کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2572231 1561192 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sexual maturation and fertility of mice exposed to triphenyltin during prepubertal and pubertal periods
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
Sexual maturation and fertility of mice exposed to triphenyltin during prepubertal and pubertal periods
چکیده انگلیسی


• NOAEL for general toxicity was 1.875 (male) or 3.75 (female) mg of TPT/kg bw/d po.
• Reproductive toxicity occurred only at doses of TPT that also caused general toxicity.
• NOAEL for harmful effects on male reproduction was 1.875 mg of TPT/kg bw/d po.
• NOAEL for harmful effects on female reproduction was 3.75 mg of TPT/kg bw/d po.
• TPT-caused decrease in spermatid and sperm count was reversed after treatment.
• Exposure to TPT during pre/pubertal period did not impair adult mice fertility.

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Toxicology Reports - Volume 2, 2015, Pages 405–414
نویسندگان
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