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B&M Final > Yeast > Flashcards

Yeast Flashcards

1
Q

animal more severely affected by cryptococcus neoformans

A

cats – systemic mycosis

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2
Q

major virulence factor of cryptococcus neoformans

A

very thick capsule – prevents phagocytosis, stimualte T regulatory cells, inactivates alternative complement pathway activation

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3
Q

growth of cryptococcus neoformans

A

encapsulation optimal on chocolate agar
SDA

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4
Q

what can cryptococcus neoformans be present in for up to 1 year and why

A

dried pigeon feces – high creatinine content

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5
Q

transmission of cryptococcus neoformans

A

respiratory

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6
Q

primary site of infection in cats for cryptococcus neoformans

A

nasal cavity

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7
Q

what exotic animal can cryptococcus neoformans affect

A

koalas – respiratory infections

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8
Q

what type of immunity important for cryptococcus neoformans

A

cell mediated immunity – macrophage activation

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9
Q

what does serology detect in cryptococcus neoformans

A

detection of antibodies to capsule

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10
Q

growth of Malassezia pachydermatis

A

blood agar
colonies with greenish tint
aerobic or microaerophilic

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11
Q

normal habitat of Malassezia pachydermatis

A

skin, ear canal
dogs, cats, ferrets, ruminants

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12
Q

diseases associated with Malassezia pachydermatis

A

otitis externa
dermatitis

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13
Q

transmission of Malassezia pachydermatis

A

opportunistic
associated with otehr skin diseases

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14
Q

breeds susceptible

A

australian silky terrier
basset hounds
cocker spaniels
doxin
poodle
west highland white terrier

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15
Q

diagnosis of Malassezia pachydermatis

A

bottle or shoe print shaped yeast
SDA
PCR

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16
Q

what type of hypersensitivity is Malassezia pachydermatis associated allergic dermatitis

A

type 1 hypersentitivity

17
Q

habitat of Candida albicans

A

nromal flora of mucous membranes

18
Q

who susceptible to Candida albicans infection

A

immunocompromised

19
Q

what allows Candida albicans to grow

A

changes in normal flora due to overuse of antibiotics, steroids, and hormones

20
Q

where is Candida albicans present

A

mucocutaneous areas
GI tract
genital tract
mammals and birds

21
Q

transmission of Candida albicans

A

endogenous infections – commensal microorganism
hematogenosu spread – systemic infection

22
Q

pathogenesis of Candida albicans

A

whitish to yellow grey palques with areas of ulceration and inflammation
systemic spread – respiraotry, intestinal

23
Q

diseases of Candida albicans in birds, swine, horse

A

GI tract

24
Q

diseases of Candida albicans in cattle

A

pneumonic, enteric, mastitis, systemic

25
Q

diseases of Candida albicans in dogs, cats

A

non healing ulcerative lesions on oral and upper respriaotry mucosa, GI mucosa, genitourinary tract

26
Q

diagnosis of Candida albicans

A

blastoconidia and pseudohyphae observation

27
Q

treatment of birds with Candida albicans

A

copepr sulfate in water, nystatin

28
Q

treatmetn of mammals with Candida albicans

A

amphotericin B
itraconazole
miconazole

29
Q

treatment of dogs and cats with Candida albicans

A

fluconazole
fluctyosine

B&M Final (4 decks)

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