[Cardic death and apoptosis of myocardium]

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In vitro Assessment of Myocardial Protection following Hypothermia-Preconditioning in a Human Cardiac Myocytes Model
08:22

In vitro Assessment of Myocardial Protection following Hypothermia-Preconditioning in a Human Cardiac Myocytes Model

Published on: October 27, 2020

Y J Chen1, R Wu, X H Huang

  • 1Institute of Forensic Sciences, Ministry of Justice, P. R. China, Shanghai 200063, P. R. China.

Fa Yi Xue Za Zhi
|January 23, 2003
PubMed

Insights

Myocardium apoptosis, detected by the TUNEL method, was observed in cardiac death cases. Arteriosclerotic heart death showed diffused apoptosis, unlike hypertensive heart death, suggesting apoptosis as a potential target for heart failure.

Area of Science:

  • Cardiovascular pathology
  • Cellular biology
  • Histopathology

Context:

  • Apoptosis, or programmed cell death, plays a role in various cardiovascular diseases.
  • Understanding myocardial apoptosis patterns in different causes of cardiac death is crucial for disease mechanism elucidation.
  • The TdT-mediated dUTP nick end labeling (TUNEL) assay is a standard method for detecting apoptotic cells.

Purpose:

  • To investigate and compare the extent and distribution of myocardial apoptosis in post-mortem human hearts across different causes of cardiac death.
  • To determine if specific patterns of apoptosis correlate with distinct etiological factors of cardiac demise.
  • To explore the potential of targeting myocardial apoptosis in the context of heart failure.

Summary:

  • The TUNEL method revealed significant myocardial apoptosis in cases of arteriosclerotic coronary heart death, particularly at the border zones of infarcted areas and within arterial walls.
  • Hypertensive heart death exhibited only sparse apoptosis in the myocardium.
  • No significant apoptosis was detected in myocardial tissue from individuals who died from external causes like falling or hanging.

Impact:

  • These findings highlight that myocardial apoptosis is a prominent feature in specific types of cardiac death, notably arteriosclerotic coronary heart disease.
  • The differential presence of apoptosis suggests distinct underlying pathomechanisms contributing to cardiac failure.
  • Myocardial apoptosis emerges as a potential therapeutic target for managing heart failure, warranting further investigation.

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