Comparison of dimethyl sulfoxide and water as solvents for echinocandin susceptibility testing by the EUCAST methodology

Ana Alastruey-Izquierdo, Alicia Gómez-López, Maiken C. Arendrup, Cornelia Lass-Florl, William W. Hope, David S. Perlin, Juan L. Rodriguez-Tudela, Manuel Cuenca-Estrella

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Ninety-six strains of Candida, including 29 resistant and 67 susceptible isolates with mutations in the FKS1 and FKS2 genes were tested by the European Committee on Antibiotic Susceptibility Testing EDef 7.1 and 7.2 methodologies to determine the impact on the MIC when water was replaced with dimethyl sulfoxide (DMSO) as the solvent for caspofungin and micafungin. The MICs were significantly lower and the MIC ranges were narrower when DMSO was used as the solvent. The use of DMSO may help to better discriminate between susceptible and resistant populations.

Original languageEnglish (US)
Pages (from-to)2509-2512
Number of pages4
JournalJournal of clinical microbiology
Volume50
Issue number7
DOIs
StatePublished - Jul 2012

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)

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