Title: High butter-fat diet and bisphenol A additively impair male rat spermatogenesis.
Authors: Tarapore, Pheruza; Hennessy, Max; Song, Dan; Ying, Jun; Ouyang, Bin; Govindarajah, Vinothini; Leung, Yuet-Kin; Ho, Shuk-Mei
Published In Reprod Toxicol, (2017 Mar)
Abstract: Exposure to xenoestrogens is a probable cause of male infertility in humans. Consumption of high-fat diets and exposure to bisphenol A (BPA) is pervasive in America. Here, we test the hypothesis that gestational exposure to high dietary fats and/or BPA disrupt spermatogenesis in adulthood. Sprague-Dawley rats were fed diets containing 10kcal% butter fat (AIN), 39kcal% butter fat (HFB), or 39kcal% olive oil (HFO), with or without BPA (25μg/kg body weight/day) during pregnancy. One group of male offspring received testosterone (T)- and estradiol-17β (E2)-filled implants or sham-implants from postnatal day (PND)70-210. Another group was naturally aged to 18 months. We found that adult males with gestational exposure to BPA, HFB, or HFB+BPA, in both the aged group and the T+E2-implanted group, exhibited impairment of spermatogenesis. In contrast, gestational exposure to HFO or HFO+BPA did not affect spermatogenesis. Sham-implanted, gestational exposed groups also had normal spermatogenesis. Loss of ERα expression in round spermatids and premature expression of protamine-1 in diplotene spermatocytes were features associated with impaired spermatogenesis. Compared with the single-treatment groups, the HFB+BPA group experienced more severe effects, including atrophy.
PubMed ID: 27658648
MeSH Terms: Animals; Benzhydryl Compounds/toxicity*; Butter; Diet, High-Fat/adverse effects*; Dose-Response Relationship, Drug; Environmental Pollutants/toxicity*; Estradiol/administration & dosage; Estradiol/pharmacology; Female; Male; Maternal Exposure/adverse effects*; Olive Oil; Phenols/toxicity*; Pregnancy; Prenatal Exposure Delayed Effects/chemically induced*; Prenatal Exposure Delayed Effects/physiopathology; Rats, Sprague-Dawley; Spermatogenesis/drug effects*; Testosterone/administration & dosage; Testosterone/pharmacology