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Related Concept Videos

Nervous Tissue: Glial Cells01:31

Nervous Tissue: Glial Cells

Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial cells that interact...
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Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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...
Nervous Tissue: Myelin01:25

Nervous Tissue: Myelin

The myelin sheath is a multilayered lipid and protein covering that insulates the axon of a neuron, enhancing the speed of nerve impulse conduction. Axons without this sheath are referred to as unmyelinated. Two types of neuroglia, Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS) are responsible for producing myelin sheaths.
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Neurulation01:30

Neurulation

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the anterior...

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Updated: Jul 10, 2026

Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration
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Published on: January 10, 2018

Glia orchestrate neural circuit development.

Kristina Sakers1, Patrick W Sheehan2, Wendy Xin3

  • 1Department of Cell Biology, Duke University Medical Center, Durham, NC, USA; Howard Hughes Medical Institute, Duke University Medical Center, Durham, NC, USA.

Developmental Cell
|July 8, 2026
PubMed
Summary
This summary is machine-generated.

Glial cells, including astrocytes, oligodendrocytes, and microglia, actively regulate neural circuit development. Their coordinated communication is crucial for synapse formation, refinement, and stabilization, with disruptions linked to neurodevelopmental disorders.

Keywords:
astrocytecritical periodgliamicrogliaoligodendrocyteplasticitysynapse

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Glial cells were historically viewed as passive support cells in the central nervous system.
  • Emerging evidence highlights glial cells as active participants in neural circuit development.
  • Astrocytes, oligodendrocyte lineage cells, and microglia play critical roles.

Purpose of the Study:

  • To review the multifaceted functions of glial cells in instructing neural circuit formation and maturation.
  • To synthesize evidence across developmental stages and species (vertebrate and invertebrate).
  • To explore the role of glia-glia communication in circuit development.

Main Methods:

  • Literature review and synthesis of existing research.
  • Analysis of studies on synapse formation, refinement, plasticity, and stabilization.
  • Examination of glia-glia communication mechanisms.

Main Results:

  • Glial cells actively instruct synapse formation, refinement, plasticity, and stabilization.
  • Glia-glia communication provides an additional layer of developmental control.
  • Coordinated glial activity shapes specific neural wiring programs.

Conclusions:

  • Glial cells cooperatively orchestrate neural circuit development through instruction, stabilization, and elimination of connections.
  • Disruptions in glial-neuronal or glia-glia interactions contribute to neurodevelopmental and neuropsychiatric diseases.
  • Understanding glial roles is essential for addressing neurological disorders.