[Molecular markers of endothelial dysfunction in acute ischemic stroke]

Area of Science:

• Biochemistry and Molecular Biology
• Neurology
• Vascular Biology

Context:

• Ischemic stroke, accounting for 80% of strokes, involves complex platelet activation and coagulation pathways.
• Differentiating stroke subtypes (atherothrombotic, cardioembolic, lacunar) is crucial for targeted therapy.
• Biomarkers are needed to elucidate the specific pathomechanisms of stroke subtypes.

Purpose:

• To investigate the role of von Willebrand factor (vWF) as a marker of endothelial injury in acute ischemic stroke.
• To differentiate stroke subtypes by measuring endothelial markers (vWF, thrombomodulin) and platelet activation markers (beta-thromboglobulin).
• To assess the temporal changes of these markers in relation to stroke onset.

Summary:

• Elevated von Willebrand factor (vWF) levels were observed in stroke patients compared to controls, persisting for weeks.
• Beta-thromboglobulin levels were significantly higher in stroke patients, particularly in atherothrombotic and cardioembolic subtypes, indicating platelet activation.
• Soluble thrombomodulin showed only slight, non-significant elevations in stroke patients.

Impact:

• Early beta-thromboglobulin measurement aids in the differential diagnosis of ischemic stroke subtypes.
• Sustained elevation of vWF may indicate ongoing endothelial dysfunction in the stroke penumbra.
• These findings support the use of specific biomarkers for improved stroke diagnosis and management strategies.