六价通过向氨酸度和线粒体功能来抑制人类精子的运动性
Zhen Peng1,2, Yimin Cheng1
1College of Basic Medicine, Yichun University, Yichun, China.
Journal of applied toxicology : JAT
|January 7, 2026
概括
六价 (Cr VI) 暴露会损害男性生育能力,因为它会降低精子氨酸的糖分和损害线粒体. 用酸补充剂部分恢复了精子功能,这表明了Cr VI毒性的关键机制.
科学领域:
- 环境毒理学环境毒理学
- 生殖生物学 生殖生物学
- 生物化学 生物化学
背景情况:
- 六价 (Cr VI) 是一个广泛存在的工业污染物.
- 暴露于CrVI可能会积聚在男性生殖细胞中,可能会损害生育能力.
- 通过CrVI影响人类精子功能的具体机制尚未完全理解.
研究的目的:
- 研究CrVI对人类精子功能的影响.
- 为了确定Cr VI是否会破坏氨酸糖和线粒体功能.
- 阐明Cr VI诱导的男性生殖毒性的潜在机制.
主要方法:
- 人类精子暴露于二氧化 (K2CrO4).
- 评估精子氨酸质化水平,反应性氧物种 (ROS) 生产,线粒体膜潜力和ATP含量.
- 评估谷氨酸的保护作用的管理.
主要成果:
- 暴露于K2CrO4显著降低了精子氨酸糖分.
- 暴露于CrVI增加了细胞内ROS,并导致线粒体脱极化.
- 在CrVI暴露后,ATP含量下降,精子运动受损.
- 酸部分扭转了K2CrO4对精子参数的负面影响.
结论:
- Cr VI 通过破坏氨酸分泌,损害了人类精子的功能.
- 线粒体功能障碍和氧化应激增加是CrVI暴露的关键后果.
- 向氨酸糖化通路可能提供一种治疗策略,用于治疗Cr VI诱导的男性不孕症.
相关概念视频
Spermatogenesis
121.6K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
121.6K
Infertility in Males
522
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
522


