Microglia as Double-Edged Players in Ischemic Stroke

Area of Science:

• Neuroscience
• Immunology
• Pathology

Background:

• Stroke is a major cause of death and disability.
• Microglial responses to ischemic injury are complex and dynamic.
• The traditional view of microglia as solely pro- or anti-inflammatory is insufficient.

Purpose of the Study:

• To review recent advances in understanding microglial dual roles after ischemic stroke.
• To highlight key mechanisms regulating microglial function.
• To discuss emerging therapeutic strategies targeting microglia.

Main Methods:

• Literature review of recent research on microglial responses in ischemic stroke.
• Focus on mechanisms including metabolic reprogramming, lipid metabolism, inflammasome activation, and epigenetic modification.

Main Results:

• Microglia exhibit heterogeneous and dynamic responses to ischemic injury.
• Microglia have dual roles: promoting neuroinflammation and exacerbating damage, but also facilitating repair and debris clearance.
• Key regulatory mechanisms include metabolic reprogramming, lipid metabolism, inflammasome activation, and epigenetic modification.

Conclusions:

• The dual role of microglia in ischemic stroke necessitates a nuanced understanding beyond simple pro- or anti-inflammatory classifications.
• Targeting specific microglial mechanisms offers promising therapeutic avenues.
• Further research is needed to overcome challenges in developing effective microglia-targeted therapies for stroke.