4.7 Article

Comparison of Dimethyl Sulfoxide and Water as Solvents for Echinocandin Susceptibility Testing by the EUCAST Methodology

Journal

JOURNAL OF CLINICAL MICROBIOLOGY
Volume 50, Issue 7, Pages 2509-2512

Publisher

AMER SOC MICROBIOLOGY
DOI: 10.1128/JCM.00791-12

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Funding

  1. REIPI (Red Espanola de Investigacion en Patologia Infecciosa) [MPY 1022/07_1]
  2. Instituto de Salud Carlos III
  3. European Development Regional Fund A Way to Achieve Europe
  4. Spanish Network for Research in Infectious Diseases [REIPI RD06/0008]
  5. National Institute of Health Research clinician scientist award
  6. Astellas
  7. Gilead
  8. Merck Sharp and Dohme (MSD)
  9. Pfizer
  10. Merck
  11. Vectura
  12. F2G
  13. Astellas Pharma
  14. Gilead Sciences
  15. MSD
  16. Schering-Plough
  17. Soria Melguizo S.A.
  18. European Union
  19. Spanish Agency for International Cooperation
  20. Spanish Ministry of Culture and Education
  21. Spanish Health Research Fund
  22. Ramon Areces Foundation
  23. Mutua Madrilena Foundation
  24. bioMerieux
  25. Ferrer International
  26. ALBAN program

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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 EDef7.1 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.

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