Fongi Flashcards

1
Q

caractériques des fongi

A
aérobie
croissance plus lente que bactéries 
levure
moissisures
fongi dimorphique: peuvent exister sous deux formes 
levure et moissisure
pH optimal: 6
c eucaryotes donc insensible a pluspart des antibio
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2
Q

moisissure

A

prodn de filaments ramifie hyphes
les hyphes se dev et forment des mycelium (treilis ou reseau)

hyphe peut etre segmente ou non (differenciation de pathogene)

hyphes aeriens portent spores asexues de reprodn (aspect duveteux)

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3
Q

levure

A

grosses c rondes

se / par bougeonnement (MEDVET) ou prodn de spore

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4
Q

agent de mycoses

- categorie

A
mycose syperficielle
- de la peau
-sous cutanee
-murqueuse
mycose profondes ou internes
mycotoxicoses
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5
Q

mycoses de la peau

dermatophytes

A

moisissures; utilisation de la kératine pour croitre
invasion peau et poil
sort de facon circulaire
zoonose

-si invasion a lext de la limite externe du poil : ectothrix
invasion complete:
endothrix

3 genres:

  • microsporum
  • trichophyton
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6
Q

dermatophytes

souches

A

géophiles
m. gypseum
m nanum

zoophiles
M canis
T verrucosum
T equinum

anthropophiles
T mentagrophytes
T tonsurans
M andouini

dermatophytose/ dermatomycose: teigne

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7
Q

mycose sous cutanee

A

sporothrix spp
fongus dimorphique
parasite facultatif
infection granulomateuse: sporothricose

sporothrix schenkii

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8
Q

levure

A
  • candida
  • malassezia
  • cryptococcus
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9
Q

candida

A

C albicans
bourgeonnement
cause:
antibiotherapie prolongee

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