Characterization of Candida albicans and Staphylococcus aureus polymicrobial biofilm on different surfaces.

Autor: Hernandez-Cuellar E; Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico. Electronic address: ecuellar@correo.uaa.mx., Guerrero-Barrera AL; Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico., Avelar-Gonzalez FJ; Laboratorio de Ciencias Ambientales, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico., Díaz JM; Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico., Santiago AS; Unidad Académica de Odontología, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, Mexico., Chávez-Reyes J; Laboratorio de Farmacología y Terapéutica Experimental, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico., Poblano-Sánchez E; Institute for Social Security and Services for State Workers (ISSSTE), Aguascalientes, Mexico.
Jazyk: angličtina
Zdroj: Revista iberoamericana de micologia [Rev Iberoam Micol] 2022 Apr-Jun; Vol. 39 (2), pp. 36-43. Date of Electronic Publication: 2022 Jun 21.
DOI: 10.1016/j.riam.2022.04.001
Abstrakt: Background: Staphylococcus aureus and Candida albicans have been co-isolated from biofilm-associated diseases such as denture stomatitis, periodontitis, and burn wound infections, as well as from medical devices. However, the polymicrobial biofilm of both microorganisms has not been fully characterized.
Aims: To characterize the polymicrobial biofilm of C. albicans and S. aureus in terms of microbial density, synergy, composition, structure, and stability against antimicrobials and chemical agents.
Methods: Crystal violet assay was used to measure the biofilm formation. Scanning electron microscopy and confocal microscopy were used to analyze the structure and chemical composition of the biofilms, respectively.
Results: Supplemented media with fetal bovine serum (FBS) decreased the biofilm formation of S. aureus and the polymicrobial biofilm. For C. albicans, depending on the culture media, the addition of glucose or FBS had a positive effect in biofilm formation. FBS decreased the adhesion to polystyrene wells for both microorganisms. Supplementing the media with glucose and FBS enhanced the growth of C. albicans and S. aureus, respectively. It seems that C. albicans contributes the most to the adhesion process and to the general structure of the biofilms on all the surfaces tested, including a catheter model. Interestingly, S. aureus showed a great adhesion capacity to the surface of C. albicans in the biofilms. Proteins and β-1,6-linked polysaccharides seem to be the most important molecules in the polymicrobial biofilm.
Conclusions: The polymicrobial biofilm had a complex structure, with C. albicans serving as a scaffold where S. aureus adheres, preferentially to the hyphal form of the fungus. Detection of polymicrobial infections and characterization of biofilms will be necessary in the future to provide a better treatment.
(Copyright © 2022 The Author(s). Publicado por Elsevier España, S.L.U. All rights reserved.)
Databáze: MEDLINE
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