这是一种U形水平游泳技术,用于制备具有低DNA碎片化指数的高质量精子
Honglin Li1, Chao Zhao2, Xi Zhang2
1The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University; hayylhlin@njmu.edu.cn.
Journal of visualized experiments : JoVE
|April 14, 2025
概括
与传统的密度梯度离心法 (DGC) 相比,新的U形水平游泳 (UHS) 精子制备方法显著减少了精子DNA碎片化,改善了辅助生殖的精子质量.
科学领域:
- 生殖生物学 生殖生物学
- 精子动物 (Spermatozoa) 是一种精子.
- 辅助生殖技术是一种辅助生殖技术.
背景情况:
- 人类精液含有运动和不运动的精子,碎片和精液血.
- 高质量的精子 (运动性,正常形态) 对于受精至关重要.
- 通过不连续密度梯度离心 (DGC) 进行传统的精子制备是漫长的,劳动密集的,并且可能损害精子DNA.
研究的目的:
- 引入和评估一种新的U形水平游泳 (UHS) 方法,用于为细胞内质精子注射 (ICSI) 准备精子.
- 为了比较使用UHS方法制备的精子的DNA碎片化指数 (DFI),与传统的DGC方法进行比较.
- 评估UHS方法对精子DNA完整性的影响.
主要方法:
- U型水平游泳 (UHS) 方法涉及在ICSI盘中与受精介质一起创建一个专门的车道.
- 精液被添加到一个微滴,允许高质量的精子游向收集区域.
- 在UHS方法避免离心,最大限度地减少潜在的DNA损伤.
主要成果:
- 该研究比较了通过UHS和DGC方法准备的21个样本的精子DFI.
- DGC 组的平均 DFI 值为 5.5% ± 3.2%.
- UHS组的平均DFI显著较低,为1.7%±1.1% (P < 0.05).
结论:
- U型水平游泳 (UHS) 方法是为ICSI准备高质量的精子的一种有效技术.
- 与DGC相比,UHS显著减少了精子DNA碎片化.
- 这种新的方法为改善辅助生殖技术中的精子制备提供了一个有希望的替代方案.
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