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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: Feb 19, 2026

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia

Published on: November 14, 2020

Glial function (and dysfunction) in the normal & ischemic brain.

Shino D Magaki¹, Christopher K Williams², Harry V Vinters³

¹Department of Pathology, Loma Linda University Medical Center, Loma Linda, CA, USA; Department of Pathology & Laboratory Medicine (Neuropathology), David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1732, USA.

Neuropharmacology

|November 11, 2017

Summary

This summary is machine-generated.

Astrocytes, the most abundant brain cells, are heterogeneous and vital for CNS functions. Following injury, they form scars (astrogliosis), interacting with other glial cells.

Keywords:

Astrocytes Brain injury - responses Intracerebral hemorrhage Ischemia Microglia Oligodendroglia

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Related Experiment Videos

Last Updated: Feb 19, 2026

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia

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Published on: November 14, 2020

Dissection and Isolation of Murine Glia from Multiple Central Nervous System Regions

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Published on: June 4, 2020

Monitoring Astrocyte Reactivity and Proliferation in Vitro Under Ischemic-Like Conditions

Monitoring Astrocyte Reactivity and Proliferation in Vitro Under Ischemic-Like Conditions

Published on: October 21, 2017

Area of Science:

Neuroscience
Cell Biology

Background:

Astrocytes are the most numerous cells in the central nervous system (CNS).
Previously thought to be uniform, astrocytes exhibit diverse structures and functions.
They play critical roles in maintaining CNS homeostasis and function.

Purpose of the Study:

To review the heterogeneity of astrocytes in structure and function.
To highlight the role of astrocytes in CNS functions, including ion balance, neurovascular unit integrity, neurotransmitter regulation, and metabolism.
To discuss astrogliosis following CNS injury and astrocyte interactions with other glial cells.

Main Methods:

Review of existing literature on astrocyte biology and function.
Discussion of astrogliosis as a response to CNS injury, typically identified by glial fibrillary acidic protein (GFAP) immunohistochemistry.
Exploration of astrocyte interactions with microglia and oligodendroglia.

Main Results:

Astrocytes are functionally and structurally heterogeneous across the CNS.
They are crucial for maintaining the blood-brain barrier, regulating neurotransmitters, and supporting metabolism.
Astrogliosis, characterized by GFAP expression, is a hallmark of CNS injury, involving complex interactions with other glial cells.

Conclusions:

Astrocytes are diverse and essential for normal brain function and injury response.
Understanding astrocyte heterogeneity and glial interactions is key to developing therapeutic strategies for CNS disorders like cerebral ischemia.