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首页> 外文期刊>Archives of Toxicology >Effects of sodium fluoride on hyperactivation and Ca2+ signaling pathway in sperm from mice: an in vivo study.
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Effects of sodium fluoride on hyperactivation and Ca2+ signaling pathway in sperm from mice: an in vivo study.

机译:氟化钠对小鼠精子过度活化和Ca2 +信号通路的影响:一项体内研究。

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Sperm hyperactivation is crucial for a successful fertilization; however, the influence of fluoride (F) to hyperactivation is still in its infancy. The purpose of this study was to investigate the effect of sodium fluoride (NaF) on sperm hyperactivation, Ca2+/CALM-CAMK2 signaling, and CatSper1 and CatSper2 mRNA expression in mice sperm. Adult male Kunming mice were administrated with 30, 70, and 150 mg NaF/l (corresponding to 2.84 +/- 0.29, 6.28 +/- 0.61, and 14.18 +/- 1.00 mg F/kg body weight per day) through drinking water for 49 days. The results showed that NaF reduced the sperm hyperactivated motility in a dose-dependent manner. Compared with the controls, intracellular Ca2+ concentration and CAMK2 protein were significantly decreased in mice treated with 70 and 150 mg NaF/l, while no effect on CALM was determined in all treatment groups. Furthermore, decreased sperm CatSper1 mRNA expression was also observed in response to middle and higher doses of NaF (70, 150 mg/l) with comparison to the control group, whereas no change in the mRNA expression of CatSper2 was detected in NaF administrated groups. Treatment with 30 mg NaF/l exhibited slight effects on the above indexes with no statistical difference. These findings indicated that exposure to 70 and 150 mg/l NaF for 49 days could result in low hyperactivation via alteration of Ca2+ signaling pathway involving CatSper1 in sperm from mice.
机译:精子过度活化对于成功受精至关重要。然而,氟化物(F)对过度活化的影响仍处于起步阶段。这项研究的目的是研究氟化钠(NaF)对小鼠精子中超活化,Ca2 + / CALM-CAMK2信号以及CatSper1和CatSper2 mRNA表达的影响。每天以30、70和150 mg NaF / l(相当于每天2.84 +/- 0.29、6.28 +/- 0.61和14.18 +/- 1.00 mg F / kg体重)给予成年雄性昆明小鼠持续49天。结果表明,NaF以剂量依赖的方式降低了精子的过度活化活力。与对照组相比,用70和150 mg NaF / l治疗的小鼠的细胞内Ca2 +浓度和CAMK2蛋白显着降低,而在所有治疗组中均未发现对CALM有影响。此外,与对照组相比,对中等剂量和更高剂量的NaF(70,150 mg / l)也观察到精子CatSper1 mRNA表达下降,而在NaF给药组中未检测到CatSper2 mRNA表达的变化。用30 mg NaF / l处理对上述指标显示轻微影响,无统计学差异。这些发现表明,在70和150 mg / l NaF中暴露49天可能通过改变小鼠精子中涉及CatSper1的Ca2 +信号传导途径而导致低过度活化。

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