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Central acute pain mechanisms

A H Dickenson1

  • 1Department of Pharmacology, University College, London, UK.

Annals of Medicine
|April 1, 1995
PubMed
Summary
This summary is machine-generated.

Acute pain involves spinal cord events that change rapidly. This plasticity, occurring within hours, impacts pain treatment by altering pain transmission and modulation.

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Area of Science:

  • Neuroscience
  • Pain Research
  • Spinal Cord Physiology

Background:

  • Acute pain transmission and modulation are dynamic processes.
  • The distinction between acute and chronic pain can be blurred due to rapid neural changes.
  • Brief pain stimuli are typically managed simply, but sustained stimuli induce complex spinal cord alterations.

Purpose of the Study:

  • To examine the spinal cord events underlying acute pain.
  • To understand the plasticity of pain pathways in response to stimuli.
  • To highlight the implications of these changes for acute pain management.

Main Methods:

  • Review of neurobiological events in the spinal cord during acute pain.
  • Analysis of cellular and molecular changes following C-fibre stimulation.

Related Experiment Videos

  • Examination of alterations in neurotransmitter systems and gene expression.

    • Main Results:

    • Sustained C-fibre stimulation releases peptides and activates spinal N-methyl-D-aspartate (NMDA) receptors.
    • Nitric oxide production increases within seconds of stimulation.
    • Gene induction and significant shifts in pain-related pharmacological systems occur within hours.

    Conclusions:

    • Rapid spinal cord plasticity occurs during acute pain, even within hours.
    • These dynamic changes complicate pharmacological treatments for acute pain.
    • Understanding this plasticity is crucial for developing effective pain management strategies.