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Cow's milk protein allergy — Results of skin-prick test with purified milk proteins

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Summary

The diagnosis of milk-protein allergies is difficult. Therefore, the main cow's milk proteins (α-lactalbumin, β-lactoglobulin A + B, αs-casein, β-casein, κ-casein), purified to the highest available standards, were used for differential diagnosis of allergic individuals by applying skin-prick test. In the case of adults with uncertain medical history, milk proteins rarely caused skin reactions, while distinct skin reactions were observed in 11 of 13 children with strongly suspected milk-protein allergy. In the presented study α-lactalbumin and β-lactoglobulin B were the main allergens, because skin reactions to these proteins were provoked with highest prevalence and intensity. Intensity and prevalence of reactions to α- and κ-casein were significantly less. In two cases skin reactions to α-lactalbumin were observed exclusively.

Zusammenfassung

Die Diagnose von Milchproteinallergien ist schwierig. Aus diesem Grunde wurden hochgereinigte Hauptproteine der Kuhmilch (α-Lactalbumin, β-Lactoglobulin A + B, αs-Casein, β-Casein, κ-Casein) unter Anwendung des Hautpricktestes für die Differentialdiagnose bei Allergikern eingesetzt. Hierbei zeigte sich, daß Milchproteine bei Erwachsenen mit unklarer Anamnese nur selten Hautreaktionen auslösten, während bei 11 von 13 Kindern mit starkem Verdacht auf Milchproteinallergie deutliche Hautreaktionen beobachtet wurden. In der vorliegenden Untersuchung waren α-Lactalbumin und β-Lactoglobulin die Hauptallergene, weil sie mit höchster Prävalenz und Intensität Hautreaktionen auslösten. Reaktionen auf α- und κ-Casein erfolgten mit deutlich geringerer Häufigkeit und Intensität. In zwei Fällen wurde eine ausschließliche Reaktion auf α-Lactalbumin beobachtet.

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Abbreviations

PNU:

protein nitrogen unit

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Kaiser, C., Reibisch, H., Fölster-Holst, R. et al. Cow's milk protein allergy — Results of skin-prick test with purified milk proteins. Z Ernährungswiss 29, 122–128 (1990). https://doi.org/10.1007/BF02021667

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