Occupational Asthma Reference

van Kampen V, de Blay F, Folletti I, Kobierski P, Moscato G, Olivieri M, Quirce S, Sastre J, Walusiak-Skorupa J, Kotschy-Lang N, Müsken H, Mahler V, Schliemann S, Ochmann U, Sültz J, Worm M, Sander I, Zahradnik E, Brüning T, Merget R, Raulf-Heimsoth M, Evaluation of commercial skin prick test solutions for selected occupational allergens, Allergy, 2013;68:651-658,
(Plain text: van Kampen V, de Blay F, Folletti I, Kobierski P, Moscato G, Olivieri M, Quirce S, Sastre J, Walusiak-Skorupa J, Kotschy-Lang N, Musken H, Mahler V, Schliemann S, Ochmann U, Sultz J, Worm M, Sander I, Zahradnik E, Bruning T, Merget R, Raulf-Heimsoth M, Evaluation of commercial skin prick test solutions for selected occupational allergens, Allergy)

Keywords: EAACI, skin prick test, baker, latex, cow, storage mites,

Known Authors

Frederic de Blay, Hopital Universitaires de Strasbourg Frederic de Blay

Joaquin Sastre, Fundacion Jimenez Diaz, Madrid Joaquin Sastre

Rolf Merget, Bochum Rolf Merget

Giana Moscato, Fondazione Salvatore Maugeri, Pavia Giana Moscato

Santiago Quirce, Madrid Santiago Quirce

Ilenia Folletti, Perugia Ilenia Folletti

Jolanta Walusiak, Lodz Jolanta Walusiak

Monika Raulf-Heimsoth, Bochum Monika Raulf-Heimsoth

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Abstract

Background
Skin prick testing (SPT) is an important step in the diagnosis of IgE-mediated occupational allergic diseases. The outcome of SPT is related to the quality of allergen extracts. Thus, the aim of the study was to assess different commercially available SPT solutions for selected occupational allergens.

Methods
SPT was performed in 116 bakers, 47 farmers and 33 subjects exposed to natural rubber latex (NRL), all with work-related allergic symptoms. The SPT solutions from different manufacturers (n = 3–5) for wheat flour, rye flour, soy, cow hair/dander, storage mites (Tyrophagus putrescentiae, Lepidoglyphus destructor, Acarus siro) and NRL were analysed with respect to their protein and antigen contents. SPT was carried out in 16 allergy centres in six European countries using standardized procedures. Specific IgE values were used as the gold standard to calculate the sensitivity and specificity of SPT solutions. The optimal cut-point for each SPT solution was determined by Youden Index.

Results
Protein and antigen contents and patterns of the SPT solutions varied remarkably depending on the manufacturer. While SPT solutions for wheat flour and soy reached overall low sensitivities, sensitivities of other tested SPT solutions depended on the manufacturer. As a rule, solutions with higher protein and antigen content showed higher sensitivities and test efficiencies.

Conclusions
There is a wide variability of SPT solutions for occupational allergens, and the sensitivity of several solutions is low. Thus, improvement and standardization of SPT solutions for occupational allergens is essential.

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