Advanced Molecular Fungal Diagnostics: Bridging the Gap in Clinical Mycology

Fungal infections represent a growing global health challenge, causing over 1.7 million deaths annually, with nearly 75% of cases remaining undiagnosed or diagnosed too late. The increasing burden of antifungal resistance (AMR) further complicates treatment outcomes, highlighting an urgent need for rapid, accurate, and comprehensive …

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HiCrome Candida Differential Agar: Introduction, Principle, Test Requirement, Procedure, Result-Interpretation, and Keynotes

Various Candida species growth on HiCrome Candida Differential Agar after 4 days of incubation

Introduction HiCrome™ Candida Differential Agar is a specialized chromogenic medium used in clinical microbiology for the rapid isolation and presumptive identification of Candida species. The medium is designed to differentiate between major Candida species—Candida albicans, Candida tropicalis, Candida krusei (Pichia kudriavzevii), and Candida glabrata—based on colony color and morphology within 48 hours. …

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Dalmau Plate Technique: Introduction, Principle, Test Requirements, Procedure, Application, and Keynotes

Dalmau Plate Microscopy at high power field (40X objective)

Introduction The Dalmau plate technique is a classic mycological method used to identify and differentiate yeast species, specifically Candida species, by observing their unique morphological features.  The technique is a specialized culture method that uses a “starvation medium” to induce the formation of characteristic structures like pseudohyphae, blastoconidia, and chlamydospores. It remains …

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Sanger Sequencers for Fungal Identification: Introduction, Application, and Keynotes

The box having the MinION sequencing device, Power adapter (FSP),Interchangeable international plugs- widely used in clinical mycology, genomics, and rapid pathogen surveillance

Introduction Sanger sequencing, developed by Frederick Sanger in 1977, is a chain-termination DNA sequencing method that remains the gold standard for molecular-level fungal identification.It is widely used to determine the exact nucleotide sequence of specific fungal genes (e.g., ITS, D1/D2, LSU, SSU, β-tubulin, calmodulin) to accurately identify fungal …

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Fungal Identification by PCR-Sequencing (Sanger): Introduction, Principle, Clinical Significance, and Keynotes

Pure culture of Candida

Introduction Accurate identification of fungi is critical for clinical, environmental, and epidemiological purposes. Traditional culture and morphology-based methods are time-consuming and may misidentify cryptic or closely related species. PCR amplification followed by Sanger sequencing of conserved genetic loci (e.g., ITS, 18S rRNA, 28S rRNA, β-tubulin, …

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Fungal Identification by Artificial Intelligence (AI): Introduction, Working Mechanisms, Clinical Significance, and Keynotes

Yeast and mold growth on SDA agar

Introduction Fungal infections represent a growing concern in both immunocompromised and immunocompetent individuals. Conventional identification methods, including culture, microscopy, and biochemical testing, often require several days and may lack sensitivity or specificity for certain opportunistic fungi. Molecular techniques such as PCR and sequencing have improved …

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Yeasts vs Molds: Detailed Comparison, Mixed Growth Isolation, Approach to Mixed Growth Handling, and Mixed Growth Interpretation

Yeast and mold mixed growth on SDA

Yeasts vs Molds: Detailed Comparison Feature Yeasts Molds Definition Unicellular fungi Multicellular filamentous fungi Structure Oval/round, single cells Hyphae form mycelium; septate or aseptate Reproduction Asexual (budding or fission); some sexual forms Asexual (spores like conidia/sporangia); sexual spores Hyphae Absent, but pseudohyphae may be present …

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Fungal Identification by NGS: Introduction, Principle, Test Methods, Test Procedure, Result-Interpretation, Clinical Significance, and Keynotes

PCR products of fungal DNA from pure culture after amplification with primers

Introduction Fungal identification by NGS (Next-Generation Sequencing) uses advanced DNA sequencing. Moreover, it rapidly detects diverse fungal species. It enhances diagnostic accuracy. Additionally, it supports personalized treatment decisions. Principle NGS sequences fungal DNA directly. Consequently, it generates millions of short DNA reads. Then, bioinformatics tools …

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