由于慢性不可预测的轻度压力而增加的阿尔多素会损害年轻大鼠的外皮膜精子质量
Tonantzi Guadalupe Osorio Pérez1, Eliut Pérez-Sánchez2, Vanessa Guadalupe Nolasco Garduño1
1Posgrado en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Tlaxcala, México.
General and comparative endocrinology
|September 25, 2025
概括
压力诱导的阿尔多素会对老鼠的精子质量和水平产生负面影响. 然而,50mg/kg的eplerenone剂量有效地逆转了这些有害影响,改善了精子的运动性和活力.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 毒理学 毒理学 毒理学
背景情况:
- 在年轻的老鼠中,阿尔多斯特水平随着压力而上升.
- 众所周知,阿尔多斯特可以抑制的产生.
- 慢性压力可能会对生殖健康产生负面影响.
研究的目的:
- 为了研究阿尔多斯特对年轻老鼠在慢性不可预测的轻度压力 (CUMS) 下精子质量的影响.
- 确定阿尔多激素阻断剂eplerenone是否可以逆转压力引起的精子质量损害.
- 评估eplerenone的剂量依赖性影响和潜在毒性.
主要方法:
- 42只年轻的雄性Wistar大鼠接受了为期四周的CUMS范式.
- 鼠被分为对照组和CUMS组,CUMS组接受不同剂量的eplerenone (25,50,100毫克/公斤).
- 评估包括血清丸激素,氧化应激标志物,细胞亡和 epididymal 精子参数 (运动性,活力,度).
主要成果:
- CUMS导致丸激素水平降低和精子质量差.
- 与单独使用CUMS相比,50mg/kg的eplerenone剂量显著改善了精子运动率 (28.8%),活力 (36.9%) 和度 (58.9%).
- 100毫克/千克的eplerenone剂量是有毒的,诱导氧化应激和亡.
结论:
- 阿尔多斯特通过降低丸激素水平,对精子运动性,活力和度产生负面影响,从而对外皮质精子质量产生负面影响.
- 在老鼠中,50 mg/kg的eplerenone有效地逆转了阿尔多斯激素诱导的精子质量受损.
- 这些发现支持了阿尔多斯特会损害精子质量的假设,并且这种情况在适当的eplerenone剂量下是可逆的.
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