Role of stored iron in atherosclerosis

Area of Science:

• Cardiovascular Disease Research
• Iron Metabolism and Vascular Health

Background:

• Myocardial infarction and stroke are leading causes of death and significant financial burdens.
• Accumulated body iron stores, particularly after adolescence and menopause, are hypothesized to promote atherosclerosis.
• Iron's role in atherosclerosis is linked to lipid oxidation and foam cell formation, but evidence remains circumstantial.

Purpose of the Study:

• To review research on the role of stored iron in atherosclerosis pathogenesis.
• To evaluate the potential of iron reduction via phlebotomy for atherosclerosis prevention or treatment.
• To assess the feasibility of prospective intervention trials investigating the iron hypothesis.

Main Methods:

• Review of research over the past two decades on the iron-atherosclerosis hypothesis.
• Discussion of the link between rising body iron stores and atherosclerosis development.
• Emphasis on the need for controlled, prospective studies to validate the hypothesis.

Main Results:

• Circumstantial evidence suggests a link between stored iron and atherosclerosis.
• Phlebotomy is a feasible and safe method to reduce iron stores without causing deficiency.
• The Iron and Atherosclerosis Study (FeAST) is underway to prospectively test the iron hypothesis.

Conclusions:

• Further research, including prospective trials, is essential to confirm the role of stored iron in atherosclerosis.
• Iron reduction through phlebotomy presents a potential therapeutic strategy for vascular disease.
• The FeAST study aims to provide definitive evidence on the iron-atherosclerosis connection.