Early life exposure to bisphenol A investigated in mouse models of airway allergy, food allergy and oral tolerance

UC Nygaard, NE Vinje, M Samuelsen… - Food and Chemical …, 2015 - Elsevier
UC Nygaard, NE Vinje, M Samuelsen, M Andreassen, EC Groeng, AK Bølling, R Becher
Food and Chemical Toxicology, 2015Elsevier
The impact of early life exposure to bisphenol A (BPA) through drinking water was
investigated in mouse models of respiratory allergy, food allergy and oral tolerance. Balb/c
mice were exposed to BPA (0, 10 or 100 μg/ml), and the offspring were intranasally exposed
to the allergen ovalbumin (OVA). C3H/HeJ offspring were sensitized with the food allergen
lupin by intragastric gavage, after exposure to BPA (0, 1, 10 or 100 μg/ml). In separate
offspring, oral tolerance was induced by gavage of 5 mg lupin one week before entering the …
Abstract
The impact of early life exposure to bisphenol A (BPA) through drinking water was investigated in mouse models of respiratory allergy, food allergy and oral tolerance. Balb/c mice were exposed to BPA (0, 10 or 100 μg/ml), and the offspring were intranasally exposed to the allergen ovalbumin (OVA). C3H/HeJ offspring were sensitized with the food allergen lupin by intragastric gavage, after exposure to BPA (0, 1, 10 or 100 μg/ml). In separate offspring, oral tolerance was induced by gavage of 5 mg lupin one week before entering the protocol for the food allergy induction. In the airway allergy model, BPA (100 μg/ml) caused increased eosinophil numbers in bronchoalveolar lavage fluid (BALF) and a trend of increased OVA-specific IgE levels. In the food allergy and tolerance models, BPA did not alter the clinical anaphylaxis or antibody responses, but induced alterations in splenocyte cytokines and decreased mouse mast cell protease (MMCP)-1 serum levels. In conclusion, early life exposure to BPA through drinking water modestly augmented allergic responses in a mouse model of airway allergy only at high doses, and not in mouse models for food allergy and tolerance. Thus, our data do not support that BPA promotes allergy development at exposure levels relevant for humans.
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