Imaging blood-brain barrier dysfunction in animal disease models

Area of Science:

• Neuroscience
• Medical Imaging
• Pathology

Background:

• The blood-brain barrier (BBB) protects the central nervous system (CNS) but its dysfunction is implicated in various neurological disorders like stroke and Alzheimer's disease.
• BBB impairment leads to increased permeability, plasma leakage, and brain edema, contributing to secondary inflammation and neuronal damage.
• Accurate imaging of BBB integrity is essential for clinical management and research into CNS diseases.

Purpose of the Study:

• To review recent advances in imaging techniques for assessing blood-brain barrier (BBB) dysfunction in neurological diseases.
• To discuss the challenges and opportunities in translating these advanced imaging methods into clinical practice.

Main Methods:

• The review synthesizes information from studies utilizing various imaging modalities, from in situ staining to noninvasive in vivo techniques.
• Methodological advances in morphologic and functional brain imaging are highlighted.
• The capacity of different techniques for quantitative and kinetic measures of BBB impairment is considered.

Main Results:

• Recent imaging techniques provide insights into the cellular and molecular mechanisms of BBB dysfunction in animal models.
• These methods offer varying spatial resolution, sensitivity, and quantitative capabilities for assessing BBB integrity.
• Despite progress, the clinical application of advanced BBB imaging techniques is progressing slowly.

Conclusions:

• Continued development and validation of advanced imaging techniques are crucial for understanding BBB dysfunction in neurological diseases.
• Overcoming obstacles in translation is necessary to improve clinical diagnosis and patient outcomes.
• Further research focusing on the clinical utility of these imaging tools is warranted.