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Bonefeld, Charlotte Menné; Nielsen, Morten Milek; Rubin, Ingrid Maria Cecilia; Vennegaard, Marie Torp; Dabelsteen, Sally; Gimenéz-Arnau, Elena; Lepoittevin, Jean-Pierre; Geisler, Carsten; Johansen, Jeanne Duus
Contact dermatitis, December 2011, Letnik: 65, Številka: 6Journal Article
Background. Perfumes are complex mixtures composed of many fragrance ingredients, many of which are known to be only weak allergens when tested individually. It is therefore surprising that fragrance contact allergy is one of the most common forms of contact allergy. Objectives. To investigate whether mixing different fragrance allergens leads to increased sensitization potency, and to examine the difference in the challenge response to one chemical in mice sensitized either with the mixture of allergens or with only the relevant allergen. Methods. CBA mice were sensitized with three different concentrations of three fragrance allergens alone or as a mixture. The sensitization and elicitation responses were measured by ear thickness plus infiltration of B and T cells and T cell proliferation in the draining lymph nodes. Results. We found a dose‐dependent sensitization response for each of the allergens. An increased response was seen when the allergens were mixed. A stronger challenge response to cinnamal was seen in mice sensitized with the allergen mixture than in mice sensitized with cinnamal alone. Conclusions. Our findings suggest that mixtures of allergens increase the primary response that potentiates the generation of memory T cells in response to the specific allergen. Thus, allergen mixtures enhance both induction and elicitation of contact allergy.
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