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Related Concept Videos

Autophagy01:27

Autophagy

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
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Delivery Pathways to the Lysosome01:36

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Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
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Autophagic Cell Death01:18

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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
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Mitochondria01:37

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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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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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The Effect of Aging on Tissues01:19

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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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In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells
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Autophagy, Aging, and Longevity.

Li Luo1, Zheng-Hong Qin2

  • 1School of Physical Education and Sports Science, Soochow University, Suzhou, 215021, China.

Advances in Experimental Medicine and Biology
|November 29, 2019
PubMed
Summary
This summary is machine-generated.

Autophagy, a cellular process, is crucial for maintaining health during aging. Enhancing autophagy can extend lifespan and prevent age-related diseases by clearing cellular waste.

Keywords:
AgingAutophagyLongevity

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Area of Science:

  • Cellular Biology
  • Aging Research
  • Molecular Biology

Background:

  • Autophagy is a fundamental cellular process responsible for degrading and recycling intracellular components via lysosomes.
  • This process is vital for maintaining cellular and organismal homeostasis, including energy balance and organelle renewal.
  • Dysfunctional autophagy is increasingly linked to aging and the pathogenesis of age-related diseases, particularly neurodegeneration.

Purpose of the Study:

  • To investigate the role of autophagy in the aging process.
  • To explore the potential of modulating autophagy to combat aging and age-related pathologies.
  • To highlight the significance of autophagy in preventing the accumulation of cellular damage associated with aging.

Main Methods:

  • This study is a review and synthesis of existing literature on autophagy and aging.
  • It analyzes evidence linking autophagy to lifespan, healthspan, and age-related diseases.
  • The focus is on understanding the molecular mechanisms involved in autophagy's role in aging.

Main Results:

  • Enhanced autophagy activity is associated with delayed aging and extended lifespan in various model organisms.
  • Impaired autophagy leads to the accumulation of misfolded and mutant proteins, a hallmark of neurodegenerative diseases.
  • Autophagy dysfunction contributes to cellular senescence and the overall aging phenotype.

Conclusions:

  • Autophagy plays a critical role in healthy aging and longevity.
  • Targeting autophagy presents a promising therapeutic strategy for extending lifespan and improving health in elderly individuals.
  • Further research into autophagy modulation could lead to novel interventions for age-related diseases.