Immuno E2, V

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Author:
HLW
ID:
69066
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Immuno E2, V
Updated:
2011-02-26 13:40:21
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Immuno
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Immuno E2, V
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  1. Functions of Complement Proteins:
    • Ab/Non-Ab lysis
    • Opsonization for phagocytosis
    • Inflammation
    • Mast Cell Degranulation
    • Clear immune complexes
  2. Two pathways that activate the complement system
    • Alternate/Natural Pathway
    • Classical/Specific Pathway
  3. The Alternate Pathway is also called...
    • The lectin pathway
    • (or Natural)
  4. Which pathway is activated by the microbe alone?
    Alternate
  5. Which pathway is activated by Ab?
    Classical
  6. Which pathway is AKA the Lectin Pathway?
    Alternate
  7. What part of the Ab activates the Complement Protein C1?
    Fc Region
  8. Which classes of Ab trigger the Classical Pathway?
    • IgG
    • IgM (more efficient)
  9. Which class of Ab is more efficient at triggering the Classical Pathway? Why?
    IgM- Has closely spaced C' binding sites
  10. The Classical Pathway reqires two Ig?
    IgM
  11. When does C1 bind to the Ab in the Classical pathway?
    AFTER Ab binds to Ag
  12. The ultimate task of the Complement Cascade is to form the ____, which leads to ____
    • Membrane Attack Complex
    • Cell Lysis
  13. What are the end products of proteolysis and what happens to them?
    • Small Protein- remains bound to complex at the surface of pathogen
    • Peptide- diffuses away for other tasks (Mast Cell/Basophil degran and chemotaxis of neutrophils)
  14. The complement system is effective in lysing (4):
    • G- Bacteria
    • Enveloped Viruses
    • Parasites
    • Fungi
  15. How does Strep evade the Comp. System?
    Capsule that prevents MAC insertion and C3b deposition
  16. Bact can inactivate Comp. System via
    Elastases
  17. How do some viruses evade the Comp. System?
    They possess protiens that mimic regulatory proteins
  18. How do Tumor Cells evade the Comp. System?
    They can endocytose MAC and seal up the membrane

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