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Related Concept Videos

Nerve Supply of the GI Tract01:27

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The neuronal supply to the gastrointestinal (GI) tract is essential for regulating various functions, including digestion, absorption, and movement of food. This intricate network of nerves is known as the enteric nervous system (ENS), often referred to as the "second brain" of the body.
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Enteric Nervous System: Regulation of GI Motor Activity01:11

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The Enteric Nervous System (ENS) plays a pivotal role in regulating gastrointestinal or GI motor activity. This complex network of nerves, deeply embedded within the gut wall, responds to changes in the gut environment and receives input from both the autonomic nervous system and the central nervous system. By doing so, the ENS operates various programs tailored to the body's nutritional status and needs.
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The gastrointestinal tract, responsible for the digestion and absorption of nutrients, is safeguarded by the intestinal barrier, which consists of secretory, physical, and immune components. At the forefront is the secretory barrier, composed of essential elements such as mucus, gut microbiota, and defense proteins. They collaborate to break down food particles, facilitate nutrient absorption, and maintain optimal gut health. These secretory components ensure the smooth functioning of the...
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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).
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Related Experiment Video

Updated: May 6, 2026

In Situ Ca2+ Imaging of the Enteric Nervous System
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Imaging neuron-glia interactions in the enteric nervous system.

Werend Boesmans1, Michiel A Martens, Nathalie Weltens

  • 1Laboratory for Enteric NeuroScience (LENS), Translational Research Center for GastroIntestinal Disorders, University of Leuven , Leuven, Belgium ; Translational Research Center for GastroIntestinal Disorders (TARGID), Department of Clinical and Experimental Medicine, University of Leuven , Leuven, Belgium.

Frontiers in Cellular Neuroscience
|October 25, 2013
PubMed
Summary

Investigating neuron-glia communication in the enteric nervous system (ENS) is challenging. This report details live imaging methods to better understand glial cells and neuron interactions in the gut.

Keywords:
GCaMPcalciumenteric gliaenteric neuronsynaptic

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Area of Science:

  • Neuroscience
  • Gastroenterology
  • Cell Biology

Background:

  • The enteric nervous system (ENS), a semi-autonomous neural network in the gut, comprises neurons and enteric glial cells.
  • Enteric glial cells, similar to astrocytes, interact closely with enteric neurons, influencing digestive functions.
  • Studying neuron-glia crosstalk in the ENS is difficult due to the gut's unique environment and imaging challenges.

Purpose of the Study:

  • To present technical approaches for live microscopic imaging of neuron-glia interactions within the ENS.
  • To address the challenges in distinguishing glial cell activity from neuronal activity in live imaging studies.
  • To explore possibilities for studying neuron-glia crosstalk in both animal models and human tissue.

Main Methods:

  • Review of live imaging techniques, focusing on calcium imaging limitations.
  • Discussion of strategies to overcome challenges in recording enteric glial cell activity.
  • Application of methods to animal models and human gastrointestinal tissue samples.

Main Results:

  • Calcium imaging often leads to ambiguous results, making it hard to differentiate glial and neuronal signals.
  • The technical report outlines specific approaches to improve the resolution and accuracy of live imaging in the ENS.
  • The described methods aim to provide clearer insights into the functional roles of enteric glia.

Conclusions:

  • Accurate live imaging of enteric glial cell activity and neuron-glia crosstalk is crucial for understanding ENS function.
  • Overcoming current technical limitations in live microscopy is essential for advancing research in neurogastroenterology.
  • The proposed methods offer a pathway to better elucidate the complex communication networks within the gut's nervous system.