Role of hyperhomocysteinemia in aortic disease

Area of Science:

• Cardiovascular Science
• Vascular Biology
• Biochemistry

Background:

• Elevated plasma homocysteine (Hcy) is associated with vascular disease and thrombotic events.
• Hyperhomocysteinemia is implicated in abdominal and thoracic aortic diseases.
• Hcy levels correlate with severe cardiovascular manifestations and dissection risk in Marfan syndrome.

Purpose of the Study:

• To investigate the association between homocysteine levels and aortic diseases.
• To explore potential mechanisms linking Hcy to aortic wall remodeling.
• To assess the clinical relevance of Hcy determination in patients with aortic conditions.

Main Methods:

• Literature review of studies on homocysteine and aortic diseases.
• Analysis of existing data on Hcy levels in patients with Marfan syndrome and abdominal aortic aneurysms.
• Examination of proposed molecular mechanisms in animal models.

Main Results:

• Hcy levels are significantly higher in patients with abdominal aortic aneurysms, correlating with aneurysm size.
• Hcy was associated with increased risk of severe cardiovascular manifestations or dissection in Marfan syndrome.
• Animal studies suggest hyperhomocysteinemia induces arterial wall remodeling via elastolysis and matrix metalloproteinase activation.

Conclusions:

• Homocysteine may play a role in the pathogenesis of aortic diseases.
• Hcy might directly impact arterial wall components like fibrillin-1 and collagen.
• Further studies are required to confirm the causal role of Hcy and its clinical utility in evaluating aortic disease patients.