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Patch Clamp01:18

Patch Clamp

Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...

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Patch Clamp Recordings on Intact Dorsal Root Ganglia from Adult Rats
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Patch clamp recording from enteric neurons in situ.

Nancy Osorio1, Patrick Delmas

  • 1Centre de Recherche en Neurobiologie et Neurophysiologie de Marseille, Université de la Méditerranée, Marseille, France.

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|January 8, 2011
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Summary

Researchers developed a new patch-clamp technique for recording from enteric neurons in the mouse duodenum. This method allows studying ion channels in their native environment, advancing neurogenic disorder research.

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Area of Science:

  • Neuroscience
  • Gastroenterology
  • Electrophysiology

Background:

  • Enteric neurons are crucial for intestinal motility and treating neurogenic disorders.
  • Traditional methods limit the study of enteric neurons, hindering research.
  • Patch-clamp recording offers detailed insights into neuronal function.

Purpose of the Study:

  • To establish a novel patch-clamp recording technique for intact myenteric plexus neurons.
  • To enable the study of ion channel properties in native enteric neurons.
  • To facilitate research into neurogenic gut disorders.

Main Methods:

  • Dissection of the mouse duodenum to expose the myenteric plexus on the longitudinal muscle.
  • Proteolytic treatment of ganglia and gentle cell-surface cleaning for gigaseal formation.
  • Application of patch-clamp recording to isolated myenteric neurons.

Main Results:

  • Successfully developed the first patch-clamp technique for recording from intact myenteric plexus neurons.
  • Achieved stable gigaseal formation on myenteric neurons.
  • The protocol is efficient, completable within approximately 4 hours.

Conclusions:

  • This technique provides unprecedented access to study enteric neurons in their native environment.
  • It overcomes previous limitations of intracellular microelectrode recordings and cultured neurons.
  • This method will advance our understanding of intestinal motility and neurogenic disorders.