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Related Concept Videos

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Mitochondrial Membranes01:45

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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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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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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Menopause01:28

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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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Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
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Preparation of Mitochondria from Ovarian Cancer Tissues and Control Ovarian Tissues for Quantitative Proteomics Analysis
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Mitochondrial dysfunction and ovarian aging.

Tianren Wang1, Man Zhang1, Zongliang Jiang1

  • 1Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA.

American Journal of Reproductive Immunology (New York, N.Y. : 1989)
|February 15, 2017
PubMed
Summary
This summary is machine-generated.

Mitochondrial dysfunction is linked to ovarian aging. Researchers are exploring mitochondrial DNA copy number for embryo viability and mitochondrial therapies for ovarian function.", Enhanced_Abstract=default_api.SeocontentEnhancedAbstract(Area_of_Science=[

Keywords:
agingmitochondriaovaryreproduction

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Area of Science:

  • Cellular Biology and Reproductive Medicine
  • Mitochondrial Biology and Aging

Background:

  • Mitochondria, crucial for cellular energy, are implicated in cellular senescence and ovarian aging.
  • Mitochondrial dysfunction is a key factor in the aging process of ovarian cells.

Purpose of the Study:

  • To investigate mitochondrial DNA (mtDNA) copy number as a biomarker for embryo viability.
  • To explore the therapeutic potential of mitochondrial nutrients and autologous mitochondrial transfer for ovarian function.

Main Methods:

  • Analysis of mitochondrial DNA (mtDNA) copy number.
  • Evaluation of mitochondrial nutrients and autologous mitochondrial transfer in preclinical or clinical models (details not specified in abstract).

Main Results:

  • Mitochondrial DNA copy number shows potential as a biomarker for assessing embryo viability.
  • Mitochondrial-based interventions are being explored as treatments for diminished ovarian function.

Conclusions:

  • Mitochondrial health is intrinsically linked to ovarian aging and reproductive potential.
  • Targeting mitochondria offers promising avenues for improving embryo selection and treating ovarian aging.