MICROBIOLOGY & IMMUNOLOGY

MICRO: Mycology

Click on the -?- to reveal/hide the answer.

Most -?-asexual spores are asexual.

The endemic location of:

Coccidioidomycosis is -?-southwestern US, California
Histoplasmosis is -?-Mississippi & Ohio river valleys
Paracoccidioidomycosis is -?-rural Latin America
Blastomycosis is -?-states east of Mississippi River and Central America

All of the above are caused by -?-dimorphic fungi, which are mold in soil (at -?-lower temperature) year in tissue (at higher/body temperature except -?-coccidioidomycosis which is a spherule in tissue.

Match:
-?-(a) tinea versicolor Caused by Malassezia furfur; causes hypopigmented skin lesions; occurs in hot, humid weather; treat with topical miconazole, selenium sulfide (Selsun)
-?-(c) tinea pedis Pruritic lesions with central clearing resembling a ring, caused by dermatophytes
-?-(b) tinea nigra Caused by Cladosporium werneckii; infection of keratinized layer of skin; appears as brownish spot; treat with topical salicylic acid
(a) tinea versicolor (b) tinea nigra (c) tinea pedis
Match:
-?-(b) Asperigillus fumigatus Mold with septate hyphae that branch at a V-shaped (45°) angle; not dimorphic
-?-(d) Mucor & Rhizopus ssp. Mold with irregular nonseptate hyphae branching at wide angles (Z90°); disease mostly in ketoacidotic diabetic & leukemic patients; fungi also proliferate in the walls of blood vessels and cause infarction of distal tissue
-?-(c) Cryptococcus neoformans Heavily encrusted yeast; not dimorphic; found in soil, pigeon droppings
-?-(a) Candida albicans Thrush in immunocompromised (neonates, steroids, diabetes, AIDS), vulvovaginitis
(a) Candida albicans (b) Asperigillus fumigatus (c) Cryptococcus neoformans (d) Mucor & Rhizopus ssp.
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