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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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Ovaries01:26

Ovaries

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The ovaries are roughly the size of almonds and measure approximately 2 to 3 centimeters in length. These paired structures are situated within the pelvic region and are anchored by the mesovarium—a peritoneal extension that also connects them to the wider structure of the broad ligament. The support system extends to the suspensory ligament, housing blood and lymphatic vessels. In addition, the ovarian ligament tethers the ovaries to the uterus.
On the ovarian surface, a layer of...
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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...
2.7K
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 Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

688
The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
688
Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

487
The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
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関連する実験動画

Updated: Sep 10, 2025

Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome
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Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome

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機能的および構造的な子宮の変化

Lucja Zaborowska1,2, Joanna Maria Blok2, Emilia Piotrkowicz2

  • 1Doctoral School of Medical and Health Sciences, Jagiellonian University Medical College, 31-008 Cracow, Poland.

International journal of molecular sciences
|August 28, 2025
PubMed
まとめ
この要約は機械生成です。

多囊性卵巣症候群 (PCOS) は子宮の構造と機能に影響を与え,潜在的に生殖能力を低下させます. PCOS患者におけるこれらの変化とハイパーアンドロゲニズムの役割を理解するには,さらなる研究が必要です.

キーワード:
動物実験多囊性卵巣症候群妊娠子宮の血流子宮機能子宮の形状子宮

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Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome
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関連する実験動画

Last Updated: Sep 10, 2025

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Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome
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科学分野:

  • 生殖内分泌学
  • 婦人科
  • PCOSの病理生理学

背景:

  • 多囊性卵巣症候群 (PCOS) は,複雑な原因を持つ流行性内分泌障害である.
  • PCOSは月経不定期,アンドロゲン過剰,そして代謝および心血管疾患のリスクの増加と関連しています.
  • PCOSが子宮に与える影響を理解することは 生殖能力の健康に不可欠です

研究 の 目的:

  • PCOSとハイパーアンドロゲニズムに関連した子宮の構造的および機能的変化をレビューする.
  • PCOS患者,モデル,妊娠における子宮変異に関する現在の知識を統合する.
  • PCOS 子宮に関する研究のギャップを特定する.

主な方法:

  • PubMed,Medline,Embase,Google Scholar,Cochrane Library (1964年~2025年) の総合的な文献検索を行った.
  • 臨床PCOS,PCOSの動物モデル,妊娠中のPCOS患者の子宮に関する研究を含める.
  • 子宮の血流,形状,筋肉の厚さに関する発見をまとめました.

主要な成果:

  • PCOSは子宮の血流,形状,および子宮筋の厚さに影響する可能性があることが示唆されています.
  • 妊娠中の女性および妊娠していない女性において,子宮機能障害の可能性.
  • PCOSにおける子宮の変化に関する既存の知識は限られている.

結論:

  • PCOSと関連するハイパーアンドロゲニズムは,子宮の構造的および機能的な変化につながる可能性があります.
  • PCOSが子宮の健康に与える正確な影響を明らかにするために,さらなる研究が不可欠です.
  • 将来の研究では,PCOS,ハイパーアンドロゲニズム,子宮の形態/機能の関係を調査する必要があります.