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Astrocytes, from brain glue to communication elements: the revolution continues
Andrea Volterra1, Jacopo Meldolesi
1Department of Cell Biology and Morphology, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland. andrea.volterra@unil.ch
Nature Reviews. Neuroscience
|July 19, 2005
Summary
Astrocytes, once viewed as mere support cells, are now recognized as active brain communicators. These cells release signaling molecules, influencing brain function and disease.
Area of Science:
- Neuroscience
- Cell Biology
- Glial Cell Research
Background:
- Historically, astrocytes were considered non-excitable glial cells.
- Recent research has revealed astrocytes possess active properties and distinct territorial organization.
Purpose of the Study:
- To re-evaluate the role of astrocytes in brain function.
- To highlight the active properties and communication functions of astrocytes.
Main Methods:
- Review of recent scientific literature.
- Analysis of experimental findings on astrocyte signaling.
Main Results:
- Astrocytes exhibit regulated release of gliotransmitters, including glutamate.
- Astrocytes act as local communication elements, bridging neuronal and vascular networks.
- Evidence suggests astrocytes play roles in normal physiology and disease.
Conclusions:
- Astrocytes are dynamic participants in brain communication, not just passive support cells.
- Understanding astrocyte function is crucial for both normal brain activity and neurological disease research.