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Flashcards in Fungi Deck (22)
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1
Q

dermatophytoses is referred to as what in humans?

* what is it?

A

“tinea” infections (ringoworm) and named occroding to location
* pathogen of keratinophilic (keratin digesting) soil fungus

2
Q

1) tinea capitis
2) tinea corporis or ringworm
3) tinea barbae
4) tinea faciei
5) tinea cruiris
6) tinea pedis or athletes foot
7) tinea manuum
8) tinea unguium

A

1) tinea capitis =CHILDREN; hair and scalp
2) tinea corporis or ringworm =trunk, extremities, face
3) tinea barbae =hair/skin of face; MEN
4) tinea faciei =non-bearded parts of face
5) tinea cruiris or jock itch =groin
6) tinea pedis or athletes foot =foot
7) tinea manuum =hand(s)
8) tinea unguium =nail

3
Q

what do you use to treat dermatophycosis?

A

anti-fungal/mycotic agent griseofulvin

* treats infections of skin but you take a pill, do not apply to skin

4
Q

cell walls of fungi contain?

A

chitin and B 1:3-linked glucan

5
Q

fungal infections initiate what type of hypersensitivity?

A

type 4

6
Q

where are sterols found?

A

in cell membrane of fungi; most anti-fungal agents target this component

7
Q

SEXUAL spores forming examples?

A

zygospores
ascospores and basidiospores

“BASIcally ASs Sez”

8
Q

what are asexual spores called?

A

conidia

* conidium fungi

9
Q

what means that fungi can form different structures at different temperatures?

A

dimorphism

* molds at ambient temps and YEAST on host tissue/body temp

10
Q

fungi are all G- or G+?

A

G+

11
Q

Contain DNA or RNA?

A

both

12
Q

two forms of fungi?

A

mold

yeast

13
Q

are fungal spores resistance to heat like bacteria?

A

NO

* most completly killed when heated at 80 celcius for 30 min

14
Q

examples of asexual spores (conidia)?

A

1) arthrospores -formed by fragmentation of ends of hyphae
2) chlamydospores - thick wall
3) blastospores -formed by budding
4) sporangiospores -formed by sac on a stalk by molds

15
Q

1) coccidioidomycosis is a disease that infects where first?

2) caused by?

A

1) first infects the Lungs bc you inhale spores

2) caused by coccidioides

16
Q

1) blastomycosis caused by?

2) transmitted how?

A

1) blastomyces dermatitidis

2) initial breath it in, but person to person

17
Q

1) histpplasmosis caused by?
2) endemic where?
3) causes what infections?

A

1) histoplasma capslatum
2) in ohio and MI river valleys
3) cause granulomatous, tuberculosis-like infection, pulmonarynodules

18
Q

what is unique about cryptococcus?

A

NOT dimorphic

19
Q

mucormycosis is typically found in?

A

diabetics or poeple immune suppressed

  • NOT dimorphic
  • typically fatal
  • rhinocerebral infections of sinuses and brain
20
Q

aflatoxins are produced by?

A

aspergillus flavus

21
Q

best known and most intensively researched mycotoxin in the world is?

A

aflatoxins that are produced by aspergillus flavus

22
Q

aflatoxins cause damage to?

A

liver, hepatic carcinoma