Neuroinflammation, Stroke, Blood-Brain Barrier Dysfunction, and Imaging Modalities.

Area of Science:

• Neuroscience
• Immunology
• Pathology

Background:

• Blood-brain barrier (BBB) integrity is vital for central nervous system homeostasis.
• Ischemic stroke triggers neuroinflammation, which can exacerbate BBB breakdown and neuronal injury.
• The neurovascular unit involves complex interactions between brain cells and immune cells.

Purpose of the Study:

• To critically discuss the role of neuroinflammation in ischemic stroke.
• To focus on BBB integrity and neuro-peripheral immune interactions.
• To review imaging techniques and therapeutic interventions for stroke-associated neuroinflammation.

Main Methods:

• Literature review and critical discussion of existing research.
• Overview of in vivo imaging techniques for detecting neuroinflammation markers.
• Summary of clinical studies on anti-inflammatory interventions in stroke.

Main Results:

• Neuroinflammation involves oxidative stress, matrix metalloproteinase (MMP) production, microglial activation, and peripheral immune cell infiltration.
• Imaging modalities show potential for assessing BBB permeability, leukocyte infiltration, and microglial activation.
• Clinical translation of anti-inflammatory therapies has been challenging despite promising preclinical data.

Conclusions:

• Neuroinflammation is a critical factor in ischemic stroke, but its dual role complicates therapeutic targeting.
• Further research is needed to understand the transition from injury to repair phases of neuroinflammation.
• Time- and context-specific therapeutic strategies are essential for effective ischemic stroke treatment.