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Related Concept Videos

Aging01:26

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
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Evaluation of the Storage Stability of Extracellular Vesicles
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Extracellular vesicles and aging.

Paul D Robbins1

  • 1Department of Molecular Medicine and the Center on Aging, the Scripps Research Institute, Jupiter, Florida, USA.

Stem Cell Investigation
|January 24, 2018
PubMed
Summary
This summary is machine-generated.

Extracellular vesicles (EVs) play crucial roles in aging, influencing tissue homeostasis and healthspan. Research explores their potential as biomarkers and therapeutic agents for age-related diseases.

Keywords:
Agingextracellular vesicles (EVs)mesenchymal stem cells (MSCs)

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Area of Science:

  • Gerontology and regenerative medicine.
  • Cell biology and extracellular vesicle research.

Background:

  • Aging is associated with chronic diseases, increasing healthcare burdens.
  • Both cell-autonomous and cell non-autonomous mechanisms drive aging.
  • Senescent cells and their secreted factors contribute to aging and tissue dysfunction.

Purpose of the Study:

  • To review the multifaceted roles of extracellular vesicles (EVs) in the aging process.
  • To explore the therapeutic potential of EVs for extending healthspan.
  • To discuss the utility of circulating EVs as biomarkers of unhealthy aging.

Main Methods:

  • Review of existing literature on EVs, aging, and senescence.
  • Analysis of evidence from studies on heterochronic parabiosis and plasma transfer.
  • Examination of the composition and function of EVs released by senescent cells.

Main Results:

  • EVs are implicated in modulating immune responses, angiogenesis, and tissue regeneration.
  • Senescent cells release EVs that may exacerbate aging.
  • EVs from progenitor cells show potential for promoting tissue repair.

Conclusions:

  • EVs are critical mediators of cell non-autonomous aging mechanisms.
  • Stem cell-derived EVs offer promising therapeutic avenues for healthspan extension.
  • Circulating EVs may serve as valuable biomarkers for assessing aging health.