来自部分压缩morulae的胚芽细胞并不是由它们早期的错误来定义的
Monica Parriego1, Lluc Coll1, Beatriz Carrasco1
1Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproduction. Dexeus Mujer. Dexeus University Hospital. Gran Via Carles III, 71-75. 08028 Barcelona, Spain.
Reproductive biomedicine online
|February 17, 2024
概括
早期胚胎的部分紧缩会降低发育潜力,但不会影响产生的胚胎细胞的积率或活产率. 这表明细胞排除可能表明受损的胚胎发育,无论染色体构成如何.
科学领域:
- 生殖生物学 生殖生物学
- 胚胎学 胚胎学
- 遗传学 遗传学 是一个
背景情况:
- 毛囊形成涉及紧缩,在这种情况下,芽质体会粘附形成一个固体球体.
- 部分紧缩,其中不包括所有胚芽细胞,是一个不太了解的现象.
- 部分压缩对发育的影响尚不清楚.
研究的目的:
- 为了研究在毛囊形成期间的部分紧缩是否与胚胎发育能力和植入潜力有关.
- 为了比较完全和部分紧缩的胚胎之间的生殖结果.
主要方法:
- 追溯分析了196个植入前遗传测试的化 (PGT-A) 周期.
- 胚胎被分类为完全或部分紧缩组,基于胚芽细胞的包含.
- 对比了形态动力学参数,胚胎细胞形成,形态学和细胞遗传结构.
- 评估了生殖结果和染色体一致性.
主要成果:
- 在49.3%的胚胎中发生了部分紧缩,与母亲的年龄或卵巢反应无关.
- 部分紧缩的胚胎表现出改变的形态动力学和较低的芽细胞形成率 (57.2%vs70.8%).
- 然而,部分和完全紧缩组之间的euploidy率 (38.4%与34.2%) 和活产率 (51.9%与46.2%) 是相当的.
结论:
- 部分紧缩与胚胎发育能力的降低有关.
- 尽管发育的差异,来自部分和完全紧缩组的胚胎细胞产生类似的euploidy率和生殖结果.
- 在压缩过程中细胞排除可能表明胚胎发育受损,独立于染色体状态.
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