HOOFDSTUK 14 Flashcards

Humorale immuniteit

1
Q

CR2, CD19, CD81

A

B-cel coreceptor
CR2 bind C3d

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2
Q

CD40L

A

Costimulus van Th cel op B-cel (CD40)-> isotype switching en affiniteitsmaturatie
=> plasmacellen en geheugencellen

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3
Q

BLIMP1

A

zorgt voor finale differentiatie tot plasmacel

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4
Q

TNF of Lymfotoxine (LT)

A

differentiatie fibroblasten -> FDC

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5
Q

M(icrofold)-cellen

A

Cellen in darmmucosa
Brengen antigenen uit darm naar Peyerse platen voor captatie door DC

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6
Q

CCR9 en CCL25

A

Homing van geactiveerde T-cellen naar darmmucosa

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7
Q

IgM

A

Pentameer, gevormd in LN, beenmer, milt
Bindt heel sterk complement
Penetreert moeilijk in extracellulaire vloeistoffen door grootte, vooral in bloedbaan
Geen celgebonden receptoren voor IgM
Lage affiniteit, amper neutraliserend effect

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8
Q

IgG

A

Dominante Ig van immmuunsysteem, gevormd in beenmerg
Bindt complement, Fc receptoren
Neutraliserend effect door hoge affiniteit

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9
Q

IgA

A

Gevormd door plasmacellen in MALT (dimeer), milt en LN (monomeer)
Monomeer: in bloed, neutralisatie van pathogenen
Dimeer: in extracellulaire vloeistoffen
Wekt minder inflammatie op (veel in darm)

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10
Q

FcRn

A

Transporteert IgG over epitheliale cellen van bloed naar extracellulaire vloeistof (bv darmlumen)
+ IgG transport van moeder naar kind (FcRB)

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11
Q

Poly-Ig receptor

A

Transport van IgA over epitheelcellen naar lumen

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12
Q

IgE

A

bindt aan mastcellen

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13
Q

Haemagglutinine

A

Viraal eiwit, dringt epitheliale cellen binnen door binden op oligosacchariden (IgA hiertegen -> geen infectie)

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14
Q

Bacteriële adhesines

A

Bacteriën kunnen zich hierdoor vasthechten op epitheel (IgA hiertegen -> geen adhesie)

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15
Q
A
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