Isolation and characterization of a relevant aspergillus fumigatus antigen with igg and ige-binding activity

Viswanath P. Kurup*, Muthiah Ramasamy, Paul A. Greenberger, Jordan N. Fink

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

An immunoiogically relevant antigen fraction was isolated from a cytoplasmic extract of Aspergillus fumigatus mycelium. The fraction was obtained by concanavalin-A affinity chromatography and hydrophobic interaction chromatography. Two protein bands were discernible in polyacrylamide gel electrophoresis while two precipitin peaks were detected in crossed immunoelectrophoresis. When tested against sera from patients with Aspergillus-induced diseases, the fraction showed both IgG and IgE antibody-binding activity. All of the sera studied from patients with allergic bronchopulmonary aspergillosis (ABPA) showed high IgG and IgE antibody titers, while sera from patients with aspergilloma and cystic fibrosis with ABPA demonstrated high IgG titers and only a moderate increase in IgE titers. None of the other groups showed any significant antibody titers against this antigen in their sera. Because of its binding to both IgG and IgE antibodies this fraction was found to be useful in the immunodiagnosis of Aspergillus-induced diseases.

Original languageEnglish (US)
Pages (from-to)176-182
Number of pages7
JournalInternational archives of allergy and immunology
Volume86
Issue number2
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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