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[Neuropathic pain decoded by microglial heterogeneity]

Makoto Tsuda1, Keita Kohno1

  • 1Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University.

Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
|September 6, 2023
PubMed

Insights

Microglia in the spinal cord play dynamic roles in neuropathic pain. Specific CD11c-positive microglia are crucial for pain remission, highlighting cellular heterogeneity in neurological disease.

Area of Science:

  • Neuroscience
  • Immunology
  • Pain Research

Context:

  • Neuropathic pain, a chronic pain condition, arises from damage to the somatosensory system.
  • Spinal cord microglia are known to contribute to neuropathic pain onset and maintenance.
  • The heterogeneity of microglial function across different pain phases is increasingly recognized.

Purpose:

  • To investigate the dynamic roles of microglia in the onset, maintenance, and remission phases of neuropathic pain.
  • To characterize the function of CD11c-positive microglia during neuropathic pain remission.

Summary:

  • Microglia in the spinal cord undergo significant changes in morphology, gene expression, and function following nerve damage, contributing to neuropathic pain.
  • A distinct subset, CD11c-positive microglia, emerges during the remission phase and is essential for spontaneous pain remission and maintaining the pain-free state.
  • These findings reveal that microglial roles in neuropathic pain are phase-dependent and not monolithic.

Impact:

  • Suggests that targeting specific microglial subsets could offer novel therapeutic strategies for neuropathic pain.
  • Highlights the importance of understanding microglial heterogeneity for deciphering complex neurological diseases.
  • Provides a foundation for developing new approaches to treat chronic pain and related neurological disorders.

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