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Related Concept Videos

Menopause01:28

Menopause

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...
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

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 release.
Signs of Puberty01:27

Signs of Puberty

Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
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...
The Menstrual Cycle01:19

The Menstrual Cycle

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 uterine...

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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice

Published on: April 7, 2014

What can development teach us about menopause?

Margaret M McCarthy1

  • 1Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA. mmccarth@umaryland.edu

Brain Research
|December 8, 2010
PubMed
Summary
This summary is machine-generated.

Estradiol impacts brain development and aging similarly, affecting neurotransmitters like GABA and glutamate. This review explores these parallels for new therapeutic strategies.

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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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Exploring Independent Effects of Follicle-Stimulating Hormone In Vivo in a Mouse Model
05:32

Exploring Independent Effects of Follicle-Stimulating Hormone In Vivo in a Mouse Model

Published on: August 11, 2023

Area of Science:

  • Neuroendocrinology
  • Developmental Neuroscience
  • Gerontology

Background:

  • Estradiol, a key steroid hormone, plays critical roles in both brain development and aging.
  • Both developing and aging brains exhibit heightened sensitivity to hormonal fluctuations.
  • Key neurobiological processes like synaptogenesis and cell proliferation are modulated by estradiol in both life stages.

Purpose of the Study:

  • To compare and contrast the effects of estradiol on the developing and aging brain.
  • To identify common mechanisms underlying estradiol's influence across the lifespan.
  • To highlight potential therapeutic avenues for age-related cognitive decline and menopausal symptoms.

Main Methods:

  • Comparative review of existing literature.
  • Analysis of studies on estradiol's effects on neurodevelopment.
  • Examination of research on estradiol in perimenopausal and aging brain models.

Main Results:

  • Estradiol influences neurotransmission (GABA, glutamate) and neuroplasticity (synaptogenesis, cell proliferation) in both developing and aging brains.
  • Developmental and aging processes show comparable hormonal sensitivity and response patterns to estradiol.
  • Shared molecular targets exist for estradiol in both distinct brain states.

Conclusions:

  • Estradiol's actions on the brain exhibit striking similarities during development and aging.
  • Understanding these parallels can inform novel therapeutic strategies targeting hormone-related brain changes.
  • Further research into estradiol's dual role offers promise for cognitive health across the lifespan.