Microglial activation after ischaemic stroke.

Area of Science:

• Neuroscience
• Immunology
• Cell Biology

Background:

• Ischemic stroke triggers rapid microglial activation in the central nervous system.
• Microglial activation is implicated in neuroinflammation and the progression of ischemic tissue damage.
• Key events include microglial morphological changes, proliferation, and polarization.

Purpose of the Study:

• To review the morphological and functional aspects of microglial activation post-ischemic stroke.
• To highlight advancements in two-photon imaging for studying microglial responses.
• To discuss the unclear role of activated microglia in post-stroke recovery.

Main Methods:

• Review of existing literature on microglial activation after ischemic stroke.
• Focus on studies utilizing confocal and two-photon imaging techniques.
• Analysis of morphological and functional characteristics of activated microglia.

Main Results:

• Microglial activation is a rapid and stereotypical response to ischemic stroke.
• The degree of microglial activation correlates with the severity of ischemia.
• Activated microglia exhibit diverse polarization phenotypes.

Conclusions:

• The precise role of activated microglia (beneficial or detrimental) in post-stroke recovery requires further investigation.
• Two-photon imaging provides valuable insights into microglial dynamics during ischemic events.
• Understanding microglial activation is crucial for developing therapeutic strategies for ischemic stroke.