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Updated: Jun 6, 2025
Intravital Imaging of Axonal Interactions with Microglia and Macrophages in a Mouse Dorsal Column Crush Injury
Published on: November 23, 2014
Interaction of microglia with the microenvironment in spinal cord injury
A V Timofeeva1, E R Akhmetzyanova1, A A Rizvanov2
1Kazan (Volga Region) Federal University, Kazan, Russia.
Abstract:
This article discusses the peculiarities of microglia behaviour and their interaction with other cells of the central nervous system (CNS) during neural tissue injury with a focus on spinal cord injury (SCI). Taking into account the plasticity of microglia, the influence of the microenvironment should be taken into account to establish the mechanisms determining the polarization pathways of these cells. Determination of the system of microglia interactions with other CNS cells during injury will reveal the patterns of post-traumatic microglia responses, in particular, determining both pro-inflammatory and anti-inflammatory responses. This review compiles information on changes in microglia activation, migration and phagocytosis, as well as their reciprocal effects on other CNS cells, such as neurons, astrocytes and oligodendrocytes, in the background of SCI. The information contained in this article may be of interest not only to scientists studying traumatic injuries of the central nervous system, but also to specialists in the field of studying and treating neurodegenerative diseases, since the mechanisms occurring in the injured spinal cord may also be characteristic of pathological events in degenerative processes.
Insights
Microglia, the immune cells of the central nervous system (CNS), exhibit complex behaviors and interactions following spinal cord injury (SCI). Understanding their plasticity and microenvironment is key to modulating their pro- and anti-inflammatory responses for potential therapeutic strategies.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglia are key immune cells in the central nervous system (CNS).
- Neural tissue injury, particularly spinal cord injury (SCI), triggers complex microglial responses.
- The microenvironment significantly influences microglial behavior and polarization.
Purpose of the Study:
- To review the behavior and interactions of microglia in the context of CNS injury, focusing on SCI.
- To elucidate the mechanisms behind microglial polarization pathways.
- To understand the reciprocal effects of microglia on other CNS cells post-injury.
Main Methods:
- Literature review and synthesis of existing research on microglia in SCI.
- Analysis of microglial activation, migration, and phagocytosis dynamics.
- Examination of microglia interactions with neurons, astrocytes, and oligodendrocytes.
Main Results:
- Microglia exhibit distinct activation, migration, and phagocytic patterns following SCI.
- Microglial responses can be both pro-inflammatory and anti-inflammatory, influenced by the injury microenvironment.
- These microglial activities reciprocally affect neurons, astrocytes, and oligodendrocytes.
Conclusions:
- Understanding microglial plasticity and microenvironment is crucial for deciphering post-traumatic responses in SCI.
- Microglial mechanisms in SCI share similarities with pathological processes in neurodegenerative diseases.
- This knowledge may inform therapeutic strategies for both traumatic CNS injuries and neurodegenerative conditions.
