The neuropathic pain triad: neurons, immune cells and glia

Nat Neurosci. 2007 Nov;10(11):1361-8. doi: 10.1038/nn1992.


Nociceptive pain results from the detection of intense or noxious stimuli by specialized high-threshold sensory neurons (nociceptors), a transfer of action potentials to the spinal cord, and onward transmission of the warning signal to the brain. In contrast, clinical pain such as pain after nerve injury (neuropathic pain) is characterized by pain in the absence of a stimulus and reduced nociceptive thresholds so that normally innocuous stimuli produce pain. The development of neuropathic pain involves not only neuronal pathways, but also Schwann cells, satellite cells in the dorsal root ganglia, components of the peripheral immune system, spinal microglia and astrocytes. As we increasingly appreciate that neuropathic pain has many features of a neuroimmune disorder, immunosuppression and blockade of the reciprocal signaling pathways between neuronal and non-neuronal cells offer new opportunities for disease modification and more successful management of pain.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Animals
  • Humans
  • Immune System*
  • Models, Biological
  • Neuralgia* / immunology
  • Neuralgia* / pathology
  • Neuralgia* / physiopathology
  • Neuroglia / physiology*
  • Neurons / physiology*
  • Peripheral Nervous System* / immunology
  • Peripheral Nervous System* / pathology
  • Peripheral Nervous System* / physiology