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Additional Properties of Cetirizine, a New H1 Antagonist

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Cetirizine, an H1 antihistamine, has properties in addition to H1 blockade that may be useful in the treatment of seasonal rhinitis and urticaria. For example, cetirizine has been shown to block the influx of eosinophils into the site of antigen-stimulated skin blisters. Studies with other antihistamines suggest that this is not a universal property of this type of drug. Pretreatment with cetirizine also has been found to block the augmented sensitivity to methacholine that occurs 24 hours after antigen provocation of the nasal mucosa. This reduction takes place despite the absence of an effect on eosinophil influx into this area, and suggests another action of cetirizine. Our study of allergic rhinitis patients examined the effect of cetirizine on early response to nasal challenge with antigen. Cetirizine, although it did not block the release into nasal secretions of histamine, significantly reduced sneezing and decreased levels of albumin and TAME-esterase activity, which are indicators of vascular permeability. Cetirizine also blocked the generation of leukotriene C4. In vitro studies have shown that cetirizine does not block the release of leukotriene from anti-lgE stimulated mast cells, raising the possibility that cells in the nasal mucosa in addition to mast cells generate leukotrienes.
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Document Type: Research Article

Publication date: May 1, 1991

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 and by having the potential to directly impact the quality of patient care. AAP welcomes the submission of original works including peer-reviewed original research and clinical trial results. Additionally, as the official journal of the Eastern Allergy Conference (EAC), AAP will publish content from EAC poster sessions as well as review articles derived from EAC lectures.

    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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