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Cited by 317

The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.

Evidence of Airway Inflammation and Remodeling in Ski Athletes with and without Bronchial Hyperresponsiveness to Methacholine

KARJALAINEN, EEVA-MAIJA, LAITINEN, ANNIKA, SUE-CHU, MALCOLM, ALTRAJA, ALAN, BJERMER, LEIF, LAITINEN, LAURI A.·2000·American Journal of Respiratory and Critical Care Medicine

Abstract

Asthma-like symptoms, methacholine hyperresponsiveness, and use of asthma medication are prevalent in elite cross-country skiers. We quantitated mucosal inflammatory cell infiltration and tenascin expression in the subepithelial basement membrane in endobronchial biopsy specimens of the proximal airways from 40 elite, competitive skiers (mean: 17.5; range: 16 to 20 yr) without a diagnosis of asthma, in 12 subjects with mild asthma, and in 12 healthy controls, through immunohistochemistry and indirect immunofluorescence, respectively. All of the subjects were nonsmokers. T-lymphocyte, macrophage, and eosinophil counts were, respectively, greater by 43-fold (p < 0.001), 26-fold (p < 0.001), and twofold (p < 0.001) in skiers, and by 70-fold (p < 0.001), 63-fold (p < 0.001), and eightfold (p < 0.001) in asthmatic subjects than in controls. In skiers, neutrophil counts were more than twofold greater than in asthmatic subjects, and mast cell counts were not significantly different than in controls. Tenascin expression (as measured through the thickness of the tenascin-specific immunoreactivity band in the basement membrane) was increased in skiers (median: 6.7 microm; interquartile range [IQR]: 5.3 to 8.5 microm, p < 0.001) and asthmatic subjects (mean: 8.8 microm; IQR: 7.2 to 10.8 microm, p < 0. 001) compared with controls (mean: 0.8 microm; IQR: 0 to 3.1 microm) and did not correlate with inflammatory cell counts. Inflammatory changes were present irrespective of asthmalike symptoms, hyperresponsiveness, or atopy. Prolonged repeated exposure of the airways to inadequately conditioned air may induce inflammation and remodeling in competitive skiers.

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Metadata

Authors
KARJALAINEN, E.-M., LAITINEN, A., SUE-CHU, M., ALTRAJA, A., BJERMER, L., & LAITINEN, L. A.
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2000-06-01
Volume
161
Issue
6
Pages
2086-2091
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W2044754321
Cited by
317
References
20
FWCI
7.56
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Evidence of Airway Inflammation and Remodeling in Ski Athletes with and without Bronchial Hyperresponsiveness to Methacholine. https://app.cochat.ai/papers/10.1164/ajrccm.161.6.9907025
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KARJALAINEN, E.-M., LAITINEN, A., SUE-CHU, M., ALTRAJA, A., BJERMER, L., & LAITINEN, L. A. (2000). Evidence of Airway Inflammation and Remodeling in Ski Athletes with and without Bronchial Hyperresponsiveness to Methacholine. American Journal of Respiratory and Critical Care Medicine. https://doi.org/10.1164/ajrccm.161.6.9907025

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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