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Hyperhomocysteinemia and venous thrombosis

G M Bos1, M den Heijer

  • 1University Hospital Rotterdam/Daniel den Hoed Cancer Center, The Netherlands.

Seminars in Thrombosis and Hemostasis
|October 8, 1998
PubMed

Insights

Hyperhomocysteinemia is a risk factor for vascular issues like venous thrombosis. While easily treated with vitamins, ongoing studies investigate if lowering homocysteine levels prevents recurrent thrombosis.

Area of Science:

  • Cardiovascular Medicine
  • Thrombosis Research

Background:

  • Hyperhomocysteinemia is increasingly recognized as a risk factor for various conditions, including neural tube defects, arterial cardiovascular disease, and venous thrombosis.
  • The association between hyperhomocysteinemia and vascular diseases, particularly venous thrombosis, has garnered significant attention.

Purpose of the Study:

  • To discuss hyperhomocysteinemia, its causes, and its association with venous thrombosis.
  • To evaluate the diagnostic utility of the methionine loading test for hyperhomocysteinemia.
  • To explore therapeutic options and ongoing research into the clinical relevance of lowering homocysteine levels for preventing recurrent venous thrombosis.

Main Methods:

  • Review of existing case-control and prospective studies on hyperhomocysteinemia and venous thrombosis.
  • Discussion of potential mechanisms linking hyperhomocysteinemia to venous thrombosis.
  • Description of a current international multicenter, placebo-controlled study investigating the efficacy of homocysteine level reduction.

Main Results:

  • Several case-control studies suggest an association between venous thrombosis and hyperhomocysteinemia.
  • Evidence for a causal relationship, especially for mild hyperhomocysteinemia, remains limited.
  • Hyperhomocysteinemia is generally treatable with vitamin supplementation.

Conclusions:

  • While an association exists, the causal role of mild hyperhomocysteinemia in venous thrombosis requires further investigation.
  • Ongoing research aims to determine the clinical significance of reducing homocysteine levels in preventing recurrent venous thrombosis.

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