title: The effects of maternal exposure to bisphenol A on allergic lung inflammation into adulthood.
abstract: Bisphenol A (BPA) is a high-production volume chemical  classified as an environmental estrogen and used primarily in the plastics industry. BPA's increased usage correlates with rising BPA levels in people and a corresponding increase in the incidence of asthma. Due to limited studies, the contribution of maternal BPA exposure to allergic asthma pathogenesis is unclear. Using two established mouse models of allergic asthma, we examined whether developmental exposure to BPA alters hallmarks of allergic lung inflammation in adult offspring. Pregnant C57BL/6 dams were gavaged with 0, 0.5, 5, 50, or 500 μg BPA/kg/day from gestational day 6 until postnatal day 21. To induce allergic inflammation, adult offspring were mucosally sensitized with inhaled ovalbumin containing low-dose lipopolysaccharide or ip sensitized using ovalbumin with alum followed by ovalbumin aerosol challenge. In the mucosal sensitization model, female offspring that were maternally exposed to ≥ 50 μg BPA/kg/day displayed enhanced airway lymphocytic and lung inflammation, compared with offspring of control dams. Peritoneally sensitized, female offspring exposed to ≤ 50 μg BPA/kg/day presented dampened lung eosinophilia, compared with vehicle controls. Male offspring did not exhibit these differences in either sensitization model. Our data demonstrate that maternal exposure to BPA has subtle and qualitatively different effects on allergic inflammation, which are critically dependent upon route of allergen sensitization and sex. However, these subtle, yet persistent changes due to developmental exposure to BPA did not lead to significant differences in overall airway responsiveness, suggesting that early life exposure to BPA does not exacerbate allergic inflammation into adulthood.
authors: Department of Environmental Medicine, Universityof Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA.
authors: Stephen M
authors: SM
authors: Bauer
authors: Anirban
authors: A
authors: Roy
authors: Jason
authors: J
authors: Emo
authors: Timothy J
authors: TJ
authors: Chapman
authors: Steve N
authors: SN
authors: Georas
authors: B Paige
authors: BP
authors: Lawrence
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001249:Asthma / Q000139:chemically induced* / Q000276:immunology / Q000473:pathology; D001559:Benzhydryl Compounds / Q000276:immunology / Q000633:toxicity*; D016535:Bronchial Hyperreactivity / Q000139:chemically induced* / Q000276:immunology / Q000473:pathology; D004785:Environmental Pollutants / Q000276:immunology / Q000633:toxicity*; D005260:Female; D008214:Lymphocytes / Q000187:drug effects / Q000473:pathology; D008297:Male; D018811:Maternal Exposure; D051379:Mice; D008810:Mice, Inbred C57BL; D010047:Ovalbumin / Q000009:adverse effects / Q000276:immunology; D010636:Phenols / Q000276:immunology / Q000633:toxicity*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects / Q000139:chemically induced* / Q000276:immunology; D012737:Sex Factors; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D004785:Environmental Pollutants; D010047:Ovalbumin; D010636:Phenols; C006780:bisphenol A; D000098826:Bisphenol A Compounds