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Related Experiment Videos

Ca2+ waves in astrocytes.

A H Cornell-Bell1, S M Finkbeiner

  • 1Department of Neurology, Yale School of Medicine, West Haven, Connecticut.

Cell Calcium
|February 1, 1991
PubMed
Summary
This summary is machine-generated.

Astrocytes, a type of glial cell, exhibit neurotransmitter-triggered signaling, particularly calcium (Ca2+) changes. These signaling events can propagate as waves within and between astrocytes, suggesting a role in long-range glial communication.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Glial Cell Biology

Background:

  • Glial cells are the most abundant cells in the central nervous system.
  • Astrocytes, a type of glial cell, are crucial for brain development and function.
  • Astrocytes exhibit neurotransmitter-triggered signaling, suggesting a computational role.

Purpose of the Study:

  • To review the role of astrocytes in the central nervous system.
  • To emphasize receptor-mediated calcium (Ca2+) physiology in astrocytes.
  • To discuss astrocyte signaling, including intracellular and intercellular Ca2+ waves.

Main Methods:

  • Review of existing literature on astrocyte signaling.
  • Emphasis on receptor-mediated Ca2+ physiology.
  • Presentation of experimental results using specific glutamate receptor agonists.

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Main Results:

  • Glutamate induces various intracellular Ca2+ changes in astrocytes, including spikes and oscillations.
  • Ca2+ signals can spread as waves within single astrocytes.
  • Astrocyte networks support intercellular Ca2+ waves propagating over long distances.
  • Evidence for additional forms of intercellular signaling was presented.

Conclusions:

  • Astrocytes play a significant role in central nervous system function through Ca2+ signaling.
  • Intercellular Ca2+ waves in astrocytes represent a form of long-range glial communication.
  • Further research is needed to elucidate the functions of this long-range glial signaling system.