First investigation of Staphylococcus argenteus in a Brazilian collections of S. aureus isolated from bovine mastitis

BACKGROUND: Staphylococcus argenteus is a new specie positive coagulase staphylococci. We investigate the presence of S. argenteus in isolates previously classified as S. aureus, obtained from the milk of cows with mastitis in Brazil. RESULTS: Among 856 S. aureus tested in chocolate agar, tryptone s...

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Detalles Bibliográficos
Autores principales: Rossi, Bruna F., Bonsaglia, Érika C. R., Castilho, Ivana G., Dantas, Stéfani T. A., Langoni, Hélio, Pantoja, José C. F., Júnior, Ary Fernandes, Gonçalves, Juliano L., Santos, Marcos V., Mota, Rinaldo A., Rall, Vera L. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7372812/
https://www.ncbi.nlm.nih.gov/pubmed/32690007
http://dx.doi.org/10.1186/s12917-020-02472-7
Descripción
Sumario:BACKGROUND: Staphylococcus argenteus is a new specie positive coagulase staphylococci. We investigate the presence of S. argenteus in isolates previously classified as S. aureus, obtained from the milk of cows with mastitis in Brazil. RESULTS: Among 856 S. aureus tested in chocolate agar, tryptone soya agar and salt egg yolk agar, white or colorless colonies were observed in 185 (21.6%) isolates. Regarding the ctrOPQMN operon, 111 (60%) presented the complete cluster. Despite some missing genes in this cluster, the remaining strains (74) were confirmed as S. aureus using the nrps gene. CONCLUSIONS: As far as we know, this is the first review of S. aureus collection in Brazil and S. argenteus does not appear to be a significant problem in Brazilian herds.

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