title: Perinatal exposure to low doses of tributyltin chloride advances puberty and affects patterns of estrous cyclicity in female mice.
abstract: Tributyltin (TBT), a proven endocrine-disrupting chemical, is well known to induce imposex in female gastropods. Herein we demonstrate the effects of low doses of tributyltin chloride (TBTCl) on the female offspring of KM mice. Pregnant mice were administered by gavage with 0, 1, 10, or 100 μg TBTCl/kg body weight/day from day 6 of pregnancy through the period of lactation. TBTCl dramatically advanced the age of onset of vaginal opening (VO) and first vaginal estrus, and reduced body weights at VO and first estrus. Furthermore, perinatal treatment with TBTCl significantly reduced the number of days between VO and first estrus. In addition, female offspring from dams exposed to 10 and 100 μg kg(-1) TBTCl exhibited altered patterns of estrous cyclicity in adulthood. In conclusion, perinatal exposure to low doses TBTCl result in early puberty and impaired estrous cyclicity in female mice, which suggest that TBTCl might act as an estrogen agonist or/and a disruptor on hypothalamic-pituitary function in the present study.
authors.affiliation: School of Public Health, Shandong University, Jinan, People's Republic of China.
authors.forename: Jiliang
authors.initials: J
authors.lastname: Si
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Han
authors.forename: Fengmei
authors.initials: F
authors.lastname: Zhang
authors.forename: Quanbin
authors.initials: Q
authors.lastname: Xin
authors.forename: Lihong
authors.initials: L
authors.lastname: An
authors.forename: Guozhen
authors.initials: G
authors.lastname: Li
authors.forename: Chen
authors.initials: C
authors.lastname: Li
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D052244:Endocrine Disruptors / Q000633:toxicity; D030762:Estrous Cycle / Q000187:drug effects*; D004971:Estrus / Q000187:drug effects; D005260:Female; D007774:Lactation; D051379:Mice; D009929:Organ Size; D010053:Ovary / Q000187:drug effects; D011247:Pregnancy; D012741:Sexual Maturation / Q000187:drug effects*; D014220:Trialkyltin Compounds / Q000633:toxicity*; D014621:Vagina / Q000187:drug effects
chemical_list: D052244:Endocrine Disruptors; D014220:Trialkyltin Compounds; C011559:tributyltin