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Table of Contents
Vol. 158, No. 3, 2012
Issue release date: June 2012
Section title: Original Paper
Int Arch Allergy Immunol 2012;158:276–280
(DOI:10.1159/000331315)

Baseline Serum Tryptase Levels and Adverse Reactions to Injection Specific Immunotherapy with Airborne Allergens: Is There a Relationship?

Asero R.a · Farioli L.b · Pastorello E.A.b
aAmbulatorio di Allergologia, Clinica San Carlo, Paderno Dugnano, e bDipartimento di Allergologia e Immunologia, Ospedale Niguarda Cà Granda, Milano, Italia

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: April 13, 2011
Accepted: July 29, 2011
Published online: March 02, 2012
Issue release date: June 2012

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 1

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: http://www.karger.com/IAA

Abstract

Background: Elevated baseline serum tryptase levels are associated with severe systemic reactions following hymenoptera stings or venom immunotherapy. Little is known about baseline tryptase levels in patients with respiratory allergy and whether a relationship exists with systemic reactions induced by injection specific immunotherapy (SIT) with airborne allergens. The objective of this study was to measure tryptase levels in subjects with respiratory allergy and analyze the results in the light of tolerance/intolerance to injection SIT. Methods: Baseline serum tryptase levels were measured in 106 adults allergic to different airborne allergens and in 40 normal controls. Thirty-one patients underwent injection SIT, and 15 of these 31 experienced at least one SIT-induced systemic reaction. Results: Patients and normal controls showed similar median tryptase levels (2.98 vs. 3.13 ng/ml, respectively), although these were elevated in 6 patients (6%) versus 0 of 40 controls (0%). Tryptase levels did not differ between those patients with or without a history of systemic reactions (median 3.7 vs. 5.91 ng/ml, not significant). Three of 4 patients showing elevated tryptase levels belonged to the SIT-tolerant group. Elevated tryptase levels were not associated with specific allergens nor with distance from the specific pollen season. A bone marrow aspirate performed in the only patient with a history of systemic reactions following injection SIT and tryptase >11.4 ng/ml showed a normal morphology and phenotype. Conclusions: Unlike patients with hymenoptera venom allergy, in patients with respiratory allergy, elevated serum tryptase levels do not represent a risk factor for adverse reactions to SIT.

© 2012 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: April 13, 2011
Accepted: July 29, 2011
Published online: March 02, 2012
Issue release date: June 2012

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 1

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: http://www.karger.com/IAA


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