Related Experiment Video
Updated: Jun 12, 2026
09:29
In Vitro Generation of Heart Field-specific Cardiac Progenitor Cells
Published on: July 3, 2019
The cardiac pacemaker and conduction system develops from embryonic myocardium that retains its primitive phenotype
Martijn L Bakker1, Vincent M Christoffels, Antoon F M Moorman
1Heart Failure Research Center, Academic Medical Center, Amsterdam, The Netherlands.
Journal of Cardiovascular Pharmacology
|May 28, 2010
Summary
Understanding the molecular regulation of the cardiac conduction system is key to treating arrhythmias. This review highlights that conduction system components arise from embryonic myocardium with primitive features, unlike differentiated working myocardium.
Area of Science:
- Cardiology
- Developmental Biology
- Molecular Biology
Background:
- Cardiac conduction system disorders are common and can lead to life-threatening arrhythmias.
- Current treatment options include medication or pacemaker implantation.
- Repair or regeneration is hindered by a lack of knowledge regarding molecular regulation of pacemaker myocardium.
Purpose of the Study:
- To review recent advances in understanding the molecular regulation of cardiac conduction system development.
- To clarify the origin of the cardiac conduction system components.
Main Methods:
- Review of current scientific literature on cardiac conduction system development.
- Analysis of molecular mechanisms regulating myocardial differentiation.
Main Results:
- The cardiac conduction system originates from specific embryonic myocardial populations.
- These embryonic cells retain primitive phenotypic characteristics.
- Adjacent myocardium differentiates into the working myocardium.
Conclusions:
- The cardiac conduction system arises from a distinct embryonic myocardial lineage.
- Understanding this developmental pathway is crucial for future regenerative strategies.
- This knowledge may pave the way for novel treatments for cardiac conduction disorders.
More Related Videos
Related Concept Videos
01:27Development of the Heart
The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
01:19Conduction System of the Heart
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
01:20Conduction System of the Heart
The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
This system relies on the unique properties of nodal and Purkinje cells:...
01:19Electrophysiology 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...
01:13Structure 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...
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
01:27Specialized 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...
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...