title: [Acquired angioneurotic edema. Clinical and biological characteristics in 9 patients].
abstract: OBJECTIVE
  Angioneurotic edema (AE) is a rare but severe disease. Hereditary AE is the more well-known form. The acquired form is exceptional: the symptoms are the same but there are some biologic and treatment differences. We investigated the clinical and biochemical features in nine patients with acquired angioneurotic edema (AAE).
  
  
  METHODS
  Four of the patients with type I AAE presented an accelerated metabolism of C1Inh, associated with a hematology disease. Their C4, C1q and C1Inh plasma levels were low. Four patients had type II AAE associated with an autoantibody to C1Inh. Their C1Inh plasma levels were normal or low but the functional levels were low in all four. One patient had AAE induced by oral contraceptives. The C1Inh plasma level was normal but the functional level was very low; there were no autoantibodies. Symptoms resolved when oral contraceptives were withdrawn and the C1Inh level returned to normal.
  
  
  CONCLUSIONS
  Treatment of AAE is a difficult matter. For type I AAE, it consists in treating the associated disease. For type II AAE, the treatment goal is to lower the autoantibody level. Management of these diseases requires close collaboration between clinicians and biologists.
authors.affiliation: Service de Médecine interne, Hôpital sud, CHU de Grenoble.
authors.forename: L
authors.initials: L
authors.lastname: Bouillet
authors.forename: D
authors.initials: D
authors.lastname: Ponard
authors.forename: C
authors.initials: C
authors.lastname: Drouet
authors.forename: C
authors.initials: C
authors.lastname: Dumestre
authors.forename: M
authors.initials: M
authors.lastname: Pernollet
authors.forename: J J
authors.initials: JJ
authors.lastname: Bonerandi
authors.forename: D
authors.initials: D
authors.lastname: Caillaud
authors.forename: M
authors.initials: M
authors.lastname: D'Incan
authors.forename: M
authors.initials: M
authors.lastname: Hacini
authors.forename: J R
authors.initials: JR
authors.lastname: Harle
authors.forename: B
authors.initials: B
authors.lastname: de Wazières
authors.forename: M
authors.initials: M
authors.lastname: Colomb
authors.forename: C
authors.initials: C
authors.lastname: Massot
mesh_terms: D000328:Adult; D000368:Aged; D000799:Angioedema / Q000175:diagnosis* / Q000209:etiology / Q000276:immunology; D001323:Autoantibodies / Q000097:blood; D003174:Complement C1 Inactivator Proteins / Q000276:immunology / Q000378:metabolism; D015922:Complement C1q / Q000378:metabolism; D003181:Complement C4 / Q000378:metabolism; D003276:Contraceptives, Oral / Q000009:adverse effects; D004342:Drug Hypersensitivity / Q000175:diagnosis / Q000276:immunology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D001323:Autoantibodies; D003174:Complement C1 Inactivator Proteins; D003181:Complement C4; D003276:Contraceptives, Oral; D015922:Complement C1q