Yeast Flashcards
animal more severely affected by cryptococcus neoformans
cats – systemic mycosis
major virulence factor of cryptococcus neoformans
very thick capsule – prevents phagocytosis, stimualte T regulatory cells, inactivates alternative complement pathway activation
growth of cryptococcus neoformans
encapsulation optimal on chocolate agar
SDA
what can cryptococcus neoformans be present in for up to 1 year and why
dried pigeon feces – high creatinine content
transmission of cryptococcus neoformans
respiratory
primary site of infection in cats for cryptococcus neoformans
nasal cavity
what exotic animal can cryptococcus neoformans affect
koalas – respiratory infections
what type of immunity important for cryptococcus neoformans
cell mediated immunity – macrophage activation
what does serology detect in cryptococcus neoformans
detection of antibodies to capsule
growth of Malassezia pachydermatis
blood agar
colonies with greenish tint
aerobic or microaerophilic
normal habitat of Malassezia pachydermatis
skin, ear canal
dogs, cats, ferrets, ruminants
diseases associated with Malassezia pachydermatis
otitis externa
dermatitis
transmission of Malassezia pachydermatis
opportunistic
associated with otehr skin diseases
breeds susceptible
australian silky terrier
basset hounds
cocker spaniels
doxin
poodle
west highland white terrier
diagnosis of Malassezia pachydermatis
bottle or shoe print shaped yeast
SDA
PCR
what type of hypersensitivity is Malassezia pachydermatis associated allergic dermatitis
type 1 hypersentitivity
habitat of Candida albicans
nromal flora of mucous membranes
who susceptible to Candida albicans infection
immunocompromised
what allows Candida albicans to grow
changes in normal flora due to overuse of antibiotics, steroids, and hormones
where is Candida albicans present
mucocutaneous areas
GI tract
genital tract
mammals and birds
transmission of Candida albicans
endogenous infections – commensal microorganism
hematogenosu spread – systemic infection
pathogenesis of Candida albicans
whitish to yellow grey palques with areas of ulceration and inflammation
systemic spread – respiraotry, intestinal
diseases of Candida albicans in birds, swine, horse
GI tract
diseases of Candida albicans in cattle
pneumonic, enteric, mastitis, systemic
diseases of Candida albicans in dogs, cats
non healing ulcerative lesions on oral and upper respriaotry mucosa, GI mucosa, genitourinary tract
diagnosis of Candida albicans
blastoconidia and pseudohyphae observation
treatment of birds with Candida albicans
copepr sulfate in water, nystatin
treatmetn of mammals with Candida albicans
amphotericin B
itraconazole
miconazole
treatment of dogs and cats with Candida albicans
fluconazole
fluctyosine
