(12) Mycology II

Question 1

(Systemic Mycosis)

(coccidiomycosis)

1. causes similar stuff as the others

Question 2

(Systemic Mycosis)

(coccidiomycosis)

(coccidioides immitis)

1. occurs in what species?
2. what kind of infections?
3. what with granulomas?
4. main route of infection?

Answer 2

1-3 look at pic

4. inhalation

Question 3

(Systemic Mycosis)

(coccidiomycosis)

(diagnosis)

1-2.what two?

Answer 3

1. serology-agar gel precipitation test
2. identification of the agent in tracheal wash

Question 5

(Systemic Mycosis)

(cyrptococcus)

(cryptococcus neoformans)

1. where found?
2. route of ifection?
3. what kind of infections?
4. virulence factor?

also produce what to protect fungal cells from immune effector cells?

Answer 5

1. in soil - esp in pigeon droppings
2. ihalation
3. cutaenous and lung lesions
4. capsule - inhibits phags

melanin

Question 6

(Systemic Mycosis)

(cyrptococcus)

(diagnosis)

1. what is used to dye these?
2. what samples?

Answer 6

1. india ink
2. nasal swabs/washings, needle aspirates from nodules or enlarged lymph noes

Question 7

(Systemic Mycosis)

(cyrptococcus)

1. what speices common in dogs?
2. in cats?
3. which gets more lesions on face?
4. any vx?
5. can you treat?

Answer 7

1. crytpococcus neoformans (rare in cats)
2. cryptococcus gattii
3. cat
4. no
5. yes - with antifungals

Question 8

(Opportunistic Mycoses)

1. what are two that do this?

Answer 8

1. aspergillus and candida

Question 9

(Opportunistic Mycoses)

(Aspergillus)

1. predominant species is what?
2. most common mycosis of what?

Answer 9

1. A. fumigatus

2. poultry and caged birds

(sheep, calves, horses affected - can cause abortions)

Question 10

he skipped right over this slide - but gander it

Question 11

what pH preferred for growing mycotic agents?

Answer 11

low ph

Question 12

(Opportunistic Mycoses)

(Aspergillus)

1. some produce what toxins?

do what?

Answer 12

1. aflatoxins (moldy feed)

necrosis, cirrhosis, and carcinomas in the liver

NEVER SNIFF FUNGI ON PLATES

Question 13

(Opportunistic Mycoses)

(Candida)

(Candida Albicans)

1. candiadiasis
2. what form is infective

what form is found in animals?

3. can frequently be found where?
4. who is predisposed to infection?
5. virulence factors include… adhesins, extracellular proteases, lipases/phospholipases

Answer 13

2. yeast

yeast

3. normal flora of oral cavity, digestive and genital tracts of most mammals and birds
4. immunocompromised

Question 14

(Opportunistic Mycoses)

(Candida)

(Pathogenesis)

1. normally starts as commensal –> overgrowth –> cutaneous –> mucosal surfaces (digestive, genital tract
2. can it become systemic?
3. very common in birds
4. thrush
5. it is treatable

Answer 14

2. yes