Fungi Flashcards
chitin wall, ergosterol membrane, 80S ribosome, nucleus
fungus characteristics
superficial, subcutaneous or systemic
classification
dry microsporum, trichophyton; epidermoophyton; moist candida
superficial fungi
sporothrix and madurella
subcutaneous
opportunistic and non opportunistic
systemic
pneumocystis, aspergillus and cryptococcus
opportunistic systemic fungi
histoplasma, coccidioides, paracoccidioides, and blastomyces
non opportunistic systemic fungi
keratin is needed to growth : microsporum, trichophyton; epidermophyton
dermatophyte
keratin is not needed: malassezia and candida
non dermatophyte
sporulation, condia (asexual) and zygospores (sexual)
form of reproduction
stains fungi red
periodic acid schiff stain
stains fungi black and grey
gomori methenamine silver stain
specific for fungi: contains dextrose and peptones in an agar medium
sabouraud culture medium
mold (cold): multicellular, branching hyphae; yeast (hot) unicellular, buds
temperature related forms
can exist in both forms depending on the circumstance; candida
dimorphic
decaying vegetation or dry wall; inhalation of spores; cough and hemoptysis
aspergillus fumigatus
US east coast, inhalation of spores; affects skin, bone and lung
blastomyces dermatidis
likes moist skin folds, red itching rash with a cottage cheesy discharge
candida albicans
san joaquin valley fever; spore inhalation, lungs, joints and skin
coccidioides immitis
pigeon poop, spore inhalation, pneumonia, brain abscess, owl eye lesions
cryptococcus neoformans
dermatophyte; tinea pedis with red itchy scaly feet
epidermophyton floccosum
spread by bat droppings
histoplasma capsulatum
rotting vegetation, woodcutters, puncture wound, warty lesions on foot
madurella grisea or mycetomatis
tinea versicolor, hypopigmented rash, spaghetti and meatballs appearance
malassezia furfur
dermatophyte; tinea corporis: ring like lesions with healing centers
microsporum canis
latin american males, spore inhalation, nasal ulceration, spoke wheel
paracoccidioides brasiliensis
spore inhalation; causes pneumonia in an immune compromised pt
pneumocystis jiroveci (carinii)
rotting vegetation, rose gardeners, spread along lymphatics in the limb
sporothrix schenckii