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Published on: October 23, 2011
Multiplex PCR designed to differentiate species within the Candida glabrata complex
Catiana Dudiuk1, Soraya E Morales-López2, Virginia Podesta3
1Laboratorio de Micología y Diagnóstico Molecular, Cátedra de Parasitología y Micología, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), CCT-Santa Fe, Santa Fe, Argentina.
A new multiplex PCR method accurately differentiates species within the Candida glabrata complex. This molecular tool aids in identifying rare species like Candida bracarensis and Candida nivariensis in clinical settings.
Area of Science:
- Medical Mycology
- Molecular Biology
- Clinical Diagnostics
Background:
- Phenotypic methods lack the specificity to differentiate species within the Candida glabrata complex.
- Accurate identification of Candida species is crucial for effective treatment and epidemiological surveillance.
Purpose of the Study:
- To develop a novel multiplex PCR assay for precise differentiation of the three species within the Candida glabrata species complex.
- To apply this method to a C. glabrata collection to identify strains of newly described species.
Main Methods:
- Development of a multiplex PCR assay based on Internal Transcribed Spacer (ITS) sequence variations.
- Validation using a blinded strain collection.
- Application to a panel of 192 C. glabrata species complex strains, with results compared to ITS sequencing.
Main Results:
- The multiplex PCR method demonstrated 100% concordance with ITS sequencing.
- The assay proved effective for both clinical and epidemiological applications.
- Prevalence of Candida bracarensis (0.93%) and Candida nivariensis (1.40%) was determined in the studied collection.
Conclusions:
- A rapid, cost-effective, robust, and highly reproducible multiplex PCR method for C. glabrata complex species identification is presented.
- The study highlights the method's utility in analyzing large collections of Candida glabrata sensu lato strains.
- This molecular tool enhances diagnostic capabilities for fungal infections.
