PMID- 14520509 OWN - NLM STAT- MEDLINE DCOM- 20040928 LR - 20161124 IS - 0340-5761 (Print) IS - 0340-5761 (Linking) VI - 78 IP - 2 DP - 2004 Feb TI - Lack of maternal dietary exposure effects of bisphenol A and nonylphenol during the critical period for brain sexual differentiation on the reproductive/endocrine systems in later life. PG - 97-105 AB - Two potential endocrine-disrupting chemicals, bisphenol A (BPA) and nonylphenol (NP), were assessed for their long-lasting effects on endocrine/reproductive systems following transplacental and lactational exposure to rat offspring during a time-window that included the critical period for brain sexual differentiation. Each chemical was mixed with diet at concentrations of 60, 600 and 3000 ppm and was provided to maternal Sprague-Dawley rats from gestational day (GD) 15 to postnatal day (PND) 10. Ethinylestradiol (EE) at 0.5 ppm was used as an estrogenic reference drug. During pregnancy and lactation, including the exposure period, a soy-free rodent diet was provided to eliminate possible modification of the study results by plant-derived phytoestrogens. Effects on endocrine/reproductive systems were evaluated by examining the anogenital distance, organ weights before puberty, onset of puberty, estrous cyclicity, and organ weights and histopathology of adult endocrine organs (at 11 weeks of age), as well as the volume of the sexually dimorphic nucleus of preoptic area. Both NP and BPA, at high doses, caused decreases in maternal body weights and retardation of offspring growth, but neither affected any of the endocrine/reproductive endpoints of offspring, whereas EE induced irreversible changes in estrous cyclicity and histopathology of ovaries and uterus of adult females. The results indicated that maternal dietary exposure to NP or BPA at concentrations up to 3000 ppm from GD 15 through PND 10 do not exert any apparent adverse effects on the endocrine/reproductive systems of offspring. FAU - Takagi, Hironori AU - Takagi H AD - Division of Pathology, National Institute of Health Sciences, 158-8501, Tokyo, Japan. FAU - Shibutani, Makoto AU - Shibutani M FAU - Masutomi, Naoya AU - Masutomi N FAU - Uneyama, Chikako AU - Uneyama C FAU - Takahashi, Noriyuki AU - Takahashi N FAU - Mitsumori, Kunitoshi AU - Mitsumori K FAU - Hirose, Masao AU - Hirose M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20031001 PL - Germany TA - Arch Toxicol JT - Archives of toxicology JID - 0417615 RN - 0 (Benzhydryl Compounds) RN - 0 (Estrogens, Non-Steroidal) RN - 0 (Phenols) RN - 79F6A2ILP5 (nonylphenol) RN - MLT3645I99 (bisphenol A) SB - IM MH - Administration, Oral MH - Animals MH - Benzhydryl Compounds MH - Brain/drug effects/embryology/growth & development MH - Diet MH - Dose-Response Relationship, Drug MH - Endocrine System/*drug effects/growth & development/pathology MH - Estrogens, Non-Steroidal/administration & dosage/*toxicity MH - Female MH - Genitalia/*drug effects/growth & development/pathology MH - Lactation MH - Maternal Exposure/*adverse effects MH - Phenols/administration & dosage/*toxicity MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Rats MH - Rats, Sprague-Dawley MH - Sex Characteristics MH - Time Factors EDAT- 2003/10/02 05:00 MHDA- 2004/09/29 05:00 CRDT- 2003/10/02 05:00 PHST- 2003/03/07 00:00 [received] PHST- 2003/08/19 00:00 [accepted] PHST- 2003/10/02 05:00 [pubmed] PHST- 2004/09/29 05:00 [medline] PHST- 2003/10/02 05:00 [entrez] AID - 10.1007/s00204-003-0517-0 [doi] PST - ppublish SO - Arch Toxicol. 2004 Feb;78(2):97-105. doi: 10.1007/s00204-003-0517-0. Epub 2003 Oct 1.