Set of classical PCRs for detection of mutations in Candida glabrata FKS genes linked with echinocandin resistance

Catiana Dudiuk, Soledad Gamarra, Florencia Leonardeli, Cristina Jimenez-Ortigosa, Roxana G. Vitale, Javier Afeltra, David S. Perlin, Guillermo Garcia-Effron

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Clinical echinocandin resistance among Candida glabrata strains is increasing, especially in the United States. Antifungal susceptibility testing is considered mandatory to guide therapeutic decisions. However, these methodologies are not routinely performed in the hospital setting due to their complexity and the time needed to obtain reliable results. Echinocandin failure in C. glabrata is linked exclusively to Fks1p and Fks2p amino acid substitutions, and detection of such substitutions would serve as a surrogate marker to identify resistant isolates. In this work, we report an inexpensive, simple, and quick classical PCR set able to objectively detect the most common mechanisms of echinocandin resistance in C. glabrata within 4 h. The usefulness of this assay was assessed using a blind collection of 50 C. glabrata strains, including 16 FKS1 and/or FKS2 mutants.

Original languageEnglish (US)
Pages (from-to)2609-2614
Number of pages6
JournalJournal of clinical microbiology
Volume52
Issue number7
DOIs
StatePublished - Jul 2014

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)

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