title: Autoimmune acquired form of angioedema that responded to danazol therapy.
abstract: A 51-year-old man with recurrent episodes of angioedema was diagnosed as having autoimmune acquired angioedema, based on adult onset, lack of apparent family history, decreased activity of C1 esterase inhibitor (C1 INH) and CH50, decreased levels of serum C4 and Clq and the presence of autoantibodies to C1 INH. The danazol treatment relieved the symptoms of angioedema and increased the C1 INH activity and concentration with the normalization of CH50, C1q and C4 levels. To our knowledge, this is the first case of autoimmune acquired angioedema in Japan.
authors.affiliation: Third Department of Internal Medicine, Osaka University Medical School, Suita.
authors.forename: Shinji
authors.initials: S
authors.lastname: Higa
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Hirata
authors.forename: Seigou
authors.initials: S
authors.lastname: Minami
authors.forename: Shouji
authors.initials: S
authors.lastname: Hashimoto
authors.forename: Masaki
authors.initials: M
authors.lastname: Suemura
authors.forename: Yukihiko
authors.initials: Y
authors.lastname: Saeki
authors.forename: Ichiro
authors.initials: I
authors.lastname: Kawase
authors.forename: Toshio
authors.initials: T
authors.lastname: Tanaka
mesh_terms: D000799:Angioedema / Q000097:blood / Q000188:drug therapy*; D001323:Autoantibodies / Q000097:blood; D001327:Autoimmune Diseases / Q000097:blood / Q000188:drug therapy*; D003174:Complement C1 Inactivator Proteins / Q000172:deficiency* / Q000276:immunology; D003613:Danazol / Q000627:therapeutic use*; D004965:Estrogen Antagonists / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome
chemical_list: D001323:Autoantibodies; D003174:Complement C1 Inactivator Proteins; D004965:Estrogen Antagonists; D003613:Danazol