Immuno Flashcards

1
Q

What does Th1 make

  • what is differentiation induced by
  • what is inhibited by
A

IFNg (activates macrophages)
IL2 (cytotoxic T cells)

Differentation by IFNgamma and IL12

Inhibited by IL4 and IL10

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2
Q

What does TH2 make

  • what is differentiation induced by
  • what is inhibited by
A

IL4, 5, 6, 10 ,13

Diff by IL2 and 4
Inhibited by IFNgamma

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3
Q

What does IL6

A

stimulates production of acute phase proteins

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4
Q

what cytokines are released by macrophages?

A

IL1, 6, 8, 12, TNFa

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5
Q

what does IL8 do

A

major chemotactic factor for neutrophils

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6
Q

what does IL 12 do

A

induces differentiation of T cells into TH1 cells

Activates NK cells

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7
Q

what does TNf alpha do?

  • 3 good
  • bad
A

activates endoderm-needed, causes WBC recruitment, and vascular leak

cachexia in malignancy

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8
Q

What do all T cell secrete?

A

IL2 and 3

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9
Q

What does IL 2 do

A

Stimulates growth of all T cells and NK cells

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10
Q

What does IL3 do

A

Supports growth and differentiation of bone marrow stem cells-like GMCSF

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11
Q

What does IFNgamma do?

A

Secreted by NK cells and T cells in response to antigen or IL12

stim macrophages to kill phagocystosed pathogens
Inhibits Th2 differenation

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12
Q

what does IL4 do

3

A

induces differentiation of T cells to TH2
Promtes growth of B cells
Class switching to IgE and IgG

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13
Q

what does IL5 do

3

A

promotes growth and differentiation of B cells

Enchanges class switching to IgA

Stimulates growth and differentiation of eos

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14
Q

What does IL10 do?

3

A

attenuates inflammatoryresponse=antiinflamtory!

  • decrases expression of MHC class 2 and TH1 cytokines
  • inhibits activated macrophages
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15
Q

IL11

A

megakaryocytic production-use at thrombocytopenia-oprevkin

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16
Q

What does CD14 do?

A

allow macrophages to see LPS in gm- orgs

17
Q

what do lipoteichoic acids do

A

only on gm+

induce TNFa and IL1

18
Q

What three orgs have IgA protease?

A

s phenol, h flu type b, neisseria

19
Q

What is protein A?

A

binds Fc of IgG and prevent opsonization-S aureus

20
Q

What is exotoxin A

A

pseudomonas-inactivates E2F

strep penumo-binds to MHC2 and TCR and causes overwhelming release of cytokines-toxic shock like syndrome/scarlet fever (tech for Staph aureus TSST too/staph scalded skin)