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Mycology: morphology
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General fungal forms
filamentous
branching
Agar used
Sabouraud agar
Fungal cultures are left for _____ @ ____C
1-4 wks
25C
Mycelium-
Mass of hyphae
Dimorphic-
having yeast form and mycelial form
Conidia-
spores
Arthroconidia/arthrospores-
Spores from hyphal fragmentation
Geophilic-
soil is natural habitat
Zoophilic-
Animals are the source
Yeast form @ ___C and Mycelial form @ ___C
Ringworm fungi-
Dermatomycoses
Yeast and yeat like fungi (2)
Candida
Malassezia
SQ Mycoses-
sporotrichosis
Systemic Mycoses (5):
Aspergillosis
Blastomycosis
Histoplasmosis
Coccidoidomycosis
zygomycosis
Antifungal that is rarely used d/t renal damage
Amphotericin B
Nystatin is a _______, used for _____
Narrow spectrum drug
candida
PO Ringworm drug:
Griseofulvin
Ketoconazole is used....
systemically a variety of fungal infections
Used to disinfect ares contaminated w/ dermatophytes (3):
Sodium hypochlorite
Formalin
Enilconazole
Topical Tx for dermatophytes (2):
Lime Sulfur
Imidazole/ketoconazole
Natamycin (horses)
Systemis Tc for dermatophytes (3):
Griseofulvin
itraconazole
ketoconazole
Clinical Signs of ringworm:
alopecia
erythema
crusts
Ringworm immunity is associated w/
DTH
Pathogenesis of dermatomycosis
Hyphae in stratum corneum, hair roots
Keratinases, elastases and proteases -> hair break
Inflammation -> erythema
fungus moves to next follicle
circular lesion
M. canis infects:
Dogs
Cats
T Verrucosum infects:
cattle
T. Equinum infects:
horses
T Mentagrophytes infects:
Dogs
Horses
Cats
Appearance of M. canis
spindle shapes macroconidia
Appearance of M. gypseum
Boat shaped macroconidia
Appearance of T. mentagrophytes:
Cigar shaped macroconidium + numerous Microconidia
Look for ____ to Dx w/ a SS
Arthrospores
Look for ___ to Dx w/ a culture
Macrocinidia
"package of spores"=
Macroconidia
Trichophyton verrucosum-
ringworn Vx for cattle
Author
HLW
ID
65145
Card Set
Mycology: morphology
Description
Mycology: morphology
Updated
2011-02-09T03:19:21Z
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