ClinLab4:Mycology (Yeast)

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heather.dundas
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236960
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ClinLab4:Mycology (Yeast)
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2013-09-25 06:01:52
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  1. Mycology
    study of fungi
  2. 3 types of fungi
    • mold
    • mushrooms
    • yeast
  3. budding is similar to what?
    binary fission
  4. any group of parasitic and saprophytic fungi causes cottony growth on organic substances
    mold
  5. saprophytic
    decomposing
  6. aka-systemic fungi
    grow as yeast at body temp
    grow as mold at room temp
    dimorphic
  7. anthrophillic
    found on humans
  8. zoophillic
    found on animals
  9. geophillic
    found in soil
  10. all fungi need less _ than bacteria to grow
    moisture
  11. What do they gram stain as?
    positive purple
  12. yeast alternative uses
    • bread rising
    • beer
  13. All yeast follow these sets of characteristics:UGSPBL
    • unicellular
    • gram +
    • spherical/oval in shape
    • pasty creamy colonies on agar
    • budding
    • larger than GPCOC
  14. What are the 2 possible media to be used on fungi?
    • SAB
    • BAP
  15. Which media is an all purpose fungal media?
    SAB
  16. SAB stands for
    sabourad's dextrose agar
  17. What are the 6 pathogenic yeasts discussed in class?
    CN
    HC
    CI
    BD
    CA
    MP
    • cryptococcus neoformans
    • histoplasma capsulatum
    • coccidioids immitus
    • bastomyces dermatidis
    • candidia albicans
    • malassezia pachydermatitis
  18. crytococcus neoformans is commonly seen in
    cats
  19. cryptococcus has thick
    walls
  20. cryptococcus neoformans is surround by wide _ capsules (microscopically)
    non-staining
  21. cryptococcus neoformans is commonly found in _ excreta
    avian(pigeons)
  22. cryptococcus neoformans MOI
    inhalation(aerosolized)
  23. Cryptococcus neoformans causes what in immunocompromised cats?
    URI
  24. Cryptococcus neoformans can also be found in the _ and _
    blood and brain
  25. Cryptococcus neoformans causes - like lesions on the face
    tumor
  26. Histoplasma capsulatum affects
    • cats
    • dogs
  27. Histoplasma capsulatum is found in the cystoplasm of
    macrophages
  28. Histoplasma capsulatum is found in the soil of OH,MO,MI, and
    the MS river valley
  29. Histoplasma capsulatum forms
    spores
  30. MOI histoplasma capsulatum
    inhalation
  31. Histoplasma capsulatum is found in _ and - droppings
    bird and bat
  32. CS histoplasma capsulatum:c+, wt loss, anorexia, _ _ and _
    • dypsnea
    • URI
    • LRI
  33. Histoplasma capsulatum for _ _ pattern in the lungs whed radiographed
    nodular institial pattern )covering entire lung)
  34. Coccidioides immitus is what kind of morphic?
    dimorphic!
  35. Coccidioides immitus is found in soil ans _-_ areas like CA,NV,UT,AZ,TX,NM
    semi-arid
  36. Coccidioides immitus can lie dormans for _ to _ and cause infx when animal is immunocompromised
    weeks to years
  37. young _ _ are more predisposed to Coccidioides immitus
    male dogs
  38. semi-arid
    • sandy soil
    • mild summers
  39. What do Coccidioides immitus spores look like when grown at room temp?
    square w/ hyphae
  40. What do Coccidioides immitus spores look like when grown at body temp?
    • round
    • cloudy
    • fuzzy
  41. Is Blastomyces dermatitidis dimorphic?
    yes
  42. Blastomyces dermatitidis is usually found in soil forming _ at room temp
    hyphae
  43. Blastomyces dermatitidis forms
    spores
  44. MOI Blastomyces dermatitidis
    inhalation
  45. Blastomyces dermatitidis forms colonies in
    resp tract
  46. Blastomyces dermatitidis is more common in
    hunting dogs
  47. What are the 3 forms of Blastomyces dermatitidis?PDC
    • primary pulmonary
    • disseminated dz
    • localized dz
    • localized cutaneous lesion
  48. Is Candidia albicans dimorphic?
    yes
  49. Candidia albicans cause what in humans?
    thrush
  50. Candidia albicans causes _ and _ in avians
    • stomatitis
    • pneumonia
  51. Candidia albicans is normal flora in avians until
    they become immunocompromised
  52. Malassezia pachydermatis commonly causes:OD
    • otitis externa
    • dermatitis
  53. dx for Malassezia pachydermatis includes impressions and smears, but never
    scrapes
  54. 10% _ can be added to Malassezia pachydermatis samples to get rid of debris
    KOH

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