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Introduction Pichia kudriavzevii, formerly known as Candida krusei, is a unique budding yeast that holds a dual status as both a critical industrial organism and an emerging opportunistic pathogen. Taxonomy: It is the teleomorph (sexual state) of Candida krusei. It has also been historically known as Issatchenkia orientalis. …
Introduction KOH mount of sputum is a rapid, direct microscopic technique used to detect fungal elements in the respiratory tract. A 10–20% Potassium Hydroxide (KOH) solution digests mucus, epithelial cells, and debris in sputum, while preserving the chitin-rich fungal cell walls, making them appear clear, …
Introduction Histoplasma capsulatum is a dimorphic fungus responsible for histoplasmosis, an endemic mycosis prevalent in parts of North and Central America, Africa, and Asia. In immunocompromised patients, especially those with HIV/AIDS, cancer, or organ transplants, histoplasmosis can be severe and disseminated. Histoplasma antigen testing provides …
Introduction Unlike molds, yeasts are the most commonly recovered fungi in blood cultures. Candidemia is among the leading causes of bloodstream infections in immunocompromised and critically ill patients. Yeasts such as Candida, Cryptococcus, and Trichosporon are responsible for significant morbidity and mortality. Blood culture positivity …
Introduction Yeasts, especially Candida and Cryptococcus species, are frequent causes of opportunistic infections in immunocompromised patients. Determining their antifungal susceptibility is crucial for guiding effective therapy. While broth microdilution methods (CLSI/EUCAST) serve as reference standards, they are labor-intensive and time-consuming. Colorimetric antifungal susceptibility testing systems …
Introduction Yeasts, especially Candida species, are among the most important causes of opportunistic fungal infections in humans. Accurate and rapid identification is crucial for guiding antifungal therapy and improving patient outcomes. Traditional phenotypic methods are time-consuming and often misidentify cryptic species. Matrix-Assisted Laser Desorption/Ionization Time-of-Flight …
Introduction Candida auris is an emerging multidrug-resistant yeast responsible for outbreaks of healthcare-associated infections worldwide. It is difficult to identify by conventional culture and biochemical methods, often misidentified as other Candida species (C. haemulonii, C. famata). Rapid and accurate detection is essential to initiate infection …
Introduction Fungal culture is the gold standard method for the detection and identification of pathogenic fungi in clinical microbiology. It is essential for diagnosing superficial, subcutaneous, and systemic mycoses. Clinical specimens such as blood, sputum, bronchoalveolar lavage (BAL), urine, cerebrospinal fluid (CSF), skin scrapings, nail …