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Related Concept Videos

Glial Cells01:04

Glial Cells

Overview
Excitatory and Inhibitory Effects of Neurotransmitters01:29

Excitatory and Inhibitory Effects of Neurotransmitters

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 specific...
Integration of Synaptic Events01:28

Integration of Synaptic Events

Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
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...
Neuronal Communication01:28

Neuronal Communication

Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...
Gut-Brain Axis01:22

Gut-Brain Axis

The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...

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Related Experiment Video

Updated: Jul 2, 2026

Imaging Analysis of Neuron to Glia Interaction in Microfluidic Culture Platform (MCP)-based Neuronal Axon and Glia Co-culture System
09:34

Imaging Analysis of Neuron to Glia Interaction in Microfluidic Culture Platform (MCP)-based Neuronal Axon and Glia Co-culture System

Published on: October 14, 2012

Neuronal-glial interactions and behaviour.

P R Laming1, H Kimelberg, S Robinson

  • 1School of Biology and Biochemistry, Medical Biology Centre, 97 Lisburn Road, Belfast, UK. p.laming@qub.ac.uk

Neuroscience and Biobehavioral Reviews
|April 27, 2000
PubMed
Summary
This summary is machine-generated.

Glial cells and neurons dynamically interact, with glia supporting neuronal development and function. Astrocytes regulate neuronal communication and energy metabolism, crucial for behavior and learning.

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Imaging Analysis of Neuron to Glia Interaction in Microfluidic Culture Platform (MCP)-based Neuronal Axon and Glia Co-culture System
09:34

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Published on: October 14, 2012

Improved 3D Hydrogel Cultures of Primary Glial Cells for In Vitro Modelling of Neuroinflammation
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Published on: July 26, 2024

Area of Science:

  • Neuroscience
  • Cell Biology
  • Neurophysiology

Background:

  • Neurons and glia exhibit dynamic interactions essential for brain function and behavior.
  • Evolutionary history shows increasingly complex associations between neurons and glia.
  • Radial glia guide neuronal migration, while astrocytes refine synaptic connections.

Purpose of the Study:

  • To elucidate the dynamic interplay between glial cells and neurons in information processing and behavior.
  • To investigate the role of astrocytes in neuronal metabolism and communication.
  • To explore the plasticity of glial cells in response to physiological states and learning.

Main Methods:

  • Electrophysiological recordings to measure glial cell responses to neuronal activity (e.g., potassium fluctuations).
  • Biochemical assays to assess metabolic pathways (glycogenolysis, oxidative metabolism) in astrocytes.
  • Hormonal and neurotransmitter manipulations to study glial responses.
  • Histological and imaging techniques to observe structural changes in astrocytes.

Main Results:

  • Glial cells, particularly astrocytes, are depolarized by elevated potassium, generating slow potential shifts linked to arousal and learning.
  • Astrocytes fuel neuronal metabolism via lactate/pyruvate derived from glycolysis, stimulated by glutamate and noradrenaline.
  • Astrocytes regulate neuronal communication through physical interactions and by supplying essential molecules like glutamine.
  • Neurotransmitters like serotonin and hormones influence astrocytic function and structure, impacting neuronal activity.

Conclusions:

  • Glial cells are integral to neuronal function, actively participating in information processing, energy supply, and synaptic regulation.
  • Astrocytic metabolic and structural plasticity are critical for adaptive behaviors, learning, and responses to physiological demands.
  • The dynamic neuron-glia crosstalk is fundamental to brain evolution and function.