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Folate deficiencies and cardiovascular pathologies

P Durand1, M Prost, D Blache

  • 1INSERM U 498, Biochimie des Lipoprotéines et Interactions Vasculaires, Faculté de Médecine, Université de Bourgogne, Dijon, France.

Clinical Chemistry and Laboratory Medicine
|September 24, 1998
PubMed
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Folate deficiency, often due to processing or genetic factors, can elevate homocysteine levels. Supplementation with N5-methyltetrahydrofolate may reduce cardiovascular risk associated with high homocysteine.

Area of Science:

  • Biochemistry
  • Nutritional Science
  • Cardiovascular Health

Background:

  • Folate availability is reduced by food processing, leading to deficiencies in vulnerable populations like the elderly and smokers.
  • Genetic variations, such as the thermolabile N5,10-methylenetetrahydrofolate reductase, affect folate metabolism.
  • Folate is crucial for DNA synthesis and the remethylation of homocysteine to methionine.

Purpose of the Study:

  • To investigate the link between folate deficiency, homocysteine levels, and cardiovascular disease risk.
  • To highlight the role of N5-methyltetrahydrofolate in homocysteine metabolism.
  • To evaluate the potential of folate supplementation in mitigating cardiovascular risks.

Main Methods:

  • Review of existing epidemiological and experimental studies on folate status and homocysteine levels.

Related Experiment Videos

  • Analysis of the biochemical pathways involving folate and homocysteine metabolism.
  • Correlation studies between plasma folate levels and circulating homocysteine.

    • Main Results:

    • Folate deficiency is linked to increased circulating homocysteine levels, particularly due to impaired N5-methyltetrahydrofolate function.
    • Hyperhomocysteinemia, a consequence of folate deficiency, is an independent risk factor for atherothrombosis.
    • Negative correlations observed between plasma N5-methyltetrahydrofolate and homocysteine concentrations.

    Conclusions:

    • Folate deficiency contributes significantly to hyperhomocysteinemia and associated cardiovascular risks.
    • N5-methyltetrahydrofolate plays a critical role in preventing homocysteine accumulation.
    • Clinical evaluation of N5-methyltetrahydrofolate supplementation is warranted for managing homocysteine-dependent cardiovascular risk.