Histamine sensitivity influences reactivity to allergens.
The ability to mount an IgE response to allergens is a prerequisite for the development of positive allergen skin tests, and this is reflected to some extent by the observation that allergen-responsive subjects tend to have higher total serum IgE concentrations. To determine whether histamine sensitivity also contributes to allergen responsiveness, 893 subjects in a rural community were prick tested with 14 allergens and tenfold dilutions of histamine phosphate beginning at 1 mg/ml-1. IgE was measured in a subset of 400 subjects. Three-way contingency table analysis confirmed previous reports of an association between allergen responsiveness and IgE (p less than 0.001) and also demonstrated that allergen responsiveness is associated with sensitivity to histamine (p less than 0.001). This association is independent of IgE so that the additive effect of IgE and histamine sensitivity allows more nearly accurate prediction of allergen responsiveness than either measurement alone.[1]References
- Histamine sensitivity influences reactivity to allergens. Stuckey, M.S., Witt, C.S., Schmitt, L.H., Warlow, R., Lattimore, M., Dawkins, R.L. J. Allergy Clin. Immunol. (1985) [Pubmed]
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