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相关概念视频

Menopause01:28

Menopause

149
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
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Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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Oogenesis02:07

Oogenesis

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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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相关实验视频

Updated: Jun 19, 2025

A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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绝经年龄不会影响心室结构和功能:孟德尔的随机化研究.

Youjie Zeng1, Si Cao2, Yuan Yuan3

  • 1Department of Anesthesiology, Third Xiangya Hospital, Central South University, Changsha, China.

Climacteric : the journal of the International Menopause Society
|July 25, 2024
PubMed
概括
此摘要是机器生成的。

自然更年期 (ANM) 的年龄不会对心室结构或功能产生因果关系. 以前的关联可能源于共同的风险因素或遗传联系,而不是更年期时间的直接因果关系.

关键词:
门德尔的随机化更年期 绝经 绝经心血管疾病心血管疾病这种因果关系是因果关系.心灵的心灵心灵的心灵心灵的心灵心脏的心室是心脏的室内.卵巢衰老 卵巢衰老 卵巢衰老

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An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
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Orthotopic Ovarian Transplantation Procedures to Investigate the Life- and Health-span Influence of Ovarian Senescence in Female Mice
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相关实验视频

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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
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科学领域:

  • 心血管科学 心血管科学
  • 生殖内分泌学 生殖内分泌学
  • 遗传流行病学遗传流行病学

背景情况:

  • 观察性研究表明,自然更年期 (ANM) 时的年龄与心室特征之间存在联系.
  • 这种关联的因果性仍未确定.
  • 了解这种关系对于绝经后妇女的心血管健康至关重要.

研究的目的:

  • 研究自然更年期 (ANM) 时年龄对心室结构和功能的潜在因果影响.
  • 使用强大的遗传方法,区分因果关系和单纯的关联.

主要方法:

  • 采用孟德尔随机化 (MR) 分析,利用全基因组关联总结统计.
  • 主要分析使用了逆方差加权 (IVW) 方法,并补充了MR-Egger,加权中位数和加权模式.
  • 进行了敏感性分析,以确保调查结果的稳定性和可靠性.

主要成果:

  • 主要IVWMR分析没有发现ANM与16个评估的心室结构或功能中的任何一个之间具有统计学意义的因果关系.
  • 在所有补充MR方法中观察到一致的结果.
  • 灵敏度分析证实了结果的稳定性,没有证据表明异质性或水平性.

结论:

  • 这项门德尔随机化研究提供了强有力的证据,证明自然更年期的年龄不会因果影响心室结构或功能.
  • 在之前的观察性研究中观察到的相关性可能是由于混因素,例如共享的上游心血管风险因素或类遗传效应.
  • 这些发现表明,针对更年期时间的干预措施不太可能直接改变心室室内特征.