延迟的第二极体挤出增加了异常裂解的风险,并损害了胚胎的发育潜力:一个追溯的时间延迟研究
Haifang Liu1, Shikai Wang1, Xianbao Mao1
1Reproductive Medical and Genetic Center, The People's Hospital of GuangXi Zhuang Autonomous Region, Nanning, 530021, China.
Scientific reports
|July 2, 2025
概括
在细胞内精子注射 (ICSI) 后延迟的第二极体 (Pb2) 挤出与较差的胚胎发育和较低的怀孕成功率有关. 这一发现强调了及时Pb2挤出对于成功的试管婴儿结果的重要性.
科学领域:
- 生殖医学 生殖医学
- 胚胎学 胚胎学
- 在体外受精 (IVF)
背景情况:
- 第二极体 (Pb2) 挤出是卵细胞成熟和受精的关键事件.
- 了解Pb2挤出的时间及其对胚胎发育的影响,对于优化试管婴儿方案至关重要.
研究的目的:
- 研究第二极体 (Pb2) 挤出时间与胚胎发育和潜力的关键指标之间的关系.
- 评估Pb2挤出时间和在细胞内精子注射 (ICSI) 后的临床怀孕和植入率之间的相关性.
主要方法:
- 对398个ICSI周期进行了回顾性分析.
- 评估动态裂变参数,包括直接裂变 (DC) 和混乱裂变 (CC).
- 对Pb2挤出时间与第3天高质量胚胎,胚胎细胞形成以及临床结果 (如临床怀孕率 (CPR) 和植入率 (IR)) 的相关性分析.
主要成果:
- 延迟Pb2挤出 (>5小时) 与高质量的胚胎和胚芽细胞形成率有负相关性.
- 延迟Pb2挤出与直接和混乱的裂变模式有关.
- 来自延迟Pb2挤出周期的胚胎显示临床怀孕和植入率明显较低.
结论:
- 延迟Pb2挤出与胚胎发育效率的降低有关,其特点是发育缓慢和异常裂变的增加.
- 及时的Pb2挤出是成功胚胎发育和ICSI周期中改善妊娠结果的重要因素.
- 转移延迟Pb2挤出胚胎可能会对临床结果产生负面影响.
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