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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-8267

Tresch, S; Holzmann, D; Baumann, S; Blaser, K; Wüthrich, B; Crameri, R; Schmid-Grendelmeier, P (2003). In vitro and in vivo allergenicity of recombinant Bet v 1 compared to the reactivity of natural birch pollen extract. Clinical and Experimental Allergy, 33(8):1153-1158.

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BACKGROUND : Diagnostic procedures using natural extracts show only limited quantitative correlation between in vivo and in vitro results. Highly pure recombinant allergens might show more predictive findings. OBJECTIVE : The aim of this study was to compare natural birch pollen extract (BPE) and recombinant Betula verrucosa (rBet v 1) for their diagnostic value comparing skin prick tests (SPTS) and nasal provocation tests (NPTS) with specific IgE in the serum. METHODS : Thirty-four patients allergic to birch pollen and five healthy controls were investigated. SPT and NPT were performed with BPE and rBet v 1 at different concentrations. Specific serum IgE was measured by the Pharmacia CAP system. RESULTS : Commercial BPE and rBet v 1 (10 micro g/mL) were able to elicit similar allergenic reactions in vivo and IgE binding in vitro. SPT reflects immediate-type allergy as determined by NPT to a higher degree than specific IgE, for both reagents. To cause allergic reactions in NPT, higher amounts of rBet v 1 were needed than for skin tests and the sensitivity was lower than with BPE. CONCLUSION : rBet v 1 alone is sufficient for a reliable diagnosis of birch pollen allergy in most patients and induces comparable skin test reactivity as BPE, but less allergic reactions in nasal provocations.


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Otorhinolaryngology
Dewey Decimal Classification:610 Medicine & health
Deposited On:26 Mar 2009 10:31
Last Modified:14 Dec 2013 12:22
Publisher DOI:10.1046/j.1365-2222.2003.01717.x
PubMed ID:12911792

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