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The Effect of Inhaled Heparin on Airway Responsiveness to Histamine and Leukotriene D4

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Inhaled heparin has been shown to reduce the early and late phase of asthmatic reactions and suppress an allergen-induced increase in bronchial hyperreactivity. The mechanism involved in the control of bronchial hyperreactivity in asthma by heparin is still not understood. The purpose of this study was to investigate the effect of inhaled heparin on the airway response to histamine and leukotriene D4. Children with a typical history of mild allergic asthma participated in this randomized, double-blind, placebo-controlled cross-over study. Subjects underwent provocation challenge tests with histamine or leukotriene D4 before and after inhalation of heparin and placebo. Twenty-three patients completed the study. We showed that placebo did not affect the bronchial hyperreactivity to histamine or leukotriene. A single dose of inhaled heparin significantly decreased bronchial hyperreactivity to histamine and leukotriene in children with mild asthma. Results of our study suggest that inhaled heparin, because of its antiallergic and/or anti-inflammatory properties, modifies airway hyperresponsiveness in children with allergic asthma.
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Document Type: Original Article

Publication date: 01 January 2003

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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