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Fungi cards
Basic fungi biology and pathology
6
Medical
Graduate
10/26/2009

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Cards

Term
Which fast-growing, acute fungal infection has broad, aseptate branching at right angles?
Definition
Zygomycetes (rhinocerebral zygomycosis)
Term
Which fungi have septate branching at acute angles?
Definition
Ascomyrcetes ("sac fungi")
Term
What are some of the techniques used for visualizing fungi?
Definition
  1. Staining (silver-staining) to ascertain hyphae and specific structures (e.g. spherules of Coccidioides immitis)
  2. Digestion of debris by KOH prep
  3. Fungal cell wall stain (calcofluor)
  4. Autofluorescence (Wood's lamp)
  5. Negative stain (India Ink prep)
  6. Rapid antigen tests
  7. Skin tests
Term
Which species of fungi can colonize the respiratory tract, leading to long-term hypersensitivity I reactions?
Definition
Aspergillus
Term
What is the "one of the most serious" fungal toxins and its associated fungus?
Definition
Amanitin, from Aminita phalloides (death angel mushroom). Another example is ergotism from Claviceps purpurea, found on rye.
Term
The hallmark of this disease is "spongiosis" or intercellular edema. At the clinical level, it presents with poly-morphous, ill-defined pruritic lesions.
Definition

Eczematous dermatitis.

 

The lesions will be characterized by thickening and gray scales. Spongiosis leads to keratinization.

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