autoimmunity Flashcards
Genetic factors
B27- ankylosing spondylitis
DR2- Good pasture syndrome
DR3- Sicca syndrome
autoimmunity
ankylosing spondylitis
affects more males
organ specific A.I
Endocrine glands
pemphigus and pemphigoid
Pemphigus affects the outer of the skin (epidermis) and causes lesions and blisters that are easily ruptured. Pemphigoid affects a lower layer of the skin, between the epidermis and the dermis, creating tense blisters that do not break easily. Sometimes pemphigoid may look like hives or eczema without blisters.
SLE
DNA specific T cells escape the thymus
T cell help and low level antibodies against DNA
-infection leading to apoptosis and interferon secretion
DNA/antibody complexes
problem
non specific
suppress immune system