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Related Concept Videos

Autophagy01:27

Autophagy

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.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

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.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Autophagic Cell Death01:18

Autophagic Cell Death

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.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Aging01:26

Aging

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.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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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Related Experiment Video

Updated: May 15, 2026

Assessing Lysosomal Alkalinization in the Intestine of Live Caenorhabditis elegans
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Assessing Lysosomal Alkalinization in the Intestine of Live Caenorhabditis elegans

Published on: April 13, 2018

[Aging and autophagy].

Pham Nguyen Quy1, Noboru Mizushima

  • 1Department of Physiology and Cell Biology, Tokyo Medical and Dental University, Japan.

Clinical Calcium
|December 27, 2012
PubMed
Summary
This summary is machine-generated.

Autophagy, a cellular clearance process, declines with age, contributing to aging-related diseases. Enhancing autophagy may promote longevity and healthspan.

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Last Updated: May 15, 2026

Assessing Lysosomal Alkalinization in the Intestine of Live Caenorhabditis elegans
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Published on: April 13, 2018

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Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Gerontology

Context:

  • Autophagy is a fundamental intracellular degradation pathway conserved across species.
  • Declining autophagic activity is a hallmark of aging in multiple tissues.
  • Autophagy is critical for cellular homeostasis and waste removal.

Purpose:

  • To review the scientific evidence linking autophagy and aging.
  • To highlight the role of autophagy in age-related cellular dysfunction.
  • To explore the potential of modulating autophagy for anti-aging interventions.

Summary:

  • Autophagy efficiency decreases with age, impacting cellular health.
  • Genetic disruption of autophagy accelerates aging phenotypes and associated diseases.
  • Interventions that extend lifespan often involve upregulation of autophagy.

Impact:

  • Understanding the autophagy-aging connection can reveal mechanisms of aging.
  • Targeting autophagy may offer novel therapeutic strategies for age-related diseases.
  • This review consolidates current knowledge on autophagy's role in aging research.