Comparison of PCR protocols for detecting Histoplasma capsulatum DNA through a multicenter study
| Autor: | Rosely Maria Zancopé-Oliveira, Angel Gonzalez, Cristina Elena Canteros, Guadalupe Frías De León, Cesar Muñoz, Manuel Cuenca-Estrella, Manoel Marques-Evangelista De Oliveira, María José Buitrago, José Antonio Ramírez, Adriana Toranzo |
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| Rok vydání: | 2012 |
| Předmět: |
Genetic Markers
Laboratory Proficiency Testing Histoplasma Mycology Real-Time Polymerase Chain Reaction Microbiology Histoplasma capsulatum Polymerase Chain Reaction Sensitivity and Specificity Fungal Proteins chemistry.chemical_compound False positive paradox Single-Blind Method DNA Fungal Pathogen Protocol (science) biology Reproducibility of Results Fungal DNA biology.organism_classification Virology Infectious Diseases Latin America chemistry Multicenter study Spain Immunology Histoplasma capsulatum DNA Laboratories DNA |
| Zdroj: | Revista iberoamericana de micologia. 30(4) |
| ISSN: | 2173-9188 |
| Popis: | Background A multicenter study was conducted. A panel containing DNA from Histoplasma capsulatum, as well as negative and cross-reaction controls, was sent to five different laboratories, members of the MICOMOL network from CYTED Program. Aims The objective was to assess the accuracy of different PCR protocols to detect H. capsulatum DNA. Methods Seven different PCR protocols were tested. They were based on PCR techniques and used unicopy and multicopy targets. Results Most of these protocols (4/7) were able to detect the smallest amounts of fungal DNA (102 fg/μl). Overall sensitivity was 86% and specificity was 100%. The protocol based on a unicopy target (SCAR220) presented lower sensitivity (43%) but 100% specificity. The real-time protocols tested were highly reproducible, sensitive, and specific. Neither false positives nor cross-reactions were detected in any protocol. Conclusions All laboratories were able to amplify H. capsulatum DNA, and real-time PCR seems to be a promising tool to efficiently detect this pathogen in clinical samples. |
| Databáze: | OpenAIRE |
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