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Related Concept Videos

Oogenesis02:07

Oogenesis

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...
Oogenesis01:22

Oogenesis

Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

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...
Ovarian Cycle01:27

Ovarian Cycle

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 length...
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

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...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...

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Related Experiment Video

Updated: Jun 5, 2026

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
09:44

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model

Published on: March 5, 2022

Polycystic ovary syndrome.

Zi-Jiang Chen1, Yuhua Shi

  • 1Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, 250021, China. zjchen_59@yahoo.com

Frontiers of Medicine in China
|December 31, 2010
PubMed
Summary

Polycystic ovary syndrome (PCOS) is a common endocrine disorder affecting women, linked to genetics and environment. It impacts fertility, metabolism, and increases risks for serious health conditions like diabetes and heart disease.

Area of Science:

  • Gynecologic endocrinology
  • Reproductive medicine
  • Metabolic health

Background:

  • Polycystic ovary syndrome (PCOS) is a prevalent endocrine disorder in women.
  • Its development involves complex interactions between genetic predisposition and environmental factors.
  • PCOS significantly affects endocrine function, reproductive capacity, and metabolic processes.

Purpose of the Study:

  • To summarize the multifaceted impacts of PCOS on female health.
  • To highlight the reproductive and metabolic consequences of PCOS.
  • To underscore the increased health risks associated with PCOS.

Main Methods:

  • Literature review of PCOS pathogenesis and clinical manifestations.
  • Analysis of endocrine, reproductive, and metabolic effects.

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Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
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  • Assessment of associated long-term health risks.

    • Main Results:

    • PCOS is linked to anovulatory infertility and increased early pregnancy loss.
    • Metabolic disturbances include insulin resistance, impaired glucose tolerance, and dyslipidemia.
    • PCOS patients face elevated risks for diabetes, cardiovascular disease, hypertension, metabolic syndrome, and endometrial cancer.

    Conclusions:

    • PCOS is a complex condition with significant reproductive and metabolic implications.
    • Early diagnosis and management are crucial for mitigating long-term health risks.
    • Further research into PCOS pathogenesis and treatment is warranted.