Related Experiment Video

Updated: Oct 29, 2025

Identifying Microglia and Peripheral Infiltrating Macrophages in the Injured Spinal Cords Using Flow Cytometry
08:47

Identifying Microglia and Peripheral Infiltrating Macrophages in the Injured Spinal Cords Using Flow Cytometry

Published on: June 24, 2025

329

Macrophage phagocytosis after spinal cord injury: when friends become foes

Jana Van Broeckhoven1, Daniela Sommer1, Dearbhaile Dooley2,3

  • 1Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium.

Brain : a Journal of Neurology
|July 10, 2021
PubMed

Insights

Macrophages in spinal cord injury can aid recovery by clearing debris and promoting regeneration, but can also cause harm. Targeting their phagocytosis offers potential therapeutic strategies for neurological repair.

Area of Science:

  • Neuroscience
  • Immunology
  • Regenerative Medicine

Background:

  • Macrophages play a dual role following spinal cord injury (SCI), influencing both repair and damage.
  • Their phagocytic activity is critical for clearing cellular debris and myelin, but can also lead to detrimental effects.

Purpose of the Study:

  • To review the opposing roles of macrophage phagocytosis in SCI.
  • To discuss the therapeutic potential of modulating macrophage phagocytic function for SCI treatment.

Main Methods:

  • Literature review of studies investigating macrophage function in SCI.
  • Analysis of the mechanisms underlying beneficial and detrimental phagocytosis by macrophages.

Main Results:

  • Macrophages promote remyelination and axonal regeneration by clearing inhibitory myelin and debris.
  • Foamy macrophages, resulting from lipid dysregulation, adopt a pro-inflammatory phenotype, exacerbating neurological damage.
  • Myelin-activated macrophages contribute to axonal dieback and retraction.

Conclusions:

  • Macrophage phagocytosis in SCI presents both pro-regenerative and pro-degenerative consequences.
  • Targeting macrophage phagocytic capabilities may offer a promising therapeutic avenue for improving outcomes after spinal cord injury.
Keywords:
CNS traumaaxonal diebackfoam cellsphagocytosistechnical challenges

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