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精液冷保存和储存在液中:对染色体紧缩的影响

Lara Tamburrino¹, Giulia Traini², Maria Emanuela Ragosta³

¹Andrology, Women's Endocrinology and Gender Incongruence Unit, Center for Prevention, Diagnosis and Treatment of Infertility, Careggi University Hospital, Florence, Italy.

|November 29, 2024

概括

精子冷保存对精子质量产生负面影响,包括运动性和活力. 该研究发现,冷/解会改变精子染色质结构,而更长的储存时间会加剧这些影响.

科学领域:

生殖生物学生殖生物学
安德罗学与人类学
低温生物学低温生物学

背景情况:

精子冷保存是一种保护男性生育能力的标准方法.
结和解精子可能会损害精子的生命力,运动性和DNA完整性.
对精子染色质紧缩的影响不太清楚.

研究的目的:

为了研究冷保存对精子染色质紧缩的影响.
评估冷保存如何影响精子参数 (运动性,活力,染色质紧缩,DNA碎片化) 随着时间的推移.

主要方法:

来自126名患者的精液样本使用快速蒸汽冷进行了冷保存.
在解前后评估精子运动,活力,动力学 (CASA),染色质紧缩 (AB,CMA3) 和DNA碎片化 (TUNEL/PI).
在不同的储存时间 (7,28,180天) 中评估的参数.

主要成果:

结冷保存在7天后显著降低了精子的运动性,活力和动力学.
在解后观察到对CMA3,AB染色和DNA碎片化的精子阳性增加.
随着更长的储存时间,运动性和活力的逐渐恶化发生,而染色质结构的变化不那么明显.

结论:

精子冷和解程序可以改变精子染色质结构,可能是由于减少原胺含量或修改染色质组合.
在液中储存的时间似乎逐渐影响精子参数.
目前的冷保存协议需要改进,使用新的策略来最大限度地减少精子损伤.

关键词:

辅助生殖辅助生殖是一种辅助生殖.在这种情况下,染色染色素保护生育能力保护生育能力人类的精子,人类的精子.精液冷保存精液冷保存精子运动性精子运动性

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