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Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

2.8K
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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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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Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

492
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...
492
Infertility in Females01:28

Infertility in Females

402
Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of...
402
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

700
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...
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相关实验视频

Updated: Sep 12, 2025

Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome
04:49

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

Published on: July 5, 2024

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诱导剂和PCOS - 一个全面的分析.

Dhanyaa Muthukumaran1, Jayalakshmi Kumar1, Rajeshkumar Shanmugam1

  • 1Nanobiomedicine Lab, Department of Anatomy, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, TamilNadu 602105, India.

The Journal of steroid biochemistry and molecular biology
|August 7, 2025
PubMed
概括

动物模型对于理解多囊性卵巢综合征 (PCOS) 是至关重要的. 本综述评估了用于在动物中创建PCOS模型的药物,评估它们模仿人类疾病症状的能力,以便进行更好的研究.

关键词:
动物模型动物模型药物管理 药物管理诱导剂 诱导剂 是一种诱导剂.在PCOS中,PCOS是PCOS.

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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome
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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome

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相关实验视频

Last Updated: Sep 12, 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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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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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome

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科学领域:

  • 内分泌学 在内分泌学.
  • 生殖生物学 生殖生物学
  • 动物建模动物建模

背景情况:

  • 多囊性卵巢综合征 (PCOS) 是一种普遍存在的内分泌疾病,其病因不明.
  • 动物模型对于研究PCOS机制和开发治疗方法至关重要.

研究的目的:

  • 批判性地评估PCOS动物模型中使用的药物.
  • 评估这些模型模拟人类PCOS表现的能力.
  • 为了比较不同诱导剂的强度和局限性.

主要方法:

  • 诱导剂的审查:雄激素,雌激素,芳酶抑制剂,内分泌干扰剂和饮食.
  • 使用动物物种的分析:老鼠,小鼠,斑马鱼.
  • 在模型中评估临床,代谢和生殖结果.

主要成果:

  • 在动物模型中,各种药物成功诱导PCOS特征,如高雄性和无卵性.
  • 每个代理和模型在复制人类PCOS方面都表现出独特的优势和局限性.
  • 模型为特定的PCOS方面提供了洞察力,但没有一个完全复制人类综合征.

结论:

  • 动物模型对于PCOS研究和治疗试验至关重要.
  • 谨慎选择诱导剂和物种对于翻译相关性至关重要.
  • 未来的模型应该整合生殖和代谢特征,以提高临床适用性.