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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.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

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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.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
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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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Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
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Lysosomal Hydrolases01:22

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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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Neural Regulation01:37

Neural Regulation

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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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Updated: May 22, 2025

In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells
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How does autophagy impact neurological function?

Angeleen Fleming1,2,3, Ana Lopez1,2,3, Matea Rob1,3

  • 1Department of Medical Genetics, University of Cambridge, Cambridge Institute for Medical Research, Cambridge, UK.

The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry
|March 13, 2025
PubMed
Summary
This summary is machine-generated.

Autophagy is a cellular degradation process crucial for nervous system health. This review explores its vital roles in maintaining neuronal and glial function and links disrupted autophagy to neurologic diseases.

Keywords:
aggregatesautophagyglianeural stem cellneuroinflammationneuron

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Area of Science:

  • Cellular Biology
  • Neuroscience

Background:

  • Autophagy is a fundamental cellular process for degrading cytoplasmic components via the lysosome.
  • Macroautophagy involves capturing cellular waste in autophagosomes that fuse with lysosomes for degradation.
  • Disruptions in autophagy are implicated in the pathogenesis of various neurological disorders.

Purpose of the Study:

  • To provide a comprehensive overview of autophagy's functions within the central nervous system (CNS).
  • To highlight recent research advancements concerning the role of autophagy in maintaining nervous system health.

Main Methods:

  • This is a review article, synthesizing existing literature.
  • Focuses on macroautophagy as the primary mechanism of cellular degradation discussed.
  • Examines the implications of autophagy in neuronal and glial cells.

Main Results:

  • Autophagy plays a critical role in maintaining the homeostasis of neuronal and glial cells.
  • Dysfunctional autophagy contributes to the development and progression of neurological diseases.
  • The multifaceted roles of autophagy are essential for a healthy nervous system.

Conclusions:

  • Autophagy is indispensable for normal nervous system function.
  • Understanding autophagy mechanisms offers therapeutic potential for neurologic diseases.
  • Further research into CNS autophagy is warranted to elucidate its full impact.