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ATP, P2X receptors and pain pathways.

Y Ding1, P Cesare, L Drew

  • 1Department of Biology, University College, WC1E 6BT, London, UK.

Journal of the Autonomic Nervous System
|June 28, 2000
PubMed
Summary

Adenosine triphosphate (ATP) activates P2X receptors on sensory neurons, contributing to pain. The P2X3 receptor subtype is particularly important in pain pathways and glutamate release.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Pain Research

Background:

  • The purinergic hypothesis proposed a role for ATP in pain.
  • Distinct P2X and P2Y purinergic receptor subtypes have been identified.
  • ATP affects peripheral sensory neurons via these receptors.

Purpose of the Study:

  • To review the role of ATP in pain induction.
  • To discuss the action of ATP on peripheral P2X receptors.
  • To highlight the significance of the P2X3 receptor in pain pathways.

Main Methods:

  • Review of human psychophysical experiments.
  • Analysis of molecular cloning studies.
  • Examination of research on P2X receptor subtypes.

Main Results:

  • P2X3 receptors are highly expressed by nociceptive sensory neurons.
  • ATP's action on P2X receptors contributes to nociception.
  • Evidence suggests a presynaptic role for P2X receptors in regulating glutamate release.

Conclusions:

  • ATP plays a significant role in pain induction through peripheral P2X receptors.
  • The P2X3 receptor is a key player in pain signaling.
  • Understanding these pathways is crucial for pain management.

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