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Hyperhomocysteinemia: a risk factor for arterial and venous thrombotic disease
1Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Ospedale Maggiore, University of Milan, Italy.
Insights
Moderate hyperhomocysteinemia is a significant risk factor for arterial and venous thrombosis. Supplementing folic acid, vitamin B12, and B6 may reduce thrombotic disease risk.
Area of Science:
- Cardiovascular Medicine
- Metabolic Disorders
- Thrombosis Research
Background:
- Severe hyperhomocysteinemia, linked to hereditary homocysteine metabolism defects, elevates thrombosis risk.
- This observation spurred research into moderate hyperhomocysteinemia and general population thrombotic risk.
Purpose of the Study:
- To investigate the association between moderate hyperhomocysteinemia and thrombotic risk.
- To explore the role of genetic and environmental factors in hyperhomocysteinemia.
- To assess the potential impact of vitamin supplementation on thrombotic diseases.
Main Methods:
- Retrospective case-control studies.
- Prospective cohort studies.
- Analysis of genetic and environmental factors influencing homocysteine levels.
Main Results:
- Moderate hyperhomocysteinemia is a frequent, independent risk factor for premature arterial disease (coronary, cerebral, peripheral).
- Moderate hyperhomocysteinemia is associated with venous thrombosis in specific patient groups and the general population.
- Inadequate intake of folic acid, vitamin B12, or vitamin B6 is a common cause of hyperhomocysteinemia.
Conclusions:
- Moderate hyperhomocysteinemia significantly increases the risk of both arterial and venous thrombotic events.
- Dietary supplementation with folic acid, vitamin B12, and vitamin B6 holds potential to mitigate the public health burden of thrombotic diseases.
Abstract:
Patients with the rare homozygous hereditary defects of homocysteine metabolism that cause severe hyperhomocysteinemia and homocystinuria are at high risk of arterial and venous thrombosis. This prompted studies of the relationship between moderate hyperhomocysteinemia and thrombotic risk in the general population. In the last 2 decades, retrospective case-control studies and prospective cohort studies have demonstrated moderate hyperhomocysteinemia to be a frequent and independent risk factor for premature vascular disease in the coronary, cerebral, and peripheral arteries. More recently, the association of moderate hyperhomocysteinemia with venous thrombosis was shown in patients with early-onset or recurrent disease and in the general population. Genetic and environmental factors act in concert to cause moderate hyperhomocysteinemia. Since inadequate intake of folic acid, vitamin B12, or vitamin B6 are most frequently associated with hyperhomocysteinemia, dietary supplementation of these vitamins could have a tremendous impact on the epidemiology and natural history of arterial and venous thrombotic diseases.
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