Sexual maturation and fertility of mice exposed to triphenyltin during prepubertal and pubertal periods
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Data
2015
Autores
Mello, Marcia Sarpa de Campos
Delgado, Isabella Fernandes
Favareto, Ana Paula Alves [UNESP]
Lopes, Camila M. T.
Batista, Marcelo Meuser
Kempinas, Wilma de Grava [UNESP]
Paumgartten, Francisco José Roma
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier Ireland Ltd.
Resumo
This study investigated the effects of pre- and peripubertal exposure (PND 15–45) to triphenyltin hydroxide (TPT: 0, 1.875, 3.75, 7.5 and 15 mg/kg bw/d po) on mouse sexual maturation and fertility. Half of the mice were euthanized on PND 46 and the remaining mice were submitted to fertility tests on PND 65–75. TPT caused a transient decrease of weight gain at 3.75 mg/kg bw/d, and deaths and body weight deficits at higher doses. Delays of testes descent (TD), vaginal opening (VO) and first estrus (FE) occurred at doses ≥3.75 (TD) and ≥7.5 mg/kg bw/d (VO, FE), respectively. Body weight on the days of TD, VO and FE did not differ among groups. TPT at doses ≥3.75 mg/kg decreased sperm and spermatid counts at the end of treatment (PND 46) but no alteration was noted later on PND 75. Testicular histopathology (PND 46) showed a dose-dependent reduction of seminiferous tubules diameter, a greater degree of vacuolation in Sertoli cells and germ cell degeneration and necrosis in TPT-treated mice. TPT did not affect the outcome of fertility tests. Study-derived NOAEL was 1.875 mg TPT/kg bw/d for males and 3.75 mg TPT/kg bw/d for females. The detrimental effects of TPT on spermatogenesis were reversed after treatment discontinuation.
Descrição
Palavras-chave
Triphenyltin, TPTH, Organotin compounds, Puberty, Postnatal exposure, Fertility
Como citar
Toxicology Reports, v. 2, p. 405-414, 2015.