Mycology Flashcards
What does fungal dimorphism mean?
The same species is capable of existing in two morphological forms (yeast or mold), depending upon enviromental conditions (temperature, nutrients).
Which are the 4 fungal species causing systemic mycosis?
Coccidioides immitis, Histoplasma capsulatum, Blastomyces dermatitidis, Paracoccidioides brasiliensis
Mention 3 species causing opportunistic fungal infections!
Candida albicans, Cryptococcus neoformans, Aspergillus fumigatus, Mucor spp., Rhizopus spp
Mention 3 diseases caused by dermatophytons!
Tinea corporis, tinea capitis, onychomycosis, tinea barbae
Mention 3 fungal genera belonging to the dermatophytons!
Trichophyton, Microsporum, Epidermophyton
What is the route of transmission of Sporothrix schenkii?
Traumatically introduced under the skin.
Mention a Candida infection associated with mucosal surfaces!
Soor, vulvovaginitis
Which species is the most important causative agent of fungal meningitis?
Cryptococcus neoformans
Mention 3 manifestations of Candida albicans infections that are characteristic in AIDS patients!
generalised oral candidiasis (GOC), oesophagitis, endocarditis
What are the different forms of pulmonary aspergillosis?
- Aspergillus ball (in preformed cavities)
- invasive aspergillosis (in immunosuppression)
- allergic bronchopulmonary aspergillosis
What is the usual source of infection in systemic mycoses?
soil
What is the usual site of entry of fungi causing systemic mycoses?
respiratory tract (inhalation)
Which morphological form of Coccidioides immitis can be found in the human body?
spherule
Which human pathogenic fungus has a capsule?
Cryptococcus neoformans
