Mycology E2, I

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Agent usually responsible for Apergillosis

A. Fumigatus
Apergillosis causes...
____ in chicks
____ in cattle
____ in horses
____ in dogs
- Brooder Pneunomnia in chicks
- Mycotic Abortion in cattle
- Gutteral pouch mycosis/keratomycosis in horses
- Nasal Aspergillosis in dogs
Dx of Aspergillosis
- Deep Scrape (KOH mount)
- Radiograph
- Rhinoscopy
- Culture
- Sereology test
Medium used to culture Aspergillosis

SAB
Tx for systemic aspergillosis in horses:
- Itraconazole +
- Local Ketoconazole
Tx for aspergillosis keratitis in horses:

Netamycin or Miconazole
Tx for nasal aspergillosis in dogs:
- Clotrimazole
- (Fluconazole 2nd
Yeast infections are found where on the body
- Skin
- MM
Three most important yeasts:
- Candida
- Cryptococcus
- Malassezia
Other names for Candida albicans
- Candidiasis
- Moniliasis
- Thrush
Candida albican infections occur where in the body?

Alimentary Tract
Infectious part of candidae, which is found in tissues

Hyphae
Candidiasis albicans causes...
___ in dogs and cats
___ in young animals
___ in poultry
___ in horses
- Mycotic Stomatitis & Genital candidiasis in dogs and cats
- Enteritis in young animals
- Crop Mycosis (thrush) in poultry
- Metritis & vaginitis in horses
Appearance of tissue infected with Candida albicans (macro)

white plaques
What induces Candida albican infections in young animals?

Prolonged Ab tx
Candida albicans takes on what form within the tissues

filamentous
Pathogenesis of Candida sp.
- Adheres to mm
- pseudohyphae invade epithelium
- pseudomembranous ulcerative inflammation
Dx of Candida sp
- KOH wet mount or Gram Stain (budding yeast)
- Culture
- Latex agglutination
Tx for Candida sp
- Topical Nystatin
- Oral Nystatin (GI overgrowth)
- ketoconazole
What type of yeast is found in pigeon droppings?

Cryptooccus neoformans
Habitat for Cryptococcus neoformans
- soil
- pigeon droppings
Pathogenesis of Cryptococcus neoformans
- Airborn
- Nasal granulomas
- paranasal sinuses
- hematogenous dissemination
Symptoms for Cryptococcus neoformans
- Sneezing
- Snuffling
- mucopurulent/hemorrhagic nasal discharge
Dx for Cryptococcus neoformans
- Wet mount
- Culture
- Agg test
Tx for Cryptococcus neoformans
- Itraconazole
- Fluconazone
- (keto not very effective)
Crytococcus virulence factor:

antiphagocytic capsule
What remains in yeast form while in hsot and in environment

Cryptococcus neoformans
Symptoms of Cryptococcus neoformans in cats
- Lesions that spread from sinuses, to skin then eyelid
- Capsular mass in brain= encephalitis
Malassezia pachydermatis causes...
- ____ in dogs
- otitis externa & chronic dermtitis
Virulence factor of Malassezia pachydermatis

lipids that assist in attachment to cell wall
Dx of Malassezia pachydermatis
- Gram Stain
- Wet mount
- SAB and BA cultures
Tx for Malassezia pachydermatis
- Topical Nystatin or Clotrimazole
- Ketoconazole for oral dermatitis
Location of Malassezia pachydermatis infections (on the body):
- Abd
- interdigits

Author

HLW

67846

Card Set

Mycology E2, I

Description

Mycology E2, I

Updated

2011-03-12T01:20:24Z

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