chapitre 3 s aureus Flashcards

1
Q

infos gen

A

15-20% porteurs sains
résistant à MRSA
opportuniste (X barrière cutanée)

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2
Q

protéines A

A

anticorps lie à mauvaise orientation
bact moins ciblée pour phagocytose

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3
Q

coagulase

A

fibrinogène –> fibrine
se cache de pagocytose

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4
Q

leucocidine

A

apoptose cellules sys immune + autres cell site de libération –> forme pus
XXX nouvelles cell immune

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5
Q

hémolysine

A

lyse globules rouges
pores dans membrane
utilise nutriments libérés

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6
Q

exfoliatine

A

détruit protéines lie kératinocytes
dissémination de bact dans tissus profonds

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7
Q

TSST1

A

toxine du choc toxique staphilococcique

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8
Q

TSST1 (rôle)

A

superantigène
réaction immune +++++ (lymphocytes T)
MORTEL

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