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Updated: Jul 5, 2026

Multiplex PCR Assay for Typing of Staphylococcal Cassette Chromosome Mec Types I to V in Methicillin-resistant Staphylococcus aureus

Multiplex PCR Assay for Typing of Staphylococcal Cassette Chromosome Mec Types I to V in Methicillin-resistant Staphylococcus aureus

Published on: September 5, 2013

Cryptococcus species identification by multiplex PCR.

Ana Lusia Leal¹, Josiane Faganello, Maria Cristina Bassanesi

¹Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.

Medical Mycology

|April 17, 2008

Summary

Differentiating Cryptococcus neoformans and Cryptococcus gattii is crucial for patient care. Multiplex PCR offers a more accurate method than the traditional CGB test for identifying these fungal pathogens.

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Area of Science:

Medical Mycology
Molecular Diagnostics
Infectious Diseases

Background:

The Cryptococcus species complex comprises encapsulated yeasts that can cause severe central nervous system infections, including meningitis.
Cryptococcus neoformans is an opportunistic pathogen, primarily affecting immunocompromised individuals.
Cryptococcus gattii is a primary pathogen causing lung and brain cryptococcomas, often with delayed antifungal treatment response.

Purpose of the Study:

To develop and validate a multiplex PCR assay for accurate differentiation of Cryptococcus neoformans and Cryptococcus gattii.
To compare the diagnostic performance of the multiplex PCR assay against the conventional Canavanine-Glycine-Bromothymol blue (CGB) agar test.

Main Methods:

Standardization of a multiplex PCR assay using over 130 clinical samples.

Related Experiment Videos

Last Updated: Jul 5, 2026

Multiplex PCR Assay for Typing of Staphylococcal Cassette Chromosome Mec Types I to V in Methicillin-resistant Staphylococcus aureus

Multiplex PCR Assay for Typing of Staphylococcal Cassette Chromosome Mec Types I to V in Methicillin-resistant Staphylococcus aureus

Published on: September 5, 2013

Comparative analysis of multiplex PCR results against the CGB agar test and a Crypto Check serotyping kit as the gold standard.

Main Results:

The multiplex PCR assay demonstrated higher specificity compared to the CGB agar test.
Multiplex PCR results showed complete agreement with the serotyping standard for all samples.
The CGB agar test yielded discrepant results for 6 out of 131 samples when compared to serotyping.

Conclusions:

Multiplex PCR is a more reliable and specific method for differentiating Cryptococcus neoformans and Cryptococcus gattii than the CGB agar test.
Accurate species identification is essential for appropriate clinical management of cryptococcosis.