超越体积:胚胎形态,孕产妇年龄和PGT-A中选择的单个胚胎移植中的流产动态
Ilaria Listorti1, Roberta Manzo2, Ermanno Greco2,3
1Department of Reproductive Medicine, Villa Mafalda, 00199, Rome, Italy. ilaria.listorti@gmail.com.
Journal of assisted reproduction and genetics
|November 3, 2025
概括
胚胎形态,而不是母亲的年龄或时间,是PGT-A单个胚胎移植后怀孕成功的关键预测因素. 即使有正常染色体,胚胎质量也会显著影响活产率和流产风险.
科学领域:
- 生殖医学 生殖医学
- 胚胎学 胚胎学
- 遗传学 遗传学 是一个
背景情况:
- 母亲年龄是影响生育能力和怀孕结果的已知因素.
- 预植入前遗传测试 (PGT-A) 旨在通过选择染色体正常的胚胎来提高成功率.
- 在PGT-A选择单个胚胎移植 (sSET) 中,母亲的年龄,胚胎质量和发育时间之间的相互作用需要进一步澄清.
研究的目的:
- 为了研究孕妇年龄,胚胎形态和胚胎细胞发育时间之间的相互作用,在PGT-A sSET中研究怀孕成功.
- 为了确定胚胎染色体健康是否减轻与年龄相关的生育能力下降.
主要方法:
- 对822个冷的PGT-A sSET周期 (自身卵子和捐赠卵子) 的回顾性分析.
- 评估结果:正在进行的怀孕/活产,植入和流产率.
- 母亲年龄被分类和连续分析,以及胚胎形态学和胚胎囊扩张时间.
主要成果:
- 与较年轻的群体相比,年龄≥42岁的妇女的持续怀孕/活产率较低,胚胎形态较差,胚胎囊扩张延迟.
- 胚胎形态是成功的最强有力的预测因素:优质的胚胎增加了4.6倍的持续怀孕/活产几率.
- 每年增加母亲年龄,流产风险增加11%.
结论:
- 胚胎形态质量是预测怀孕成功的主要因素,即使是通过PGT-A选择的染色体正常胚胎.
- 孕产妇的年龄不仅通过形积分影响生育能力,而且还可能损害胚胎能力和生理学.
- 这些发现强调了胚胎质量在克服与年龄相关的生育挑战方面的关键作用.
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