Morphometric and densitometric approach in hypertrophic cardiomyopathy (HCM)

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L Matturri1, B Biondo, E Grosso

  • 1Institute of Pathology, University of Milan, Italy.

European Journal of Histochemistry : EJH
|January 1, 1995
PubMed

Insights

Computerized image analysis reveals significant changes in heart cells and fibrosis in hypertrophic cardiomyopathy (HCM). This rapid method quantifies abnormalities, aiding in understanding this cardiac condition.

Area of Science:

  • Cardiovascular Pathology
  • Biomedical Engineering
  • Quantitative Morphology

Background:

  • Hypertrophic cardiomyopathy (HCM) is a complex cardiac condition characterized by myocardial hypertrophy.
  • Accurate quantitative assessment of cellular and interstitial changes is crucial for understanding HCM.
  • Existing methods for evaluating these changes can be laborious and time-consuming.

Purpose of the Study:

  • To establish a rapid and easy method for the quantitative evaluation of myocardial fibrocell size and fibrous-interstitial area in HCM.
  • To utilize computerized image analysis for morphometric assessment of cardiac tissue in HCM.
  • To compare morphometric parameters between HCM and normal hearts.

Main Methods:

  • Employed a Vidas image analyser for a morphometric study.
  • Assessed myocyte parameters: area, diameters, circular shape factor, nuclear area, and DNA content (integrated optical density).
  • Quantified the percentage of fibrosis in myocardial tissue.

Main Results:

  • HCM hearts showed increased myocyte area and transverse diameters, particularly in the septum and left ventricle.
  • A significant increase in fibrotic area was observed in the left ventricular wall (22.6%) and septum (15.9%).
  • Densitometric analysis revealed a significant increase in nuclear parameters (area and DNA content), suggesting myocyte hyperplasia.

Conclusions:

  • Computerized image analysis provides a rapid, less laborious, and effective method for quantifying morphologic abnormalities in HCM.
  • The findings highlight significant myocyte hypertrophy and interstitial fibrosis as key features of HCM.
  • This quantitative approach is valuable for describing the pathological characteristics of hypertrophic cardiomyopathy.

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