MYCOVIRO - CH 61 book Flashcards Preview

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Flashcards in MYCOVIRO - CH 61 book Deck (57):
1

agents of superficial and subcutaneous mycoses

Dematiaceous (Melanized) Molds

2

Found everywhere (ubiquitous) and saprophytic

Dematiaceous (Melanized) Molds

3

nutrition of melanized mold

saprophytic nutrition

4

exist as plant pathogens

Dematiaceous (Melanized) Molds

5

Produce melanin resulting observable dark coloration

Dematiaceous (Melanized) Molds

6

CA of tinea nigra

Hortaea werneckii

7

superficial infection manifested by macular patches on the palm of the hand or sole of the foot

tinea nigra

8

superficial infection in which
Skin lesions are stained with silver nitrate staining

tinea nigra

9

skin lesions of tinea nigra are stained with

silver nitrate staining

10

CA of black piedra

Piedraia hortae

11

Infection of the hair, scalp and occasionally the axillary and pubic hair

black piedra

12

superficial infection known as Madura Foot

mycetoma

13

other name of mycetoma

madura foot

14

Chronic, granulomatous infection usually involving the lower extremities

mycetoma

15

mycetoma involves what body part

lower extremities

16

black piedra infects what body part (4)

hair, scalp and occasionally the axillary and pubic hair

17

white piedra infects what body part

palm of the hand or sole of the foot

18

mycetoma characterized by (3)

1. swelling
2. purplish discoloration
3. Tumorlike deformities of the subcutaneous tissue and multiple sinus tracts that drain pus
containing yellow, white, red, or black granules (depends on infecting organism

19

2 types of mycetoma

actinomycotic
eumycotic

20

mycetoma caused by aerobic actinomycetes (Nocardia, Actinomadura and Streptomyces spp.)

Actinomycotic (bacterial) mycetoma

21

CA of Actinomycotic (bacterial) mycetoma (3)

Nocardia
Actinomadura
Streptomyces

22

Subcategories of eumycotic mycetoma

white grain mycetoma
black grain mycetoma

23

mycetoma caused by heterogeneous group of fungi that have septated hyphae

Eumycotic (fungal) mycetoma

24

CA of white grain mycetoma (4)

P. boydii
Acremonium
Fusarium
Scedosporium

25

most common CA of white grain mycetoma

Pseudollescheria boydii (

26

Pseudollescheria boydii is found where (3)

standing water, soil, sewage

27

CA of black grain mycetoma (3) EMC

Exophiala jeanselmei
Cuvularia
Madurella mycetomatis

28

Chronic fungal infection acquired through traumatic inoculation

Chromoblastomycosis

29

Chromoblastomycosis is acquired through

traumatic inoculation

30

Characterized by development of papule at the site of inoculation that spreads to form warty or
tumorlike lesions resembling cauliflower

Chromoblastomycosis

31

Chromoblastomycosis: tumorlike lesions resemble __

cauliflower

32

Chromoblastomycosis is characterized by development of ___

papule at site of inoculation

33

body parts involved in Chromoblastomycosis

feet, legs, may spread to other sites

34

microscopic determinant of chromoblastomycosis

sclerotic bodies

35

Copper-colored, septate cells resembling copper pennies

sclerotic bodies

36

sclerotic bodies causes __ of epidermis

hyperplasia

37

CA of chromoblastomycosis (3)
CPF

Cladosporidium/Cladophialophora spp.
Phialophora spp.
Fonsecaea spp.

38

Fungal brain abscess is formerly known as

cerebral chromoblastomycosis

39

cerebral chromoblastomycosis new name

fungal brain abscess

40

Fungal brain abscess now considered a type of

phaeohyphomycosis

41

General term for any infection caused by a dematiaceous organism

phaeohyphomycosis

42

infection which may be subcutaneous, localized or systemic

phaeohyphomycosis

43

CA of brain abscess (3)

Cladophialophora bantiana
Exophiala dermatitidis
Bipolaris

44

CA of sinusitis
(4) ABCE

Alternaria
Bipolaris
Exserohilum
Curvularia

45

CA of Mycotic keratitis amd endophthalmitis

E. dermatitidis, Bipolaris, Curvularia spp.

46

microscopic (lab dx)
observe dematiaceous hyphae and small budding yeast cells and/or hyphal
fragments
what superficial infection

Tinea nigra

47

Conidia are produced by annellophores, containing successive rings called annelides

H. werneckii

48

Colonies are olive to black, shiny and yeastlike

H. werneckii

49

Lab Dx
Microscopic: Infected hairs are examined in wet mounts using KOH
what superficial infection

Black piedra

50

nodules composed of cemented mycelium

Black piedra

51

Nodules contain spindle-shaped asci that has a filament at each pole and contains 2 to 8
aseptate ascospores

Black piedra

52

Does not sporulate on routine mycologic media

Piedraia hortae

53

P. hortae susceptible to

cycloheximide

54

susceptible to cycloheximide

Piedraia hortae

55

may produce red to brown pigment in culture

Piedraia hortae

56

Highly septate, dematiaceous hyphae with swollen intercalary cells

Piedraia hortae

57

Dark brown to black colonies with aerial mycelium

Piedraia hortae

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