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Título
Exploring the Biofilm Formation Capacity in S. pseudintermedius and Coagulase-Negative Staphylococci Species
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Pathogens
Número de la revista
6
Datos de la obra
Silva, V., Correia, E., Pereira, J. E., González Machado, C., Capita, R., Alonso Calleja, C., Igrejas, G., & Poeta, P. (2022). Exploring the Biofilm Formation Capacity in S. pseudintermedius and Coagulase-Negative Staphylococci Species. Pathogens, 11(6), Article e689. https://doi.org/10.3390/PATHOGENS11060689
Editor
MDPI
Fecha
2022
Résumé
[EN] The ability of biofilm formation seems to play an important role in the virulence of staphylococci. However, studies reporting biofilm formation of coagulase-negative staphylococci isolated from animals are still very scarce. Thus, we aimed to evaluate the biofilm-forming capacity of CoNS and S. pseudintermedius isolated from several animal species and to investigate the effect of conventional antimicrobials on biofilm reduction. A total of 35 S. pseudintermedius and 192 CoNS were included. Biofilm formation was accessed by the microtiter plate assay and the biofilms were stained by crystal violet. Association between biofilm formation and staphylococci species and antimicrobial resistance was also performed. Biofilm susceptibility testing was performed with tetracycline and amikacin at the minimum inhibitory concentration (MIC) and 10 × MIC. The metabolic activity of the biofilm cells after antimicrobial treatment was accessed by the XTT assay. All isolates formed biofilm, with S. urealyticus producing the most biofilm biomass and S. pseudintermedius producing the least biomass. There was a positive association between biofilm formation and multidrug resistance as well as resistance to individual antimicrobials. Neither tetracycline nor amikacin were able to eradicate the biofilm, not even at the highest concentration used. This study provides new insights into biofilm formation and the effects of antimicrobials on CoNS species.
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/AEI/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/RTI2018-098267-R-C33/ES/ALTERNATIVAS AL USO DE DESINFECTANTES EN LA INDUSTRIA ALIMENTARIA DIRIGIDAS A REDUCIR LA SUPERVIVENCIA DE LISTERIA MONOCYTOGENES Y SALMONELLA ENTERICA SOBRE LAS SUPERFICIES//
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DOI
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