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Agents of Opportunistic Mycoses and Yeast Infections Flashcards

1
Q

Identify the opportunistic mycoses.

“white cottony colony”

A

Cunninghamella

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2
Q

Identify the opportunistic mycoses.

  • implicated in Rhinocerebral Zygomycosis
A

Mucor

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3
Q

Identify the opportunistic mycoses.

  • black bread mold
  • most common mucorales
  • rhinocerebral mucormycosis
A

Rhizopus

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4
Q

Identify the opportunistic mycoses.

  • documented in cutaneous infections
  • confused with Aspergillus spp.
A

Syncephalastrum

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5
Q

Identify the opportunistic mycoses.

  • smooth ovoid sporangium
  • from diabetic patients with ketoacidosis
A

Absidia/Lichteimia

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6
Q

Identify the opportunistic mycoses.

  • 2nd most isolated fungus after Candida spp.
A

Aspergillus

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7
Q

What is the mode of transmission for Aspergillus?

A

inhalation of fungal conidia

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8
Q

What is the predisposing factor of Aspergillus?

A

Neutropenia

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9
Q

What disease manifests fungus balls (aspergilloma)?

A

Aspergillosis

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10
Q

Identify the opportunistic mycoses.

  • mycotic keratitis
  • on contact lens users
  • banana-shaped macroconidia
A

Fusarium

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11
Q

Identify the opportunistic mycoses.

  • on brains
  • IV drug abuse
A

Chaetomium

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12
Q

Identify the opportunistic mycoses.

  • pineapple-shaped perithecia
  • lemon-shaped ascospores
A

Chaetomium

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13
Q

Identify the opportunistic mycoses.

  • laboratory contaminants
A

Cladosporium

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14
Q

Identify the agent of yeast infection.

  • most notorious agent of yeast infection
A

Candida albicans

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15
Q

What refers to the infection of oral mucosa that indicates signs of immunosuppression (HIV patients)?

A

Oral thrush

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16
Q

Identify the agent of yeast infection.

  • a major cause of opportunistic infection in AIDS patients
  • soil contaminated by pigeon droppings, bat droppings, and decaying vegetation
A

Cryptococcus neoformans

17
Q

Identify the agent of yeast infection.

  • a major cause of opportunistic infection in AIDS patients
  • soil contaminated by pigeon droppings, bat droppings, and decaying vegetation
A

Cryptococcus neoformans

18
Q

What is the mode of transmission of Cryptococcus neoformans?

A

inhalation

19
Q

Identify the agent of yeast infection.

  • mucoid colonies
  • encapsulated budding yeast cells
A

Cryptococcus neoformans

20
Q

What is the specimen source for C. neoformans?

21
Q

What is the stain used for the identification of C. neoformans?

22
Q

Identify the agent of yeast infection.

  • implicated in oral, pulmonary, skin/wound infections of immunocompromised hosts
  • rectangular spores with rounded ends
  • abundant arthroconidia
A

Geotrichum candidum

23
Q

Identify the agent of yeast infection.

  • has a bright salmon-pink color
  • related to cryptococci
A

Rhodoturula spp.

24
Q

What species inhabit the lungs of mammals?

A

Pneumocystis species

25
Q

Which Pneumocystis spp. was formerly classified as a protozoan and is commonly found in rats?

A

P. carinii

26
Q

Which Pneumocystis spp. is commonly recovered in humans?

A

P. jirovecii

27
Q

Identify the life stage of a Pneumocystis spp.

  • 1-3μm, irregular shape
A

trophozoite

28
Q

Identify the life stage of a Pneumocystis spp.

  • 5-8μm
29
Q

Identify the life stage of a Pneumocystis spp.

  • 8μm
  • infective stage
30
Q

What species has a “punched-out ping-pong ball” appearance of cysts?

A

Pneumocystis spp.

31
Q

What is the commonly isolated Aspergillus species?

A

Aspergillus fumigatus

32
Q

What Aspergillus species manifest yellow color?

A

Aspergillus flavus

33
Q

What Aspergillus species manifest black color?

A

Aspergillus niger

34
Q

What Aspergillus species manifest dusty pink color?

A

Aspergillus ferreus

35
Q

What is the 2nd most common pathogenic species?

A

Candida glabrata

Fungi (8 decks)

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