Related Experiment Video

Updated: Jul 17, 2026

Simultaneous Assessment of Cardiomyocyte DNA Synthesis and Ploidy: A Method to Assist Quantification of Cardiomyocyte Regeneration and Turnover
08:03

Simultaneous Assessment of Cardiomyocyte DNA Synthesis and Ploidy: A Method to Assist Quantification of Cardiomyocyte Regeneration and Turnover

Published on: May 23, 2016

Myocyte death and renewal: modern concepts of cardiac cellular homeostasis

Georgina M Ellison1, Daniele Torella, Ioannis Karakikes

  • 1Cardiovascular Institute and Center for Cardiovascular Health, Mount Sinai School of Medicine, New York, NY 10029, USA.

Nature Clinical Practice. Cardiovascular Medicine
|January 19, 2007
PubMed

Insights

Mammalian hearts possess cardiac stem cells (CSCs) that regenerate heart muscle throughout life. Understanding CSC biology is key to developing new treatments for cardiovascular disease.

Area of Science:

  • Cardiovascular biology
  • Regenerative medicine
  • Cardiac stem cell research

Background:

  • The adult mammalian heart has intrinsic regenerative capacity due to cardiac stem cells (CSCs).
  • While primarily composed of terminally differentiated myocytes, the heart can generate new cells throughout life.
  • Myocyte turnover, involving cell death and CSC-driven myocyte formation, maintains cardiac output.

Purpose of the Study:

  • To review advancements in cardiac cell biology relevant to cardiovascular medicine.
  • To highlight the importance of understanding CSC mechanisms for regenerative therapies.
  • To explore how manipulating CSCs can inform clinical regeneration protocols.

Main Methods:

  • Review of current literature on cardiac stem cell biology.
  • Analysis of mechanisms regulating CSC number, growth, differentiation, and aging.
  • Discussion of potential impacts on cardiovascular medicine.

Main Results:

  • CSCs are activated by stimuli, proliferate, and differentiate into myocytes and vessels.
  • CSC activity contributes significantly to myocardial mass changes.
  • Understanding CSC regulation is crucial for future regenerative strategies.

Conclusions:

  • The regenerative capacity of the mammalian heart relies on cardiac stem cells (CSCs).
  • Further research into CSC biology and regulation is essential for advancing regenerative cardiovascular medicine.
  • Manipulating CSCs holds promise for developing effective clinical regeneration protocols.

More Related Videos

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes09:41

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Published on: February 24, 2017

Isolation and Functional Characterization of Human Ventricular Cardiomyocytes from Fresh Surgical Samples14:39

Isolation and Functional Characterization of Human Ventricular Cardiomyocytes from Fresh Surgical Samples

Published on: April 21, 2014

Related Concept Videos

Structure of Cardiac Muscles01:13

Structure of Cardiac Muscles

Cardiac muscle, or myocardium, is a specialized type of muscle found exclusively in the heart. Its unique structural and functional characteristics enable the heart to perform its vital role of pumping blood throughout the body continuously and rhythmically. The cardiac muscle cells, or cardiomyocytes, possess an endomysium and perimysium but do not have an epimysium.
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
Specialized Characteristics of Cardiac Muscles01:27

Specialized Characteristics of Cardiac Muscles

The primary role of cardiac muscles is to propel blood throughout the cardiovascular system. The cardiac muscle cells, or cardiomyocytes, exhibit specialized characteristics that allow them to perform this function.
Cardiac muscle cells are smaller than skeletal muscles, averaging 10–20 mm in diameter and 50–100 mm in length. However, they have large energy demands for continuous contraction and relaxation. This energy is almost exclusively derived from aerobic metabolism of energy reserves in...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase of...