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Homocysteine and coronary heart disease risk in the PRIME study

J A Troughton1, J V Woodside, I S Young

  • 1Faculty of Medicine, Queen's University Belfast, Belfast, Northern Ireland, UK.

Atherosclerosis
|June 16, 2006
PubMed

Insights

Elevated homocysteine is linked to coronary heart disease (CHD) risk, particularly in current smokers. This study found a significant interaction between homocysteine, smoking, and CHD risk.

Area of Science:

  • Cardiovascular Epidemiology
  • Clinical Biochemistry

Background:

  • Recent meta-analyses suggest homocysteine as an independent predictor of coronary heart disease (CHD).
  • Debate exists on whether homocysteine's deleterious effects are synergistic with other risk factors.
  • The Prospective Epidemiological Study of Myocardial Infarction (PRIME) investigated cardiovascular risk factors in men from France and Northern Ireland.

Purpose of the Study:

  • To determine if higher homocysteine levels are associated with increased CHD risk in the PRIME case-control cohort.
  • To investigate potential synergistic interactions between homocysteine and pre-existing CHD risk factors.

Main Methods:

  • Homocysteine levels were measured in 323 participants who developed CHD and 638 matched controls.
  • Data from the Prospective Epidemiological Study of Myocardial Infarction (PRIME) were analyzed.
  • Statistical analysis included case-control comparisons and interaction testing.

Main Results:

  • No significant difference in homocysteine levels was observed between CHD cases and controls (p=0.18).
  • Homocysteine levels were significantly higher in current smokers compared to non-smokers (p=0.007).
  • A significant interaction was found between homocysteine, smoking, and CHD risk (chi2=10.29, p=0.006).

Conclusions:

  • Elevated homocysteine is significantly associated with coronary heart disease risk specifically in current smokers.
  • The findings highlight the importance of considering smoking status when evaluating homocysteine's role in CHD risk.
Abstract

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