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相关概念视频

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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Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

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The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...
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Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Ovarian Cycle01:27

Ovarian Cycle

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The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
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相关实验视频

Updated: Jan 14, 2026

Characterization and Functional Prediction of Bacteria in Ovarian Tissues
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Characterization and Functional Prediction of Bacteria in Ovarian Tissues

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夜班工作是否与卵巢癌有关? 一个系统的审查和元分析.

Ahmed Arafa1,2, Mazin Alhussein3, Amin Alayyan4

  • 1Department of Preventive Cardiology, National Cerebral and Cardiovascular Center, Suita 564-8565, Osaka, Japan.

Medical sciences (Basel, Switzerland)
|October 24, 2025
PubMed
概括

夜班工作可能会增加卵巢癌的风险,特别是在病例对照研究中. 需要进一步的研究,以在大型前性研究中证实这一关联.

关键词:
预防癌症 预防癌症流行病学证据 流行病学证据这是一个元分析.晚班的工作人员在夜班工作.职业风险 - 职业风险是什么卵巢癌是发生在卵巢的癌症.系统性审查 系统性审查

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科学领域:

  • 流行病学 流行病学
  • 职业健康 职业健康 职业健康
  • 在瘤学瘤学.

背景情况:

  • 夜班工作是可能的致癌物,原因是昼夜节律受到干扰.
  • 夜班工作与卵巢癌风险之间的联系尚未得到充分证实.
  • 这项研究调查了夜班工作与卵巢癌之间的关联.

研究的目的:

  • 系统地审查和分析关于夜班工作和卵巢癌的现有研究.
  • 为了确定夜班工作是否与卵巢癌的风险增加有关.
  • 探索以前研究中不一致的潜在原因.

主要方法:

  • 在2025年6月之前,对多个数据库进行系统的文献搜索.
  • 使用随机效应模型计算概率比率 (OR) 和95%置信区间 (CI) 的聚合效应估计.
  • 使用I2统计和出版偏差评估异质,使用埃格尔回归测试和漏斗图.

主要成果:

  • 包括七项研究 (八个队列),涉及超过250万名女性.
  • 总体而言,夜班工作与卵巢癌没有显著的关联 (OR = 1.13; 95% CI: 0.96, 1.32).
  • 在病例控制研究 (OR = 1.36; 95% CI: 1.12, 1.66) 和高质量研究 (OR = 1.17; 95% CI: 1.00, 1.37) 中发现了显著的关联.

结论:

  • 虽然整体结果并不显著,但病例控制研究表明,夜班工作者卵巢癌风险增加.
  • 在一些队列研究中,暴露的错误分类可能使风险估计减弱.
  • 需要进行更大规模的前性研究,并进行详细的暴露评估,以确认这些发现.