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Severity of angiographic coronary obstruction and the apolipoprotein E polymorphism in acute coronary syndromes

Arlisa Monteiro de Castro Dias1, Amália Faria dos Reis, Claudia Guerra Murad Saud

  • 1Hospital Universitário Antonio Pedro, Faculdade de Medicina, Universidade Federal Fluminense, Niterói, RJ, Brazil. arlisa@predialnet.com.br

Arquivos Brasileiros De Cardiologia
|October 24, 2009
PubMed

Insights

Apolipoprotein E (APOE) *4 allele is not linked to coronary artery disease severity. However, older age, ex-smoking status, and dyslipidemia are associated with multivascular lesions in acute coronary syndrome patients.

Area of Science:

  • Cardiovascular Genetics
  • Molecular Cardiology
  • Epidemiology of Cardiovascular Diseases

Background:

  • Controversies exist regarding the association between apolipoprotein E (APOE) and coronary artery disease (CAD).
  • Understanding genetic and clinical factors influencing CAD severity is crucial for risk stratification and management.

Purpose of the Study:

  • To investigate the relationship between APOE polymorphism, number of coronary vessels with significant obstruction, and clinical variables in patients with acute coronary syndrome (ACS).

Main Methods:

  • A cross-sectional study involving 207 patients diagnosed with ACS.
  • Coronary angiography and APOE genotype determination using the Restriction Fragment Length Polymorphism (RFLP) method were performed.
  • Clinical and demographic data were collected and analyzed.

Main Results:

  • The APOE *4 allele was not significantly associated with the degree of coronary artery obstruction (p=0.78).
  • Multivariate analysis identified age > 55 years, ex-smoker status, and dyslipidemia as significant predictors of multivascular lesions (p=0.025, p=0.004, p=0.05, respectively).
  • Univariate analysis also showed associations with previous coronary artery disease (CAD), diabetes, and metabolic syndrome.

Conclusions:

  • APOE polymorphism does not appear to influence the number of coronary vessels with significant obstruction in ACS patients.
  • Clinical factors such as advanced age, history of smoking, and dyslipidemia are independently associated with more severe coronary artery disease.
Abstract

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