scholarly journals Trailing end-point phenotype of Candida spp. in antifungal susceptibility testing to fluconazole is eliminated by altering incubation temperature

2007 ◽  
Vol 56 (7) ◽  
pp. 1003-1004 ◽  
Author(s):  
D. Agrawal ◽  
T. F. Patterson ◽  
M. G. Rinaldi ◽  
S. G. Revankar
Keyword(s):  
Susceptibility Testing ◽  
Incubation Temperature ◽  
Antifungal Susceptibility ◽  
Antifungal Susceptibility Testing ◽  
Candida Spp ◽  
End Point

scholarly journals Antifungal susceptibility testing.

1993 ◽  
Vol 6 (4) ◽  
pp. 367-381 ◽  
Author(s):  
J H Rex ◽  
M A Pfaller ◽  
M G Rinaldi ◽  
A Polak ◽  
J N Galgiani
Keyword(s):  
Susceptibility Testing ◽  
Incubation Temperature ◽  
Clinical Laboratory ◽  
Antifungal Susceptibility ◽  
Inoculum Size ◽  
Antifungal Susceptibility Testing ◽  
National Committee ◽  
Candida Spp ◽  
Interlaboratory Variability ◽  
Future Work

Unlike antibacterial susceptibility testing, reliable antifungal susceptibility testing is still largely in its infancy. Many methods have been described, but they produce widely discrepant results unless such factors as pH, inoculum size, medium formulation, incubation time, and incubation temperature are carefully controlled. Even when laboratories agree upon a common method, interlaboratory agreement may be poor. As a result of numerous collaborative projects carried out both independently and under the aegis of the Subcommittee on Antifungal Susceptibility Testing of the National Committee for Clinical Laboratory Standards, the effects of varying these factors have been extensively studied and a standard method which minimizes interlaboratory variability during the testing of Candida spp. and Cryptococcus neoformans has been proposed. This review summarizes this work, reviews the strengths and weaknesses of the proposed susceptibility testing standard, and identifies directions for future work.

scholarly journals Corrigendum: Growth kinetics in Candida spp.: Differences between species and potential impact on antifungal susceptibility testing as described by the EUCAST.

2019 ◽  
Vol 57 (5) ◽  
pp. e8-e10 ◽  
Author(s):  
María Ángeles Bordallo-Cardona ◽  
Carlos Sánchez-Carrillo ◽  
Patricia Muñoz ◽  
Emilio Bouza ◽  
Pilar Escribano ◽  
...  
Keyword(s):  
Growth Kinetics ◽  
Susceptibility Testing ◽  
Antifungal Susceptibility ◽  
Antifungal Susceptibility Testing ◽  
Candida Spp ◽  
Potential Impact

scholarly journals Evaluation of the “Dip Effect” Phenomenon in Antifungal Susceptibility Testing of Candida spp. against Echinocandins by Use of Gradient Concentration Strips

2015 ◽  
Vol 53 (11) ◽  
pp. 3654-3659 ◽  
Author(s):  
Maria Siopi ◽  
Marilena Tsala ◽  
Nikolaos Siafakas ◽  
Loukia Zerva ◽  
Joseph Meletiadis
Keyword(s):  
Candida Albicans ◽  
Candida Tropicalis ◽  
Candida Glabrata ◽  
Susceptibility Testing ◽  
Antifungal Susceptibility ◽  
Antifungal Susceptibility Testing ◽  
Practical Approach ◽  
Candida Spp ◽  
Content Type ◽  
Inhibition Zones

The “dip effect” phenomenon complicates antifungal susceptibility testing with gradient concentration strips. Of 60Candidaisolates tested with the three echinocandins, this phenomenon was observed only for caspofungin with most (>90%)Candida albicans,Candida glabrata, andCandida tropicalisisolates and for isolates with CLSI MICs of ≤0.25 mg/liter. In order to facilitate MIC determination, a practical approach was developed using the inhibition zones at 32, 8, 2, and 1 mg/liter, increasing the agreement with the CLSI method >86%.

scholarly journals Antifungal Susceptibility Testing: Practical Aspects and Current Challenges

2001 ◽  
Vol 14 (4) ◽  
pp. 643-658 ◽  
Author(s):  
John H. Rex ◽  
Michael A. Pfaller ◽  
Thomas J. Walsh ◽  
Vishnu Chaturvedi ◽  
Ana Espinel-Ingroff ◽  
...  
Keyword(s):  
Amphotericin B ◽  
Susceptibility Testing ◽  
Antifungal Susceptibility ◽  
Antifungal Susceptibility Testing ◽  
Testing Methods ◽  
Clinical Value ◽  
Candida Spp ◽  
Testing Procedures ◽  
Reference Methods ◽  
Interlaboratory Reproducibility

SUMMARY Development of standardized antifungal susceptibility testing methods has been the focus of intensive research for the last 15 years. Reference methods for yeasts (NCCLS M27-A) and molds (M38-P) are now available. The development of these methods provides researchers not only with standardized methods for testing but also with an understanding of the variables that affect interlaboratory reproducibility. With this knowledge, we have now moved into the phase of (i) demonstrating the clinical value (or lack thereof) of standardized methods, (ii) developing modifications to these reference methods that address specific problems, and (iii) developing reliable commercial test kits. Clinically relevant testing is now available for selected fungi and drugs: Candida spp. against fluconazole, itraconazole, flucytosine, and (perhaps) amphotericin B; Cryptococcus neoformans against (perhaps) fluconazole and amphotericin B; and Aspergillus spp. against (perhaps) itraconazole. Expanding the range of useful testing procedures is the current focus of research in this area.

scholarly journals Antifungal susceptibility of clinically significant candida species by disk diffusion method

2021 ◽  
Vol 7 (2) ◽  
pp. 77-80
Author(s):  
Ajitha Reddy Edula
Keyword(s):  
Antifungal Agents ◽  
Susceptibility Testing ◽  
Antifungal Susceptibility ◽  
Antifungal Susceptibility Testing ◽  
Susceptibility Test ◽  
Disk Diffusion ◽  
Diffusion Method ◽  
Candida Spp ◽  
Disk Diffusion Method ◽  
Antifungal Susceptibility Test

Antifungal susceptibility of candida. To perform antifungal susceptibility testing on candida isolates by disk diffusion method & study its susceptibility pattern. The present study was conducted in the department of Microbiology in a tertiary care hospital in Hyderabad from January 2013 to June 2014, with prior approval of the Institutional Ethics Committee. The present study was designed to perform antifungal susceptibility test on Candida isolates by Disk Diffusion Method and study its susceptibility pattern. 102 Candida isolates were subjected to Antifungal susceptibility testing by Disk diffusion method using Mueller-Hinton Agar + 2% Glucose and 0.5 μg/mL Methylene Blue Dye (GMB) Mediumas per CLSI guidelines. : Antifungal susceptibility test shows that C. albicans is more susceptible to all the antifungal agents tested. Resistance to azole group of drugs was more pronounced in non-albicans candida spp. Voriconazole seemed to be superior to Fluconazole with a better susceptibility in the Fluconazole resistant strains also.Findings of the antifungal susceptibility test suggest that Candida spp., differ in their susceptibility to antifungal agents. Antifungal susceptibility testing of Candida isolates will be helpful in guiding physicians to select the appropriate antifungal drug so that therapeutic failures can be avoided thus decreasing patient morbidity and mortality.

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