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Broth Microdilution In Vitro Screening: An Easy and Fast Method to Detect New Antifungal Compounds
Published on: February 14, 2018
Pharmacotherapy of yeast infections
Alicia Gómez-López1, Oscar Zaragoza, Juan Luis Rodríguez-Tudela
1Instituto de Salud Carlos III, Servicio de Micología, Centro Nacional de Microbiología, Carretera Majadahonda-Pozuelo, Km2, Majadahonda 28220, Madrid, Spain.
Abstract:
The rise of immunocompromised individuals in our society has provoked a significant emergence in the number of patients affected by opportunistic pathogenic yeast. The microorganisms with a major clinical incidence are species from the genera Candida (especially Candida albicans) and Cryptococcus (particularly Cryptococcus neoformans), although there has been a significant increase in other pathogenic yeasts, such as Trichosporon spp. and Rhodotorula spp. In addition, there are an increasing number of patients infected by yeasts that were not previously considered as pathogenic, such as Saccharomyces cerevisiae. The management of these infections is complicated and is highly dependent on the susceptibility profile not only of the species but also of the strain. The available antifungal compounds belong mainly to the polyene, azole and candin families, which show a distinct spectrum of activity. This review summarizes the current knowledge about the use of the main antifungals for treating infections caused by the yeast species with the most significant clinical relevance, including the susceptibility profiles exhibited by these species in vitro.
Insights
Opportunistic yeast infections are increasing in immunocompromised patients. This review covers key yeast pathogens, their antifungal susceptibility, and treatment strategies using polyenes, azoles, and candins.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Pharmacology
Background:
- Rising incidence of immunocompromised individuals leads to increased opportunistic yeast infections.
- Key clinical pathogens include Candida spp., Cryptococcus neoformans, Trichosporon spp., Rhodotorula spp., and Saccharomyces cerevisiae.
- Management is complex, influenced by species and strain-specific antifungal susceptibility.
Purpose of the Study:
- To review current knowledge on antifungal treatments for clinically relevant yeast infections.
- To summarize in vitro antifungal susceptibility profiles of major yeast pathogens.
- To provide insights into managing emerging yeast infections.
Main Methods:
- Literature review of current scientific knowledge.
- Analysis of antifungal susceptibility data for key yeast species.
- Synthesis of information on treatment strategies and drug classes (polyenes, azoles, candins).
Main Results:
- Candida and Cryptococcus remain primary concerns, with increasing infections from other yeasts.
- Antifungal drug classes exhibit distinct activity spectra.
- In vitro susceptibility data is crucial for guiding effective treatment decisions.
Conclusions:
- Effective management of yeast infections requires understanding pathogen-specific susceptibility profiles.
- The review highlights the importance of appropriate antifungal selection based on in vitro data.
- Further research is needed to address evolving resistance patterns and novel therapeutic approaches.
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