Document Detail


Effects of allergen immunotherapy on the nasal mucosa in patients with allergic rhinitis.
MedLine Citation:
PMID:  10780794     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Despite the varied immunological changes occurring after allergen immunotherapy, the precise mechanism, or the mechanisms responsible for clinical effectiveness of allergen immunotherapy have not been clearly determined. Postulated immunomodulatory mechanisms include a decrease in cellular responsiveness, a production of blocking antibodies, a reduction in the number of mast cells, and activation of T-cell suppressor mechanisms. Nineteen allergic rhinitis patients (study group) with house dust mite sensitivity and 10 nonallergic control subjects were studied. In the study group, the nasal mucosal biopsies were obtained prior to immunotherapy and were repeated after 1 year, and specimens were evaluated by light and electron microscopy. After the third month of immunotherapy, nasal symptom scores were reduced significantly and disappeared in the sixth month (p <0.01). No significant changes were observed in the levels of immunoglobulins, IgG subclasses and complement levels (p <0.05), except IgG4/IgG1 ratio (p <0.05). A comparison of histopathological findings of nasal mucosa in each case revealed an improvement in epithelial loss, inflammation, thickening of basal membrane and fibrosis (p <0.05). A significant correlation was observed between epithelial loss and mast cell accumulation with symptom score (p <0.001). These results suggest that the improvement of nasal epithelial cells and reduction of mast cell accumulation in nasal mucosa may be one of the mechanisms that could explain the improvement of nasal allergy symptoms following immunotherapy.
Authors:
F Erel; M Karaayvaz; A Z Caliskaner; M Gerek; M Demiriz; A Kubar; N Ozangüç
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of investigational allergology & clinical immunology     Volume:  10     ISSN:  1018-9068     ISO Abbreviation:  J Investig Allergol Clin Immunol     Publication Date:    2000 Jan-Feb
Date Detail:
Created Date:  2000-06-26     Completed Date:  2000-06-26     Revised Date:  2013-07-31    
Medline Journal Info:
Nlm Unique ID:  9107858     Medline TA:  J Investig Allergol Clin Immunol     Country:  SPAIN    
Other Details:
Languages:  eng     Pagination:  14-9     Citation Subset:  IM    
Affiliation:
Department of Allergy, Gülhane Military Medical Academy, Ankara, Turkey.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Allergens / immunology*,  therapeutic use
Animals
Female
Humans
Immunotherapy / methods
Male
Mast Cells / cytology,  immunology
Mites / immunology*
Nasal Mucosa / immunology*,  pathology
Rhinitis, Allergic, Perennial / immunology,  pathology,  therapy*
Treatment Outcome
Chemical
Reg. No./Substance:
0/Allergens

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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