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Mutant Prevention Concentration and Mutant Selection Window of Micafungin and Anidulafungin in Clinical Candida glabrata Isolates
dc.contributor.author | Bordallo-Cardona, María Ángeles | |
dc.contributor.author | Marcos-Zambrano, Laura Judith | |
dc.contributor.author | Sánchez-Carrillo, Carlos | |
dc.contributor.author | Gómez G. de la Pedrosa, Elia | |
dc.contributor.author | Cantón, Rafael | |
dc.contributor.author | Bouza, Emilio | |
dc.contributor.author | Escribano, Pilar | |
dc.contributor.author | Guinea, Jesús | |
dc.date.accessioned | 2024-02-05T13:53:12Z | |
dc.date.available | 2024-02-05T13:53:12Z | |
dc.date.issued | 2018-01-08 | |
dc.identifier.citation | Bordallo-Cardona, M. Á., Marcos-Zambrano, L. J., Sánchez-Carrillo, C., de la Pedrosa, E. G. G., Cantón, R., Bouza, E., Escribano, P., & Guinea, J. (2018). Mutant Prevention Concentration and Mutant Selection Window of Micafungin and Anidulafungin in Clinical Candida glabrata Isolates. Antimicrobial agents and chemotherapy, 62(3), e01982-17. https://doi.org/10.1128/AAC.01982-17 | es |
dc.identifier.other | https://pubmed.ncbi.nlm.nih.gov/29311063/ | es |
dc.identifier.other | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5826129/ | es |
dc.identifier.uri | http://hdl.handle.net/20.500.12020/1187 | |
dc.description.abstract | We report the mutant prevention concentration (MPC) and mutant selection window (MSW) for micafungin and anidulafungin administered to treat Candida glabrata We also determine the mutation frequency. We studied 20 echinocandin-susceptible, fluconazole-intermediate, and FKS wild-type C. glabrata isolates. Adjusted inocula were stroked directly onto Sabouraud agar plates containing different concentrations of micafungin or anidulafungin and visually inspected daily for up to 5 days of incubation. Individual colonies growing on the plates containing echinocandins at 1 mg/liter were selected for antifungal susceptibility testing. The FKS genes of the resulting individual phenotypically resistant colonies were sequenced, and the MPC, MSW, and mutation frequency were determined. Biofilm was quantified, and the growth kinetics and virulence (Galleria mellonella model) of the resulting individual FKS mutant colonies were studied. For micafungin and anidulafungin, we found similar results for the MPC (0.06 to 2 mg/liter and 0.25 to 2 mg/liter, respectively), MSW (0.015 to 2 mg/liter for both echinocandins), and mutation frequency (3.7 × 10-8 and 2.8 × 10-8, respectively). A total of 12 isolates were able to grow at 1 mg/liter on echinocandin-containing plates, yielding a total of 32 phenotypically resistant colonies; however, FKS2 mutations (ΔF658, S663P, W715L, and E655A) were observed only in 21 colonies. We did not find differences in biofilm formation, the kinetic parameters studied, or the median survival of larvae infected by wild-type isolates and the resulting individual FKS2 mutant colonies. Echinocandin concentrations lower than 2 mg/liter can lead to selection of resistance mutations in C. glabrata isolates in vitro. | es |
dc.language.iso | en | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Mutant Prevention Concentration and Mutant Selection Window of Micafungin and Anidulafungin in Clinical Candida glabrata Isolates | es |
dc.type | article | es |
dc.identifier.doi | 10.1128/AAC.01982-17 | |
dc.issue.number | 3 | es |
dc.journal.title | Antimicrob Agents Chemother | es |
dc.page.initial | e01982-17 | es |
dc.page.final | e01982-17 | es |
dc.relation.projectID | The study was supported by grants PI14/00740 and MSI15/00115 from the Fondo de Investigación Sanitaria (FIS; Instituto de Salud Carlos III; Plan Nacional de I D I 2013-2016). It was also supported by grant CM-SANTANDER (GR3/2014; group 920200) and a grant from the Spanish Network for Research in Infectious Diseases (REIPI RD12/0015). The study was cofunded by the European Regional Development Fund (FEDER), “A way of making Europe.” | es |
dc.rights.accessRights | embargoedAccess | es |
dc.subject.area | Ciencias Biomédicas | es |
dc.subject.keyword | Candida glabrata | es |
dc.subject.keyword | FKS mutation | es |
dc.subject.keyword | Galleria mellonella | es |
dc.subject.keyword | MPC | es |
dc.subject.keyword | MSW | es |
dc.subject.keyword | echinocandins | es |
dc.subject.unesco | 2414 Microbiología | es |
dc.volume.number | 62 | es |
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