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[Risk factors for cardiovascular diseases: what is the role for homocysteine?]
Maria Grazia Bendini1, Gaetano Antonio Lanza, Andrea Mazza
1U.O. di Cardiologia, Ospedale S. Maria della Stella, Orvieto, TR. bendini.mg@tiscalinet.it
Insights
High homocysteine levels are linked to cardiovascular disease risk. However, current evidence does not support homocysteine as an independent major risk factor due to complex influencing factors and trial results.
Area of Science:
- Biochemistry
- Cardiology
- Metabolic Disorders
Context:
- Cardiovascular diseases (CVDs) are major health concerns.
- Classical risk factors are well-established.
- Emerging risk markers, such as homocysteine, warrant investigation.
Purpose:
- To review the association between homocysteine levels and cardiovascular disease risk.
- To explore the multifactorial causes of hyperhomocysteinemia.
- To evaluate the role of homocysteine in atherothrombosis.
Summary:
- Homocysteine, a sulfur-containing amino acid, is implicated in cardiovascular risk.
- Hyperhomocysteinemia results from genetic, pathophysiological, lifestyle, and drug-related factors.
- Elevated homocysteine promotes atherothrombosis via endothelial dysfunction, inflammation, and thrombophilia.
Impact:
- Despite associations, data heterogeneity and trial outcomes limit classifying homocysteine as an independent major CVD risk factor.
- Further research is needed to clarify homocysteine's precise role in cardiovascular pathology.
- Understanding homocysteine metabolism is crucial for cardiovascular risk assessment.
Abstract:
Cardiovascular diseases are commonly related to classical risk factors, but other risk markers have been identified, including homocysteine. Homocysteine is a sulphurated amino acid which derives from methionine. The causes of hyperhomocysteinemia are multifactorial, such as genetic defects, pathophysiological conditions, lifestyle and drugs-related. Hyperhomocysteinemia favors atherothrombosis through endothelial dysfunction, enhancement of inflammation and thrombophilic profile. A number of clinical and laboratory trials exist regarding the association between homocysteine levels and an increased risk of cardiovascular disease. However, the lack of homogeneity in the data, together with the high number of factors capable of influencing homocysteine plasma levels, and the disappointing results of therapeutic trials do not permit us at present to consider homocysteine as an independent and major risk factor for cardiovascular disease.
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