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Endothelin and post-ganglionic sympathetic neurons.

D H Damon1

  • 1Department of Pharmacology, University of Vermont, Burlington 05405, USA. ddamon@zoo.uvm.edu

Clinical and Experimental Pharmacology & Physiology
|January 8, 2000
PubMed
Summary

Endothelin (ET) influences sympathetic neuron development by promoting survival and differentiation. This peptide modulates neurotransmitter release and nerve growth factor activity in developing neurons.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Biology

Background:

  • Endothelin (ET) is a peptide with known vasoconstrictive properties.
  • The role of ET in neuronal development, particularly in the sympathetic nervous system, is not fully elucidated.

Purpose of the Study:

  • To investigate the role of endothelin (ET) as a mediator and modulator of post-ganglionic sympathetic neuronal development.
  • To determine if post-ganglionic sympathetic neurons express functional ET receptors.

Main Methods:

  • Culturing post-ganglionic sympathetic neurons.
  • Assessing neuronal survival and differentiation in response to ET.
  • Measuring neurotransmitter release and nerve growth factor activity.

Main Results:

  • Endothelin (ET) is produced by post-ganglionic neurons and adjacent cells.
  • Post-ganglionic sympathetic neurons express functional ET receptors.
  • ET promotes survival and modulates morphological and biochemical differentiation of cultured sympathetic neurons.
  • ET enhances nerve growth factor activity and modulates neurotransmitter release.

Conclusions:

  • Endothelin (ET) plays a significant role in the development of post-ganglionic sympathetic neurons.
  • ET acts as both a mediator and modulator, influencing neuronal survival, differentiation, and function.
  • These findings suggest ET as a potential therapeutic target for neurological disorders affecting the sympathetic nervous system.

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