Molds Flashcards
What are superficial mycoses
Malasezzia
Trichosporon
What are cutaneous molds?
Microsporum
Trichophyton
Epidermophyton
What is common component of mold cell wall?
Ergosterol
How do you diagnose mold under microscope?
KOH prep, look for hyphae
Calcoflour white causes hyphae to flouresce
India ink
Methenamine silver
How do you culture molds?
Sabourauds Agar (inhibits bacterial growth)
What are important antifungal agents?
Azoles - inhibit ergosterol synthesis
Polyenes (amphoteracin) - Bind ergosterol and make pores
Echinocandins - inhibit synthesis of b- glucan and blocks cell wall
Why are polyenes bad to use?
Renal toxicity
What are important subcutaneous mycoses?
Sporotrichosis
Chromoblastomycosis
Eumycotic Mycetoma
(All rare, Introduced traumatically, typically dont spread to far organs)
Sporotrichosis
think rosebushes
common in gardeners
Chromomycosis
Causes colored warty growths
Look for medlar bodies
Treat orally, surgical romoval can lead to recurrence
Eumycotic mycetoma
Really bad and hard to treat
Looks like sandy granules
frequently cured by amputation