Type I – Immediate or Allergic - 2
•Mechanism of tissue damage: - cont=d
•Uin subsequent allergen exposure the allergen binds with IgE on sensitized mast cells
•allergen must bind to 2 or more IgE molecules before mast cell will secrete mediators:
•eosinophil chemotactic factor
•histamine
•prostaglandins
•Sensitized mast cell