title: Allergenicity of acid protease secreted by Candida albicans.
abstract: We have previously reported the cases of Candida albicans (C. alb) acid protease (CAAP)-induced atopic asthma. In this study, the allergenicity of the released enzyme CAAP was examined among asthmatic patients with positive immediate skin response to crude C. alb antigen. Among 49 patients with positive skin response to crude C. alb, anti-crude C. alb IgE antibodies were detected in 40 and anti-CAAP IgE antibodies were detected in 18. Moreover, anticrude C. alb IgE antibodies were detected in all of the patients in whom anti-CAAP IgE antibodies were detected. No correlations between IgG antibodies to both antigens or between IgE and IgG antibodies to CAAP were observed. CAAP induced significant T-cell proliferation in 20/28 patients showing positive T-cell proliferation response to crude C. alb antigen. Most of the patients showing positive conjunctival response to crude C. alb antigen also showed positive response to CAAP. Most of the patients showing high levels of serum IgE antibody and positive histamine-release response of peripheral blood leukocytes to CAAP showed positive conjunctival response. The results indicate that CAAP is an important allergen in C. alb-related mucosal allergy.
authors.affiliation: National Sagamihara Hospital, Kanagawa, Teikyo University, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Akiyama
authors.forename: T
authors.initials: T
authors.lastname: Shida
authors.forename: H
authors.initials: H
authors.lastname: Yasueda
authors.forename: H
authors.initials: H
authors.lastname: Mita
authors.forename: Y
authors.initials: Y
authors.lastname: Yanagihara
authors.forename: M
authors.initials: M
authors.lastname: Hasegawa
authors.forename: Y
authors.initials: Y
authors.lastname: Maeda
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.forename: K
authors.initials: K
authors.lastname: Takesako
authors.forename: H
authors.initials: H
authors.lastname: Yamaguchi
mesh_terms: D000485:Allergens / Q000096:biosynthesis / Q000276:immunology*; D000908:Antibodies, Fungal; D000918:Antibody Specificity; D001249:Asthma / Q000201:enzymology / Q000276:immunology / Q000382:microbiology; D002176:Candida albicans / Q000201:enzymology* / Q000276:immunology* / Q000378:metabolism; D003233:Conjunctivitis, Allergic / Q000139:chemically induced; D010450:Endopeptidases / Q000276:immunology* / Q000378:metabolism; D005656:Fungal Proteins / Q000276:immunology* / Q000378:metabolism; D006636:Histamine Release / Q000187:drug effects; D006801:Humans; D007073:Immunoglobulin E / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000485:Allergens; D000908:Antibodies, Fungal; D005656:Fungal Proteins; D007074:Immunoglobulin G; D007073:Immunoglobulin E; D010450:Endopeptidases; C062596:Candida albicans producing proteinase