Cited by 323Asthma and respiratory diseasesAllergic Rhinitis and SensitizationOccupational exposure and asthma

Inflammation and Structural Changes in the Airways of Patients with Atopic and Nonatopic Asthma

AMIN, KAWA, LÚDVÍKSDÓTTIR, DÓRA, JANSON, CHRISTER, NETTELBLADT, OTTO, BJÖRNSSON, EYTHÓR, ROOMANS, GODFRIED M., BOMAN, GUNNAR, SEVÉUS, LAHJA +1 more·2000·American Journal of Respiratory and Critical Care Medicine

Abstract

The aim of the present study was to compare the cellular pattern and structural changes in the airway walls of atopic and nonatopic patients with asthma. Bronchial biopsy specimens were obtained from 13 atopic subjects with asthma, nine nonatopic patients with asthma, and seven healthy control subjects and investigated using immunohistochemical methods. The number of eosinophils increased in both asthma groups, but significantly more in the atopic group. The number of mast cells increased similarly in the two asthma groups, whereas the number of neutrophils increased only in the nonatopic asthma group. The number of T-lymphocytes (CD3–, CD4–, CD8–, CD–25-positive cells) was higher in patients with atopic asthma compared with nonatopic asthma. Interleukin-4 (IL-4) and IL-5-positive cells were more frequently found in the atopic asthma group, whereas cells staining for IL-8 were more frequent in the nonatopic group. The degree of epithelial damage was significantly higher in the atopic asthma group compared with the control subjects and the nonatopic asthmatics. The tenascin and laminin layer was significantly thicker in the atopic group compared with the group of nonatopic asthmatics. In the atopic group, there was a significant negative correlation between epithelial integrity (defined as the relative length of intact epithelium) and the eosinophil count and also between the number of CD25-positive cells and epithelial integrity. The number of mast cells correlated positively with the thickness of tenascin- and laminin-positive layers. In conclusion, we provide evidence of different patterns of involvement of inflammatory cells in atopic and nonatopic patients with asthma. There were also structural differences in the bronchial mucous membrane between atopic asthma and nonatopic asthma. This suggests that there are differences in the extent of the immunopathologic response of these clinically distinct forms of asthma.

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Crossref · 10.1164/ajrccm.162.6.9912001

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  • Studies of asthmatic patients have shown a correlation between the number of inflammatory cells in the airways and the degree of epithelial barrier disruption.

    “In support of this notion, studies of asthmatic patients have shown a correlation between the number of inflammatory cells in the airways and the degree of epithelial barrier disruption (7).”

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Authors
AMIN, K., LÚDVÍKSDÓTTIR, D., JANSON, C., NETTELBLADT, O., BJÖRNSSON, E., ROOMANS, G. M., BOMAN, G., SEVÉUS, L., & VENGE, P.
Affiliations
  • Uppsala University (SE)
  • Section of Human Anatomy, Department of Medical Cell Biology, Section of Respiratory Medicine and Allergology, Laboratory for Inflammation Research, Department of Medical Sciences, Asthma Research Center, University of Uppsala; and Pharmacia and Upjohn Diagnostics AB, Uppsala, Sweden
Corresponding author
VENGE, PER
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2000-12-01
Volume
162
Issue
6
Pages
2295-2301
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W1974371579
Cited by
323
References
33
Citations by year
2026: 1 · 2025: 5 · 2024: 1 · 2023: 5 · 2022: 8 · 2021: 9 · 2020: 6 · 2019: 8 · 2018: 12 · 2017: 9 · 2016: 11 · 2015: 9 · 2014: 17 · 2013: 8 · 2012: 12
FWCI
10.51
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Respiratory and Critical Care Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Health Sciences › Medicine › Immunology and Allergy › Allergic Rhinitis and Sensitization
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Occupational exposure and asthma
Keywords
allergic asthma, non-allergic asthma, airway inflammation, bronchial biopsy, eosinophils, mast cells, neutrophils, T cells, IL-4, IL-5, interleukin-8, epithelial damage, tenascin, laminin, bronchial mucosa
MeSH terms
Adolescent, Adult, Asthma, Biopsy, Bronchi, Bronchitis, Female, Humans, Hypersensitivity, Immediate, Immunohistochemistry, Male, Middle Aged, Surveys and Questionnaires, Cytokines, Bronchial Hyperreactivity, Statistics, Nonparametric

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