Pathophysiology and immunology of allergic bronchopulmonary aspergillosis

Allergic bronchopulmonary aspergillosis (ABPA) is a complication of persistent asthma and cystic fibrosis (CF), diseases in part characterized by excessive viscous mucus and compromised mucociliary clearance. Inhaled conidia of Aspergillus fumigatus are able to persist and germinate, releasing exopr...

Full description

Saved in:
Bibliographic Details
Published in:Medical mycology (Oxford) 2005, Vol.43 (S1), p.203-206
Main Author: Moss, R. B.
Format: Article
Language:English
Subjects:
Aspergillosis, Allergic Bronchopulmonary - immunology
Aspergillosis, Allergic Bronchopulmonary - physiopathology
Aspergillus fumigatus
Aspergillus fumigatus - pathogenicity
Asthma - complications
Bronchiectasis - microbiology
Bronchiectasis - physiopathology
Cystic Fibrosis - complications
Humans
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Allergic bronchopulmonary aspergillosis (ABPA) is a complication of persistent asthma and cystic fibrosis (CF), diseases in part characterized by excessive viscous mucus and compromised mucociliary clearance. Inhaled conidia of Aspergillus fumigatus are able to persist and germinate, releasing exoproteases and other fungal products that further compromise clearance, breach the epithelium, and activate immune responses. Chemotactic cytokines (e.g. IL-8, RANTES, eotaxin) in particular have been implicated in murine models. Chemokine-mediated recruitment of CD4 + TH2 lymphocytes specific for A. fumigatus is a crucial feature of ABPA. Susceptibility also appears to involve immunogenetic factors including atopy and defined major histocompatibility complex-restricted allelic expression on antigen-presenting cells that are permissive for a TH2-predominant immune response. Certain A. fumigatus allergens appear more associated with ABPA rather than simple A. fumigatus allergy. ABPA is characterized by marked local and systemic eosinophilia, an adaptive immune response with elevated levels of A. fumigatus-specific IgG, IgA and IgE antibodies, and a profound nonspecific IL-4-dependent elevation in total IgE. Clinically, ABPA manifests with recurring episodes of asthma, pulmonary infiltrates, and central bronchiectasis that may progress to fibrosis. It is treated with systemic glucocorticoids and azoles. Monitoring clinical, radiographic and serologic responses (especially total IgE) is essential for successful management.
ISSN:1369-3786
1460-2709
DOI:10.1080/13693780500052255