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Glial Cells01:04

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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of...
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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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Neuron-Glia Interactions in Neurodevelopmental Disorders.

Yoo Sung Kim1, Juwon Choi1, Bo-Eun Yoon1,2

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|September 30, 2020
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Glial cells are crucial for synapse health in the central nervous system (CNS). Impaired neuron-glia interactions may drive neurodevelopmental disorders, highlighting glial cells as potential therapeutic targets.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Neuroimmunology

Background:

  • Synaptic dysfunction is a key feature of psychiatric diseases.
  • Glial cells play vital roles in synapse formation, development, plasticity, and homeostasis.
  • Glial cells regulate neuronal activity in the central nervous system (CNS) through gliotransmission.

Purpose of the Study:

  • To review the role of glial cells in synaptic function.
  • To propose that impaired neuron-glia interactions contribute to neurodevelopmental disorders.
  • To highlight glial cells as potential therapeutic targets for these conditions.

Main Methods:

  • This is a review article, synthesizing existing research.
  • Analysis of literature on glial cell function in synaptic plasticity and CNS disorders.
  • Focus on mechanisms of neuron-glia communication.

Main Results:

  • Glial cells modulate neuronal activity via various molecular mechanisms (ion channels, receptors, transporters).
  • These mechanisms are essential for maintaining synaptic homeostasis and CNS physiological function.
  • Dysfunction in these neuron-glia interactions is implicated in disease pathogenesis.

Conclusions:

  • Impaired neuron-glia interactions are proposed as a contributing factor to neurodevelopmental disorders.
  • Understanding these interactions is critical for developing novel therapeutic strategies.
  • Targeting glial cell function offers a promising avenue for treating neurodevelopmental disorders.