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相关概念视频

Meiosis II01:57

Meiosis II

Meiosis II is the second and final stage of meiosis. It relies on the haploid cells produced during meiosis I, each of which contain only 23 chromosomes—one from each homologous initial pair. Importantly, each chromosome in these cells is composed of two joined copies, and when these cells enter meiosis II, the goal is to separate such sister chromatids using the same microtubule-based network employed in other division processes. The result of meiosis II is two haploid cells, each containing...
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In Vitro Fertilization

In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...

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相关实验视频

Updated: Jun 24, 2026

Manipulation and In Vitro Maturation of Xenopus laevis Oocytes, Followed by Intracytoplasmic Sperm Injection, to Study Embryonic Development
09:22

Manipulation and In Vitro Maturation of Xenopus laevis Oocytes, Followed by Intracytoplasmic Sperm Injection, to Study Embryonic Development

Published on: February 9, 2015

通过细胞内精子注射进行体外受精后生命第二年的结果:英国的病例控制研究.

A G Sutcliffe1, B Taylor, K Saunders

  • 1Royal Free and University College Medical School, Department of Paediatrics and Child Health, Royal Free Campus, NW3 2PF, London, UK. icsi@rfc.ucl.ac.uk

Lancet (London, England)
|July 11, 2001
PubMed
概括
此摘要是机器生成的。

通过细胞内质精子注射 (ICSI) 怀孕的儿童与自然怀孕的同龄人相比,没有显著的神经发育差异. 这项研究发现ICSI受孕儿童的身体健康和发育结果相似.

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科学领域:

  • 生殖医学 生殖医学
  • 发育儿科 发育儿科
  • 人类遗传学 人类遗传学

背景情况:

  • 报告显示,通过细胞内精子注射 (ICSI) 怀孕的儿童的神经发育风险增加.
  • 进行了一项病例控制研究,以调查有关ICSI结果的这些担忧.

研究的目的:

  • 将ICSI怀孕的儿童的神经发育结果与自然怀孕的儿童进行比较.
  • 评估ICSI怀孕儿童的围产期结果,产后健康状况和先天性异常.

主要方法:

  • 一项病例控制研究,涉及208个通过ICSI怀孕的单独婴儿和221个自然怀孕的对照.
  • 儿童从英国生育中心和托儿所招募,并与关键的人口因素相匹配.
  • 使用格里菲斯尺度进行神经发育评分是主要结果,并对健康和异常进行二次评估.

主要成果:

  • 在ICSI和对照组之间没有观察到平均神经发育得分的显著差异.
  • ICSI组的剖腹产率更高,平均出生体重更低.
  • 发现了类似的重大先天性异常率,尽管在父亲患有小动物精子症的孩子中发生的情况更多.

结论:

  • 这项人口研究表明,ICSI怀孕的儿童和自然怀孕的同龄人之间身体健康和发育没有显著差异.
  • 这些发现不支持通过ICSI怀孕的儿童神经发育迟缓的风险增加.