不同扩展剂在冷保存过程中对公牛精子的表观遗传模式和功能参数的影响
Razieh Fouladvandi1, Ali Akbar Masoudi1, Mehdi Totonchi2
1Department of Animal Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Reproduction in domestic animals = Zuchthygiene
|May 3, 2024
概括
与卵黄扩展剂 (EYE) 相比,大豆莱西丁扩展剂 (SLE) 在冷保存后更好地保留公牛精子表观遗传和质量. SLE保持了更高的活力和运动性,这表明它有可能改进精子冷技术.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 精子冷保存 精子冷保存
背景情况:
- 冷保存改变了公牛精子的细胞和表观遗传参数.
- 冷延长器中的冷保护剂可以减轻这些变化.
- 豆 lecithin扩展剂 (SLE) 和蛋黄扩展剂 (EYE) 是常见的冷保护剂.
研究的目的:
- 为了比较SLE和EYE对公牛精子表观遗传学和冷保存后质量的保护作用.
- 评估对机动性,线粒体膜完整性,DNA碎片化,生存能力和亡的影响.
主要方法:
- 牛精子被冷保存,使用基于大豆莱西丁 (SLE) 和蛋黄 (EYE) 的扩展剂.
- 分析了表观遗传模式 (DNA 全球甲基化,H3K9 基因素乙化,H3K4 基因素甲基化).
- 评估了精子质量参数,包括运动性,活力,线粒体膜完整性,DNA碎片化和亡.
主要成果:
- 与新鲜精子相比,冷保存在两组中显著降低了DNA甲基化和基因素甲基化/乙化.
- SLE组的H3K9乙化水平高于EYE组.
- 与眼睛组相比,SLE组表现出更好的活力,渐进的运动性和线性 (LIN);在线粒体完整性或DNA碎片化方面没有观察到差异.
结论:
- 大豆莱西丁扩展剂在冷保存期间对公牛精子表观遗传学和质量产生保护作用.
- 与眼相比,SLE支持冷后更好的精子生存能力和运动能力.
- 需要进一步的研究来优化SLE以提高公牛精子的冷保存.
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