hypersensitivity reactions Flashcards
1
Q
type I
A
inappropriate production of specific IgE antibodies to harmless antigens (peanuts, penicillin, pollen). responsible for asthma, hayfever, penicillin allergy
2
Q
type II
A
IgG and IgM antibodies binding to antigens, cells or tissues leading to cell or tissue damage. rheumatic fever
3
Q
type III
A
antibody- antigen complexes being deposited in tissues. activates complement system leading to inflammation.
4
Q
type IV
A
CD4 + t helper cells travelling to site of antigen recruits macrophages leading to inflammation. TB
5
Q
examples of type I
A
asthma, hayfever, pencillin allergy
6
Q
examples of type II
A
good pastures syndrome, rheumatic fever
7
Q
examples of type III
A
Hypersensitivity pneumonitis (farmers lung)
8
Q
examples of type IV
A
TB, chronic hypersensitivity pneumonitis
