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Updated: Jul 17, 2025
Three-dimensional Confocal Analysis of Microglia/macrophage Markers of Polarization in Experimental Brain Injury
Published on: September 4, 2013
Spatial and temporal mapping of neuron-microglia interaction modes in acute ischemic stroke
Xiaoke Dou1, Wei Ji2, Maosha Dai1
1Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China.
Abstract:
Ischemic stroke (IS) is a major cause of morbidity and mortality worldwide, accounting for 75-80% of all strokes. Under conditions of ischemia and hypoxia, neurons suffer damage or death, leading to a series of secondary immune reactions. Microglia, the earliest activated immune cells, can exert neurotoxic or neuroprotective effects on neurons through secretion of factors. There exists a complex interaction between neurons and microglia during this process. Moreover, the interaction between them becomes even more complex due to differences in the infarct area and reperfusion time. This review first elaborates on the differences in neuronal death modes between the ischemic core and penumbra, and then introduces the differences in microglial markers across different infarct areas with varying reperfusion time, indicating distinct functions. Finally, we focus on exploring the interaction modes between neurons and microglia in order to precisely target beneficial interactions and inhibit harmful ones, thus providing new therapeutic strategies for the treatment of IS.
Insights
Ischemic stroke (IS) involves complex neuron-microglia interactions. Understanding these interactions in different stroke areas and reperfusion times can lead to targeted therapies for IS.
Area of Science:
- Neuroscience
- Immunology
- Pathology
Background:
- Ischemic stroke (IS) is a leading cause of death and disability globally.
- Neuronal damage during ischemia and hypoxia triggers secondary immune responses, primarily involving microglia.
- Microglia exhibit dual roles, potentially causing neurotoxicity or providing neuroprotection.
Purpose of the Study:
- To review neuronal death modes in the ischemic core versus penumbra.
- To examine microglial marker variations in different infarct areas and reperfusion times.
- To explore neuron-microglia interaction mechanisms for therapeutic targeting in IS.
Main Methods:
- Literature review focusing on neuronal death mechanisms.
- Analysis of microglial markers in various ischemic stroke models.
- Synthesis of current knowledge on neuron-microglia communication.
Main Results:
- Distinct neuronal death pathways exist in the ischemic core and penumbra.
- Microglial markers and functions differ based on infarct location and reperfusion duration.
- Neuron-microglia interactions are complex and context-dependent.
Conclusions:
- Differentiating neuronal vulnerability and microglial responses is crucial for understanding IS.
- Targeting specific neuron-microglia interactions offers potential therapeutic avenues for IS treatment.
- Further research into these interactions may yield novel strategies to mitigate IS-related damage.
