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Homocysteine and chronic renal failure
A F Perna1, P Castaldo, N G De Santo
1Division of Nephrology and Institute of Biochemistry of Macromolecules, Second University of Naples, School of Medicine, Naples, Italy. a_perna25@hotmail.com
Mineral and Electrolyte Metabolism
|February 22, 2000
Summary
High homocysteine levels (hyperhomocysteinemia) are linked to cardiovascular disease and atherothrombosis. Vitamins, especially folate, may help lower homocysteine and prevent vascular issues.
Area of Science:
- Biochemistry
- Cardiovascular Medicine
- Nutritional Science
Background:
- Homocysteine, a methionine derivative, is implicated in atherothrombosis.
- Observational studies show a strong association between hyperhomocysteinemia and cardiovascular risk, even in chronic renal failure patients.
Purpose of the Study:
- To review the mechanisms of homocysteine toxicity.
- To explore the role of vitamins in homocysteine metabolism and cardiovascular health.
Main Methods:
- Biochemical analysis of homocysteine toxicity mechanisms (oxidation, hypomethylation, acylation).
- Review of epidemiological and biochemical evidence linking homocysteine to cardiovascular risk.
- Evaluation of vitamin supplementation's potential impact on homocysteine levels and vascular outcomes.
Main Results:
- Homocysteine toxicity involves oxidation, hypomethylation, and acylation, primarily targeting proteins.
- Vitamins, particularly folate, show potential in facilitating homocysteine metabolism and clearance.
- Reduced plasma homocysteine levels may prevent vascular occlusions in affected patients.
Conclusions:
- Homocysteine is a significant factor in atherothrombosis pathogenesis.
- Vitamins offer a potential therapeutic strategy for managing hyperhomocysteinemia and associated cardiovascular risks.
- Further interventional clinical trials are needed to confirm the role of homocysteine and the efficacy of vitamin supplementation.