase residues critical for endocarditis and biofilm associated pilus biogenesis in Enterococcus faecalis. J Bacteriol. 2013; 195(19):4484-95.