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Updated: Aug 15, 2026
Simultaneous Assessment of Cardiomyocyte DNA Synthesis and Ploidy: A Method to Assist Quantification of Cardiomyocyte Regeneration and Turnover
Published on: May 23, 2016
[Nuclear ploidy in atrial cardiomyocytes in patients with heart disease]
I F Ibragimova1, R K Danilov, Sh Z Zagidullin
1Medical Institute, Ufa.
Insights
Congenital heart disease in children causes premature cell changes. In adults with acquired heart conditions, aging leads to reduced protein synthesis and cell swelling, not polyploidy.
Area of Science:
- Cardiovascular Biology
- Cellular Morphology
- Molecular Cardiology
Context:
- Investigating cellular and molecular changes in heart tissue.
- Analyzing intraoperative biopsies from patients with congenital and acquired heart conditions.
- Comparing age-related morphometric alterations in cardiomyocytes.
Purpose:
- To morphometrically study DNA and protein content in cardiomyocytes.
- To investigate the effects of hemodynamic hyperfunction on cardiomyocyte nuclei.
- To examine age-associated changes in protein synthesis and cellular hydration in acquired heart disease.
Summary:
- Congenital heart disease in pediatric patients is associated with premature polyploidy of cardiomyocyte nuclei due to hemodynamic hyperfunction.
- In adult patients (20-50 years) with acquired heart disease, polyploidy does not increase with age.
- Acquired heart disease in adults shows a decline in protein synthesis and intracellular edema with increasing age.
Impact:
- Provides insights into differential cellular responses to congenital versus acquired heart diseases.
- Highlights age-dependent molecular and structural alterations in the aging heart.
- Informs potential therapeutic targets for managing heart disease progression and cellular dysfunction.
Abstract:
The content of DNA and proteins has been studied morphometrically in intraoperative biopsies of patients of different ages with congenital heart diseases and rheumatic mitral stenosis. Hemodynamic hyperfunction provoked premature polyploidy of cardiomyocytes nuclei in children with congenital vitium cordis. In cardiomyocytes of 20-50-year-old patients with acquired vitium cordis polyploidy with an increasing age does not occur, but a decline in protein synthesis and intracellular edema are observed.
