Hypersensitivity Flashcards
What regulates cellular immunity. Is protective -clear infected or mutant cells -activate macrophages Pathological -Cell-mediated hypersensitivities
TH1
This regulates humoral immunity.
Antibody-mediated hypersensitivities
TH2
Allergy/Anaphylactic/Atopy/Immediate
ACID
Type 1
Cell-bound antigen/Cytotoxic
ACID
Type 2
Immune Complex
ACID
Type 3
Delayed-Type
ACID
Type 4
Can a primary (first-time) exposure cause a true allergic reaction?
No
First exposure sensitized to allergen
Subsequent exposures damage
If something is IgE mediated what type is it?
Type 1!
IgE will dock on mast cells and ________-
Basophils
If you have systemic release of histamine what happens to Blood pressure?
It decreases
Early phase type 1 response
Degranulation:
Histamine and IgE related
Heparin
Eosinophil chemotactic factor A
Late-phase response (2-4 hrs post)
Arachidonic acid cascade
-leukotrienes are 1000 times more potent than histamine
SRS-A
Are leukotrienes!
Slow reacting substance of anaphylaxis!
Localized disorder of allergy
Atopy
Allergic rhinitis
Localized: hay fever