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[Histochemistry of Coronary Arteries in Myocardial Infarction]

E I Sokolov1,2, S S Golubev1,2, K A Abrosimova1,2

  • 1Moscow State University of Medicine and Dentistry named after A.I. Evdokimov, Moscow, Russia.

Kardiologiia
|March 15, 2017
PubMed

Insights

Myocardial infarction patients show decreased coronary artery area and increased xanthoma cells, glycoproteins, and glycosaminoglycans in the intima. Inflammatory infiltrates were also observed in their coronary arteries.

Area of Science:

  • Cardiovascular Pathology
  • Histopathology
  • Ischemic Heart Disease

Background:

  • Myocardial infarction (MI) is a leading cause of death worldwide.
  • Understanding the histopathological changes in coronary arteries is crucial for diagnosis and treatment.
  • Ischemic heart disease (IHD) involves complex changes in the arterial wall.

Purpose of the Study:

  • To quantitatively compare coronary artery dimensions in myocardial infarction patients versus healthy controls.
  • To identify and characterize cellular and extracellular matrix components in the coronary arteries of IHD patients.
  • To investigate the presence of inflammatory infiltrates in the coronary arteries of MI patients.

Main Methods:

  • Autopsy material from 15 myocardial infarction patients and 5 healthy controls (car accident victims) was analyzed.
  • Quantitative comparison of coronary artery area was performed.
  • Histological examination focused on intima thickening, cellular composition (xanthoma cells), and extracellular matrix components (glycoproteins, glycosaminoglycans).
  • Inflammatory infiltrates were identified and characterized.

Main Results:

  • Coronary artery area was significantly decreased in patients with myocardial infarction compared to controls.
  • Ischemic heart disease patients exhibited numerous "xanthoma cells" forming a matrix network rich in glycoproteins.
  • Intima thickening in IHD patients was attributed to increased glycosaminoglycans and glycoproteins.
  • Lymphocytes and xanthomatous cells formed inflammatory infiltrates in the coronary arteries of all MI patients.

Conclusions:

  • Myocardial infarction is associated with reduced coronary artery dimensions.
  • Histopathological findings in IHD include xanthoma cells, altered extracellular matrix composition, and inflammation.
  • These changes contribute to the pathophysiology of myocardial infarction and ischemic heart disease.

Keywords:
coronary arteriesglycosaminoglycanmyocardial infarctionproteoglycansmooth muscle cellsxanthoma cells

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