Research Topic: PCR

An Optimized In-House Protocol for Cryptococcus neoformans DNA Extraction from Whole Blood: Comparison of Lysis Buffer and Ox-Bile Methods

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Researchers developed a simple, low-cost method to extract DNA from Cryptococcus neoformans fungal cells found in blood samples. The new method uses a homemade salt buffer solution instead of expensive commercial kits, making it accessible to laboratories in developing countries. Testing showed this method works better than an alternative ox-bile method, detecting very small numbers of fungal cells. This breakthrough could help doctors more quickly diagnose a serious fungal infection called cryptococcal meningitis in resource-limited settings.

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Cryptococcus neoformans/gattii and Histoplasma capsulatum var. capsulatum infections on tissue sections: Diagnostic pitfalls and relevance of an integrated histomolecular diagnosis

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This research addresses the challenge of identifying two common fungal infections (cryptococcosis and histoplasmosis) when examining tissue samples under a microscope. The study found that these infections often look similar and can be confusing for pathologists. The researchers discovered that looking for specific fungal features, particularly ‘dented-looking’ yeasts, can help differentiate cryptococcosis from histoplasmosis. When standard laboratory tests on fresh tissue aren’t available, using molecular testing (genetic analysis) on preserved tissue samples can successfully identify the fungus in about 75% of cases.

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