title: Immunohistology of the nasal mucosa following allergen-induced rhinitis. Identification of activated T lymphocytes, eosinophils, and neutrophils.
abstract: We have studied the immunohistology of the nasal mucosa in allergen-induced rhinitis. Sixteen grass pollen-sensitive patients were challenged twice by randomly allocated allergen or control solutions applied on filter paper disks to the inferior turbinate. All had immediate nasal responses, but late-phase responses were equivocal and only evident as nostril blockage. When cell counts in the nasal submucosa were compared with control values 24 h after allergen, there were no changes in CD45+ (total leukocytes), CD3+, or CD8+ cells. Significant increases were found in the numbers of CD4+ T-helper cells (p less than 0.05) and CD25+ [interleukin-2 receptor (IL-2R+)] cells (p less than 0.02). Increases in eosinophils (anti-major basic protein, p less than 0.01) and neutrophils (antineutrophil elastase, p less than 0.01) were also observed. There were increases in tissue macrophages and HLA-DR-positive immunostaining and a reduction in mast cells (tryptase positive), but none of these changes was statistically significant. No significant changes in epithelial thickness, cross-sectional area, or integrity were observed. There was a significant correlation between CD4+ and CD25+ cells (r = 0.61, p less than 0.01) but not between macrophages and CD25+ cells (r = 0.18). The changes in the nasal submucosa were not merely a reflection of alterations in circulating cell populations since it was shown that a significant increase in the lymphocyte CD4/CD8 ratio (p less than 0.05) was observed in nasal biopsies but not in peripheral blood after allergen challenge.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Allergy and Clinical Immunology, National Heart and Lung Institute, London, United Kingdom.
authors.forename: V A
authors.initials: VA
authors.lastname: Varney
authors.forename: M R
authors.initials: MR
authors.lastname: Jacobson
authors.forename: R M
authors.initials: RM
authors.lastname: Sudderick
authors.forename: D S
authors.initials: DS
authors.lastname: Robinson
authors.forename: A M
authors.initials: AM
authors.lastname: Irani
authors.forename: L B
authors.initials: LB
authors.lastname: Schwartz
authors.forename: I S
authors.initials: IS
authors.lastname: Mackay
authors.forename: A B
authors.initials: AB
authors.lastname: Kay
authors.forename: S R
authors.initials: SR
authors.lastname: Durham
mesh_terms: D000328:Adult; D001706:Biopsy; D001772:Blood Cell Count; D002452:Cell Count; D004804:Eosinophils / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D005260:Female; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D008213:Lymphocyte Activation; D016131:Lymphocyte Subsets; D008297:Male; D008407:Mast Cells / Q000473:pathology; D008875:Middle Aged; D009297:Nasal Mucosa / Q000276:immunology* / Q000473:pathology; D009299:Nasal Provocation Tests; D009504:Neutrophils / Q000473:pathology*; D006255:Rhinitis, Allergic, Seasonal / Q000097:blood / Q000276:immunology* / Q000473:pathology; D013601:T-Lymphocytes / Q000276:immunology / Q000473:pathology*
chemical_list: D006684:HLA-DR Antigens