Related Experiment Video
Updated: Jul 22, 2026
Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance
Published on: December 28, 2017
Caspofungin susceptibility testing of Candida inconspicua: correlation of different methods with the minimal
1Department of Medical Microbiology, University of Debrecen, 4032 Debrecen, Nagyerdei krt. 98, Hungary. major@jaguar.dote.hu
Abstract:
Minimal inhibitory and minimal fungicidal concentrations of caspofungin were determined for 48 Candida inconspicua isolates. By using CLSI (formerly NCCLS) methodology with the partial inhibition endpoint criterion, caspofungin exhibited a good fungicidal effect against C. inconspicua (the MIC(90) was 0.25 microg/ml and the minimum fungicidal concentration [MFC] was 0.5 microg/ml after 24 h). Total inhibition yielded falsely elevated MICs, exceeding even the respective MFCs.
Insights
Caspofungin effectively kills Candida inconspicua, showing a good fungicidal effect. Researchers recommend using the partial inhibition endpoint for accurate minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) testing.
Area of Science:
- Medical Mycology
- Antifungal Drug Susceptibility Testing
Background:
- Candida inconspicua is an emerging fungal pathogen.
- Echinocandin antifungals like caspofungin are crucial for treating invasive candidiasis.
- Accurate susceptibility testing is vital for guiding therapy.
Purpose of the Study:
- To determine the minimal inhibitory concentrations (MICs) and minimal fungicidal concentrations (MFCs) of caspofungin against Candida inconspicua.
- To evaluate the impact of different endpoint criteria on caspofungin MIC and MFC determination.
Main Methods:
- Minimal inhibitory and fungicidal concentrations were determined for 48 Candida inconspicua isolates.
- CLSI (Clinical and Laboratory Standards Institute) methodology was employed.
- Both partial inhibition and total inhibition endpoint criteria were assessed.
Main Results:
- Caspofungin demonstrated a potent fungicidal effect against C. inconspicua.
- The MIC(90) was 0.25 microg/ml and the MFC was 0.5 microg/ml at 24 hours using the partial inhibition endpoint.
- Total inhibition criteria resulted in falsely elevated MICs, which exceeded the MFCs.
Conclusions:
- Caspofungin exhibits significant fungicidal activity against Candida inconspicua.
- The partial inhibition endpoint is recommended for accurate caspofungin susceptibility testing of C. inconspicua.
- Using total inhibition endpoints can lead to inaccurate and misleading susceptibility results.
