PATH - Complement disorders Flashcards
1
Q
C1 esterase inhibitor deficiency
A
Causes hereditary angioedema due to unregulated activation of *kallikrein–>INC bradykinin
ACE inhibitors are contraindicated
2
Q
C3 deficiency
A
Increases risk of severe, recurrent pyogenic sinus and respiratory tract infections
susceptibility to *type III hypersensitivity reactions
3
Q
C5–C9 deficiencies
A
Terminal complement deficiency INC susceptibility to recurrent *Neisseria bacteremia
4
Q
DAF (GPI-anchored enzyme) deficiency
A
Causes complement-mediated lysis of RBCs and *paroxysmal nocturnal hemoglobinuria