Systemic responses after bronchial aspirin challenge in sensitive patients with asthma

The Journal of Allergy and Clinical Immunology
Joanna S MakowskaM L Kowalski

Abstract

In aspirin-sensitive patients with asthma, bronchial obstruction induced by oral aspirin may be associated with extrabronchial symptoms, suggesting the systemic character of the response. Go assess potential systemic effects of local aspirin challenge, hemopoietic progenitors were measured in the peripheral blood of challenged patients. In 19 patients with a history of aspirin-induced asthma, placebo-controlled bronchial challenges with lysine-aspirin were performed. Peripheral blood was collected before and then 1 hour and 20 hours after challenge (placebo or aspirin). Using the flow-cytometric method, the numbers of leukocyte (CD34+ cells) and eosinophil (CD34+CD125+ cells) progenitors were determined. The challenge was positive in 13 patients; 6 patients had isolated local bronchial reaction, and 7 patients developed systemic symptoms (bronchial and extrabronchial). In patients with positive challenge (n = 13), leukocyte progenitors increased significantly at 1 hour and 20 hours after challenge (mean, 0.04% at baseline, 0.066% at 1 hour after challenge, and 0.073% at 20 hours; P < .05). Eosinophil progenitors raised significantly from mean 0.017% before challenge to 0.04% (P < .05) at 20 hours after the challenge. At 20 hour...Continue Reading

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Oct 23, 2008·Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology·Joanna S MakowskaM L Kowalski
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