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Hypertensive cardiomyopathy - histopathological and immunohistochemical aspects

Anda Mariana Braşoveanu1, Laurenţiu Mogoantă, Gheorghe Dan Mălăescu

  • 1Research Center for Microscopic Morphology and Immunology, University of Medicine and Pharmacy of Craiova, Romania; laurentiu_mogoanta@yahoo.com.

Romanian Journal of Morphology and Embryology = Revue Roumaine De Morphologie Et Embryologie
|October 29, 2019
PubMed

Insights

Arterial hypertension (AH) causes significant cardiac remodeling, including increased extracellular matrix and reduced microvessels. These changes alter cardiomyocyte structure, impacting heart function in hypertensive individuals.

Area of Science:

  • Cardiovascular Pathology
  • Histopathology
  • Immunohistochemistry

Background:

  • Arterial hypertension (AH) is a leading global cause of morbidity and mortality.
  • AH affects a large proportion of the adult population, increasing with age.
  • It is a multifactorial condition and a major risk factor for cardiovascular diseases.

Purpose of the Study:

  • To investigate the histopathological and immunohistochemical changes in the left ventricle myocardium due to arterial hypertension.
  • To evaluate alterations in cardiomyocytes and the extracellular matrix (ECM) in hypertensive hearts.

Main Methods:

  • Examination of myocardial tissue fragments from the left ventricle.
  • Histopathological analysis to assess tissue structure.
  • Immunohistochemical staining to evaluate specific protein markers (desmin, CD56/NCAM1).

Main Results:

  • Observed an increase in ECM quantity, with expanded intercellular spaces and collagen deposition.
  • Noted a significant reduction in myocardial microvessel density.
  • Found alterations in cardiomyocyte structure, including decreased desmin and intercellular connections (CD56/NCAM1).

Conclusions:

  • Arterial hypertension induces significant structural changes in the left ventricle myocardium.
  • These changes include ECM expansion, reduced vascularization, and cardiomyocyte alterations.
  • The observed histopathological modifications contribute to the progression of cardiac dysfunction in AH.

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