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[Hyperhomocysteinemia. A risk factor for the development of vascular diseases not associated with lipid levels]

H Hyánek1, J Stríbrný, P Sebesta

  • 1Oddĕlení klinické biochemie, nemocnice Na Homolce, Praha.

Casopis Lekaru Ceskych
|February 26, 1998
PubMed

Insights

Elevated total homocysteine, a factor in vascular damage, showed no clear link to lipid levels in patients undergoing arterial bypass or from lipid clinics. Further research is needed to understand this complex relationship.

Area of Science:

  • Cardiovascular Science
  • Clinical Biochemistry
  • Nutritional Science

Context:

  • Elevated total homocysteine is linked to vascular damage, particularly in patients with atherosclerotic conditions.
  • Understanding the relationship between homocysteine and lipid metabolism is crucial for assessing cardiovascular risk.
  • Patients with atherosclerotic vascular damage often present with elevated homocysteine levels.

Purpose:

  • To investigate the correlation between total plasma homocysteine levels and various lipid indicators.
  • To determine if homocysteine acts as a lipid-dependent or lipid-independent risk factor in cardiovascular disease.
  • To examine the relationship in healthy subjects and patients with specific vascular conditions.

Summary:

  • A study involving 100 healthy subjects and 529 patients examined the association between total homocysteine and lipid markers like total cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, apolipoproteins, and Lp(a).
  • Correlations found were weak, with coefficients ranging from -0.12 to 0.29 for lipid indicators.
  • Folate levels showed a moderate correlation (r=0.28) with homocysteine, while vitamin B12 and fibrinogen showed negligible associations.
  • No unequivocal relationship was detected between total homocysteine and selected lipid indicators across patient groups.

Impact:

  • The findings suggest that homocysteine's role in vascular damage may not be directly explained by its interaction with common lipid parameters.
  • This study highlights the complexity of cardiovascular risk factors, indicating that homocysteine's impact might be mediated through pathways independent of lipid metabolism.
  • Further research is warranted to elucidate the precise mechanisms by which homocysteine contributes to vascular pathology.
Abstract

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