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Medeiros,A.W.; Pereira,R.I.; Oliveira,D.V.; Martins,P.D.; d'Azevedo,P.A.; Van der Sand,S.; Frazzon,J.; Frazzon,A.P.G. |
The present report aimed to perform a molecular epidemiological survey by investigating the presence of virulence factors in E. faecalis isolated from different human clinical (n = 57) and food samples (n = 55) in Porto Alegre, Brazil, collected from 2006 to 2009. In addition, the ability to form biofilm in vitro on polystyrene and the β-haemolytic and gelatinase activities were determined. Clinical strains presented a higher prevalence of aggregation substance (agg), enterococcal surface protein (esp) and cytolysin (cylA) genes when compared with food isolates. The esp gene was found only in clinical strains. On the other hand, the gelatinase (gelE) and adherence factor (ace) genes had similar prevalence among the strains, showing the widespread... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Virulence determinants; Clinical enterococci; Food enterococci; Biofilm formation. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100047 |
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Cassenego,A.P.V.; d'Azevedo,P.A.; Ribeiro,A.M.L.; Frazzon,J.; Sand,S.T.Van Der; Frazzon,A. P. G.. |
Resistant bacteria in animal can be spread to environment and to humans. Poultry feed and infections caused by Eimeria spp. are important factors in determining the intestinal microbial communities. The aim of this study was to verify the prevalence of species and antimicrobial susceptibility of Enterococcus isolated from broilers fed with different supplements and infected experimentally with Eimeria spp. Broilers were divided in eight groups, fed with diets supplemented with a combination of antimicrobial, ionophore-coccidiostatics, probiotic, essential oil. At 14 days old all birds, except the control, received a solution containing oocysts of Eimeria spp. Samples of cloacal swabs from broilers were collected. A total of 240 Enterococcus sp. strains... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterococcus sp.; Broilers feed; Antimicrobial resistance; Resistance genes. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200012 |
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