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Updated: Apr 19, 2026
Characterization and Isolation of Mouse Primary Microglia by Density Gradient Centrifugation
Published on: February 16, 2018
Mechanisms and potential therapeutic applications of microglial activation after brain injury
Jong-Youl Kim1, Nuri Kim, Midori A Yenari
1Department of Neurology, San Francisco Veterans Affairs Medical Center, University of California, San Francisco, San Francisco, CA, USA.
Abstract:
As the resident immune cells of the central nervous system, microglia rapidly respond to brain insults, including stroke and traumatic brain injury. Microglial activation plays a major role in neuronal cell damage and death by releasing a variety of inflammatory and neurotoxic mediators. Their activation is an early response that may exacerbate brain injury and many other stressors, especially in the acute stages, but are also essential to brain recovery and repair. The full range of microglial activities is still not completely understood, but there is accumulating knowledge about their role following brain injury. We review recent progress related to the deleterious and beneficial effects of microglia in the setting of acute neurological insults and the current literature surrounding pharmacological interventions for intervention.
Insights
Microglia, the brain's immune cells, can harm or help during acute neurological insults like stroke. Understanding their dual role is key for developing new treatments to improve brain recovery.
Area of Science:
- Neuroscience
- Immunology
- Neurology
Background:
- Microglia are the primary immune cells in the central nervous system.
- They rapidly activate in response to brain injuries such as stroke and traumatic brain injury.
- Microglial activation contributes to neuronal damage via inflammatory mediators but also aids in recovery.
Purpose of the Study:
- To review the dual role of microglia in acute neurological insults.
- To summarize current knowledge on microglial functions in brain injury.
- To discuss pharmacological interventions targeting microglial activity.
Main Methods:
- Literature review of recent scientific progress.
- Analysis of studies on microglial effects in acute neurological insults.
- Examination of research on pharmacological interventions.
Main Results:
- Microglial activation has both detrimental and beneficial effects on the brain during acute injury.
- These cells release inflammatory and neurotoxic mediators contributing to cell death.
- Conversely, microglia are essential for the processes of brain repair and recovery.
Conclusions:
- Microglia exhibit a complex, context-dependent role in acute neurological insults.
- Further research is needed to fully elucidate their functions.
- Targeting microglial pathways offers potential therapeutic strategies for brain injury.
