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fungi 3
fungi 3
24
Anatomy
3rd Grade
04/27/2011

Additional Anatomy Flashcards

 


 

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Term
dermatophytes + candida (type of fungi)
Definition
Filamentous fungi (moulds) that possess keratinolytic enzymes that allow parasitization of all fully keratinized tissues of the body (hair, skin, and nails).
Term
dermatophytes + candida (type of fungi)
Definition
Organisms do not usually penetrate beneath epidermal layer of skin.
Term
T. schoenleinii - endothrix
Definition
cause of favus, see scutula (crusting) with permanent loss of hair, scarring.
Term
Microsporum audouinii , T also
Definition
ectothrix infection (growth and sporulation around hair shaft)
Term
Tinea cruris
Definition
Epidermophyton floccosum, T. rubrum -
Term
tinea unguium)
Definition
itraconazole (dermatophyte)
Term
direct exam for dermatophytes
Definition
KOH prep, lactophenol cotton blue
Term
agar identification of dermatophytes
Definition
Sabouraud dextrose agar incubate 25-30oC for up to 4 weeks
Term
Epidermophyton
Definition
club-shaped, thick-walled, macroconidia
Term
Microsporum
Definition
abundant, spindle-shaped, thick-walled, macrocondiia
Term
Trichophyton
Definition
abundant, spherical, elongate, or pear-shaped microconida
Term
Lymphocutaneous disease (most common form): - Sporotrichosis
Definition
acquisition of infection through traumatic implantation of soil fungus, often due to rose thorn, splinter, or similar types of puncture wounds.

lesions begin as painless papules, usually 1-3 weeks after inoculation, and spread distally along lymphatic channels.
Term
sporotrichosis
Definition
Pulmonary or disseminated disease: - acquired via inhalation
Term
sporothrix, tissue phase
Definition
elongated, cigar-shaped yeasts; these forms are rarely seen in histological sections of tissue.
Term
mold phase, sporothrix
Definition
septate hyphae, turning white to black with age, with delicate conidiophores bearing pyriform
(pear-shaped) conidia in rosette clusters.
Term
Asteroid bodies
Definition
yeast forms surrounded by eosinophilic halo that are occasionally seen during histological examination of tissue; represent deposition of antigen/antibody complexes.
Term
Subcutaneous
Definition
only itraconazole for treatment (possibly surgery), ampB for disseminated
Term
Chromomycosis
Definition
a localized, chronic infection of the skin and subcutaneous tissues acquired by implantation of soil organisms; lesions are usually painless and "cauliflower-like".
Term
chromomycosis, phaehypomycosis
Definition
dematiaceous (black) fungi
Term
chromomycosis sporulation
Definition

cladosporium-type: branching conidiophores with chains of conidia b) acrotheca or rhinocladiella -type: club-shaped conidiophores with elongate conidia at the upper part c) phialophora - type: vase or urn-shaped conidiophore, flared at top bearing small elliptical conidia

 

"essential MULTIPLE SPORULATION TYPES"

Term
Sclerotic bodies
Definition
brown segmented hyphal forms seen in infected tissue.
Term
Mycetomas
Definition
lesions involve skin, subcutaneous tissue, fascia, and bone.
Term
Mycetomas
Definition
associated with the formation of granulomas and abscesses that eventually drain by formation of sinus tracts.
f) may see "grains" in sinus tract drainage that represent compact microcolonies of the pathogen(s) (useful for diagnosis)
Term
Phaeohyphomycosis
Definition
solitary cyst-like lesion, pigmented irregular hyphal forms.
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