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Related Experiment Videos

Hyperhomocysteinaemia and associated disease

R C Bakker1, D P Brandjes

  • 1Department of Internal Medicine, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands.

Pharmacy World & Science : PWS
|June 1, 1997
PubMed
Summary

Mildly elevated homocysteine levels, often genetically determined, increase risks for vascular disease and pregnancy complications. While vitamin treatment is possible, its benefits require further study.

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Area of Science:

  • Biochemistry
  • Genetics
  • Vascular Medicine

Background:

  • Elevated plasma homocysteine is linked to environmental and genetic factors.
  • Severe hyperhomocysteinemia is rare, typically manifesting in childhood with vascular complications.
  • Mildly elevated homocysteine affects 5% of the population, increasing risks for atherosclerosis, thrombosis, and pregnancy issues.

Purpose of the Study:

  • To review the causes and consequences of elevated plasma homocysteine.
  • To highlight the role of genetic factors, such as MTHFR deficiency, in hyperhomocysteinemia.
  • To discuss the potential for vitamin supplementation in managing mild hyperhomocysteinemia.

Main Methods:

  • Literature review of genetic and environmental factors influencing homocysteine levels.
  • Analysis of epidemiological data linking homocysteine to vascular disease and pregnancy outcomes.
  • Examination of studies on MTHFR gene variants and their interaction with folate intake.

Main Results:

  • Mild hyperhomocysteinemia is associated with increased risk of premature atherosclerosis, venous thrombosis, neural tube defects, and early pregnancy loss.
  • Homozygosity for thermolabile methylenetetrahydrofolate reductase (MTHFR) deficiency is a significant genetic contributor, influenced by dietary folate.
  • Vitamin supplementation offers a potential treatment, but clinical benefits are not yet definitively established.

Conclusions:

  • Mild hyperhomocysteinemia is a prevalent condition with significant health implications.
  • Genetic factors, particularly MTHFR mutations, play a crucial role, modulated by nutritional status.
  • Further research is needed to confirm the efficacy of vitamin supplementation for treating mild hyperhomocysteinemia and its associated risks.

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