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Artículo

Antifungal susceptibility testing of Malassezia yeast: comparison of two different methodologies

Rojas, Florencia DinorahIcon ; Córdoba, Susana Beatríz; Sosa, Maria de Los Angeles; Zalazar, Laura C.; Fernández, Mariana SoledadIcon ; Cattana, Maria EmiliaIcon ; Alegre, Lilian R.; Carrillo Muñoz, Alfonso J.; Giusiano, Gustavo EmilioIcon
Fecha de publicación: 02/2017
Editorial: Wiley Blackwell Publishing, Inc
Revista: Mycoses
ISSN: 0933-7407
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

All Malassezia species are lipophilic; thus, modifications are required in susceptibility testing methods to ensure their growth. Antifungal susceptibility of Malassezia species using agar and broth dilution methods has been studied. Currently, few tests using disc diffusion methods are being performed. The aim was to evaluate the in vitro susceptibility of Malassezia yeast against antifungal agents using broth microdilution and disc diffusion methods, then to compare both methodologies. Fifty Malassezia isolates were studied. Microdilution method was performed as described in reference document and agar diffusion test was performed using antifungal tablets and discs. To support growth, culture media were supplemented. To correlate methods, linear regression analysis and categorical agreement was determined. The strongest linear association was observed for fluconazole and miconazole. The highest agreement between both methods was observed for itraconazole and voriconazole and the lowest for amphotericin B and fluconazole. Although modifications made to disc diffusion method allowed to obtain susceptibility data for Malassezia yeast,variables cannot be associated through a linear correlation model, indicating that inhibition zone values cannot predict MIC value. According to the results, disc diffusion assay may not represent an alternative to determine antifungal susceptibility of Malassezia yeast.
Palabras clave: Disc Diffusion , Lipid-Dependent Yeast , Minimal Inhibitory Concentration , Disc Diffusion
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/47325
URL: https://onlinelibrary.wiley.com/doi/full/10.1111/myc.12556
DOI: https://doi.org/10.1111/myc.12556
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Articulos(CCT - NORDESTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Citación
Rojas, Florencia Dinorah; Córdoba, Susana Beatríz; Sosa, Maria de Los Angeles; Zalazar, Laura C.; Fernández, Mariana Soledad; et al.; Antifungal susceptibility testing of Malassezia yeast: comparison of two different methodologies; Wiley Blackwell Publishing, Inc; Mycoses; 60; 2; 2-2017; 104-111
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