Details Title: 16.Medical Microbio - Fungi Description: Finished Total Flash Cards: 21 Created: 12/15/2008 13:43:28		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Biology Flashcards
Cards in this set: Term Mycology Definition Study of Fungi Term Fungi Definition eukaryotic cells that lack chlorophyll Term Actinomycetes Definition -morphologically similar to fungi, but prokaryotic -encompasses 8 different bacteria families -gram positive, filamentous, and branching   Two that cause human disease:   -Actinomyces Israelii  -Nocardia Term Nocardia Asteroids Definition Actinomycetes NOT part of normal flora -gram positive (weakly) and acid fast -found in soil   Grows in lungs after inhalation Can infect regions such as pleura or brain   Treatment: Sulfa drugs Term Actinomyces Israelii Definition -normal flora in mouth and GIT -trauma to mucous membrane allows it to get in. -causes a granulomatous infection  -bone destruction is common.     Treatment:  Surgical drainage and/or Penicillin Term Treatment for Nocardia and Actinomyces Definition SNAP   Sulfa for Nocardia   Actinomyces give Penicillin Term yeast Definition unicellular growth form of fungus reproduce by budding   pseudohyphae - long chains of unseparated buds Term Molds Definition aka. mycelia multicellular clumps of hypahe produce spores Term Dimorphic Fungi Definition Fungi that can grow in either yeast or mold forms depending on the environmental conditions Term Saprophytic fungi Definition -fungi that live in and utlize organize matter as their energy source. Term Fungal infections based on location Definition Mucocutaneous - rarely fatal   Deep organ - often fatal Term Fungal infections based on Epidemiology Definition Endemic mycosis - infections that are not acquired from noraml human flora. -infections usually acquired via inhalation   Opportunistic mycosis - infections by commensal when immunological response of host is comprimised.   Term Fungi Cell membrane Definition Bilayered inner most layer around fungal cytoplasm   Term Fungi Cell wall Definition Made of chitin (Carb) surround the outside of the cell membrane Term Fungi Capsule Definition polysaccharide coating on the outside of cell wall -use India ink stain to visualize Term Pityriasis versicolor Definition superificial fungal infection -caused by Malassezia furfur -hypopigmented patches surrounded by tanned areas Term Tinea nigra Definition -superficial fungal infection -caused by Exophiala werneckii -Dark brown patches on hands and feet Term Treatment of superficial fungal infections Definition -shampoo w/ selenium sulfide -Imidazole topical application. Term Dermatophytosis Definition fungal infection in skin, hair and nails Keratinase - secreted by fungi, causes nails to crumble   common dermatophytes:  microsporium.... Term Cutaneous fungal infection Definition Candida albicans - can cause oral thrush, diaper rash and vaginitis   Can also get opportunistic infections in AIDS patients like oesophagitis. Term Systemic Fungal infections Definition caused by three dimorphic fungi   Cause Pneumonias       Aspergillus Flavus:  -causes Aspergillosis ie. pneumonia in an immune comprised patient   use antifungals like Amphotericin B