title: Maternal Transfer of Bisphenol A During Nursing Causes Sperm Impairment in Male Offspring.
abstract: The health effects of environmental chemicals on animals and humans are of growing concern. Human epidemiological and animal study data indicate that reproductive disorders and diseases begin early during prenatal and postnatal development. An increase of human male reproductive disturbance in the past several decades was associated to chemicals called endocrine disruptors (ED). Bisphenol A (BPA) is a ubiquitous organic environmental contaminant with ED activity. This study verified the effect of BPA exposure via breast milk during the lactation (early postnatal) period in male mice. Dams were exposed to oral BPA (300, 900, and 3000 µg/kg/BW/day) during the breastfeeding period (21 days). BPA at all concentrations significantly impaired sperm parameters in adult mice (8 months old), but mitochondrial functionality was more affected at BPA 3000. The acrosome membrane parameter was affected by BPA concentrations from 900 to 3000, and DNA integrity showed pronounced impairment at BPA 900 and 3000. BPA 3000 treatment also induced testicular degeneration and complete aplasia in some seminiferous tubules. Testicular oxidative damage was observed, and the total antioxidant capacity was impaired in BPA 900 and 3000 treatment groups. Taken together, the present study demonstrated long-term adverse effects of BPA in male mice, including reduced sperm quality, antioxidant capacity, and changes in testicular tissue. Our results clearly demonstrate the danger of BPA transferred via lactation on sperm quality registered even after a long time-elapsed from exposure to this harmful chemical.
authors.affiliation: Programa de Pós-Graduação em Ciências Fisiológicas: Fisiologia Animal Comparada, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.
authors.forename: Ana Cristina
authors.initials: AC
authors.lastname: Kalb
authors.affiliation: Programa de Pós-Graduação em Ciências Fisiológicas: Fisiologia Animal Comparada, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.
authors.forename: Ana Luiza
authors.initials: AL
authors.lastname: Kalb
authors.affiliation: RAC - Reprodução Animal Comparada -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.|Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
authors.forename: Tainã Figueiredo
authors.initials: TF
authors.lastname: Cardoso
authors.affiliation: Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
authors.forename: Cristina Gevehr
authors.initials: CG
authors.lastname: Fernandes
authors.affiliation: RAC - Reprodução Animal Comparada -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.|Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
authors.forename: Carine Dahl
authors.initials: CD
authors.lastname: Corcini
authors.affiliation: RAC - Reprodução Animal Comparada -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.
authors.forename: Antonio Sergio
authors.initials: AS
authors.lastname: Varela Junior
authors.affiliation: Programa de Pós-Graduação em Ciências Fisiológicas: Fisiologia Animal Comparada, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil. pablomartinez@furg.br.|RAC - Reprodução Animal Comparada -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil. pablomartinez@furg.br.
authors.forename: Pablo Elías
authors.identifier: http://orcid.org/0000-0003-1585-6162
authors.initials: PE
authors.lastname: Martínez
mesh_terms: D000818:Animals; D001559:Benzhydryl Compounds / Q000633:toxicity*; D052244:Endocrine Disruptors / Q000633:toxicity*; D005260:Female; D006801:Humans; D008297:Male; D018811:Maternal Exposure; D008431:Maternal-Fetal Exchange; D051379:Mice; D010636:Phenols / Q000633:toxicity*; D011247:Pregnancy; D013094:Spermatozoa / Q000187:drug effects*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors; D010636:Phenols; C006780:bisphenol A; D000098826:Bisphenol A Compounds