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Related Concept Videos

Menopause01:28

Menopause

5.1K
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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Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

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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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Menses Phase01:18

Menses Phase

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The uterine cycle begins with the menstrual phase, which is considered day one of the cycle and typically lasts about five days. This phase is characterized by the degeneration and shedding of the stratum functionalis, the functional layer of the endometrium.
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
1.3K
The Menstrual Cycle01:19

The Menstrual Cycle

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The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
5.6K
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

7.5K
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...
7.5K
Gonadal and Placental Hormones01:24

Gonadal and Placental Hormones

3.7K
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
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Updated: Mar 17, 2026

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
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Estrogens for the menopause.

Jeffrey C Seiler1

  • 1a Cleveland Clinic Foundation Cleveland.

Postgraduate Medicine
|July 21, 2016
PubMed
Summary
This summary is machine-generated.

Exogenous estrogens effectively alleviate menopausal symptoms like hot flashes and vaginal atrophy. Physicians must confirm the necessity and safety of hormone replacement therapy before prescribing.

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Area of Science:

  • Reproductive Medicine
  • Endocrinology

Background:

  • Menopausal hormone therapy is a common treatment for distressing symptoms.
  • Estrogen therapy is known to alleviate symptoms such as hot flashes and atrophic vaginitis.

Purpose of the Study:

  • To review the efficacy of exogenous estrogens in managing menopausal symptoms.
  • To emphasize the importance of careful patient selection for hormone replacement therapy.

Main Methods:

  • Literature review on the effects of exogenous estrogens.
  • Clinical guidelines for prescribing hormone replacement therapy.

Main Results:

  • Exogenous estrogens provide significant relief from menopausal symptoms.
  • The decision to prescribe requires a thorough assessment of the patient's condition.

Conclusions:

  • Hormone replacement therapy with exogenous estrogens is effective for symptom management.
  • Physicians must balance symptom relief with potential risks before prescribing.