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Circulating thrombotic and haemostatic components in patients with coronary artery disease

Kavita K Shalia1, V K Shah, M R Mashru

  • 1H. N. Medical Research Society, Sir H. N. Hospital and Research Centre, Raja Rammohan Roy Road, Mumbai, 400 004 India.

Indian Journal of Clinical Biochemistry : IJCB
|October 30, 2012
PubMed

Insights

This study found elevated tissue factor (TF) in acute myocardial infarction, unstable angina, and stable angina patients compared to healthy individuals. This indicates a procoagulant state across these cardiovascular conditions.

Area of Science:

  • Cardiovascular Medicine
  • Hemostasis and Thrombosis
  • Biochemistry

Background:

  • Thrombotic and hemostatic factors play a crucial role in cardiovascular diseases.
  • Understanding these components is vital for diagnosing and managing conditions like myocardial infarction and angina.

Purpose of the Study:

  • To analyze circulating levels of key thrombotic and hemostatic components.
  • To compare these levels in patients with acute myocardial infarction, unstable angina, stable angina, and healthy controls.

Main Methods:

  • Measurement of tissue factor (TF), tissue factor pathway inhibitor (TFPI), tissue plasminogen activator (t-PA), and plasminogen activator inhibitor-1 (PAI-1).
  • Comparison of levels across four groups: acute MI, post-treatment unstable angina/NSTEMI, stable angina, and healthy individuals.

Main Results:

  • Significantly increased TF levels were observed in acute MI (2.0-fold), unstable angina (2.2-fold), and stable angina (1.8-fold) groups compared to controls.
  • Plasminogen activator inhibitor-1 (PAI-1) significantly increased in the acute MI group (35.8%).
  • TFPI and t-PA increased in younger (<40 years) acute MI patients, with insignificant changes in older patients, suggesting age-related differences.

Conclusions:

  • Acute myocardial infarction patients exhibit increased thrombotic and decreased fibrinolytic conditions.
  • Elevated TF in stable angina patients suggests a procoagulant status even in less acute phases.
  • Findings highlight the complex role of hemostatic factors in different stages of coronary artery disease.

Keywords:
Acute Myocardial InfarctionNon-ST elevated MIStable anginaThrombotic and haemostatic components

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