Endothelial Dysfunction and Hyperhomocysteinemia-Linked Cerebral Small Vessel Disease: Underlying Mechanisms and...

Area of Science:

• Neurology
• Cardiovascular Science
• Vascular Biology

Background:

• Cerebral small vessel disease (cSVD) is a major cause of stroke and dementia, with limited treatment options.
• The exact pathogenesis of cSVD is not fully understood, but links to endothelial dysfunction are emerging.
• Elevated serum homocysteine levels are increasingly associated with cSVD, suggesting a role for hyperhomocysteinemia.

Purpose of the Study:

• To explore the intricate relationship between hyperhomocysteinemia and cSVD.
• To elucidate the role of endothelial dysfunction in mediating the effects of hyperhomocysteinemia on cSVD.
• To identify the optimal therapeutic window for interventions targeting homocysteine levels in cSVD.

Main Methods:

• Review of existing literature on hyperhomocysteinemia, endothelial dysfunction, and cSVD.
• Analysis of the mechanisms by which hyperhomocysteinemia impacts endothelial function (oxidative stress, inflammation, epigenetics).
• Examination of the temporal relationship between endothelial dysfunction, hyperhomocysteinemia, and the development of cSVD.

Main Results:

• Hyperhomocysteinemia affects endothelial function early, preceding overt small vessel damage.
• Endothelial dysfunction is a critical link between elevated homocysteine and cSVD development.
• Current strategies to lower homocysteine may be insufficient if initiated late.

Conclusions:

• Hyperhomocysteinemia is a significant risk factor and potential therapeutic target for cSVD.
• Targeting endothelial dysfunction offers a promising avenue for cSVD treatment.
• Timely intervention is crucial for effectively managing hyperhomocysteinemia in the context of cSVD.