人类精子作为体外毒性模型:用于评估环境污染物的风险的多功能工具
Shannen Keyser1,2, Daniel Marcu3, Morgan T D Davidse2
1School of Nursing, Faculty of Community and Health Sciences, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.
Archives of toxicology
|May 3, 2025
概括
人类精子作为一个敏感的体外模型来检测环境毒素. 除了精子运动之外,先进的精子功能测试对于准确的新兴关注污染物 (CEC) 毒性查至关重要.
科学领域:
- 环境毒理学环境毒理学
- 生殖生物学 生殖生物学
- 在体外毒理学中
背景情况:
- 新兴关注的污染物 (CECs) 威胁环境和人类健康.
- 现有的体内毒性查方法耗时.
- 需要替代的体外模型来快速评估风险.
研究的目的:
- 评估人类精子作为CEC毒性查的体外模型.
- 识别敏感的精子功能参数,以检测微妙的毒性影响.
- 评估药品和农药对精子功能的影响.
主要方法:
- 选择高度运动的精子亚种群.
- 精子暴露于单个或混合CEC (药品,农药) 1-4小时.
- 评估精子运动性,动力学,过度激活,活力,线粒体膜潜力 (MMP) 和活性氧物种 (ROS).
主要成果:
- 总精子运动率是微妙毒性影响的不充分衡量标准.
- 精子动力学,过度活化,活力,MMP和ROS是毒性更敏感的指标.
- 大多数CEC对精子参数呈现出剂量依赖的负面影响.
- 人类精子对氧化应激,线粒体损伤和代谢干扰表现出敏感性.
结论:
- 人类精子是CEC毒性评估的强大而敏感的体外模型.
- 对多个精子功能参数的全面评估对于准确的风险评估至关重要.
- 这种方法推进了环境风险评估的替代蜂模型.
相关概念视频
Spermatogenesis
101.7K
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...
101.7K
Types of Toxins
1.3K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
1.3K


