Related Experiment Video

Updated: Aug 19, 2026

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
09:36

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia

Published on: December 22, 2023

Mechanisms of inherited cardiac conduction disease

Jeroen P P Smits1, Marieke W Veldkamp, Arthur A M Wilde

  • 1Department of Clinical and Experimental Cardiology, Experimental and Molecular Cardiology Group, Academic Medical Center, University of Amsterdam, Room M-0-107, Meibergdreef 9, PO Box 22700, 1100 DE Amsterdam, The Netherlands. j.p.smits@amc.uva.nl

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|March 15, 2005
PubMed

Insights

Inherited cardiac conduction disease (ICCD) can be structural or functional. This review explores if these forms are distinct diseases, impacting diagnosis and treatment.

Area of Science:

  • Cardiology
  • Genetics
  • Molecular Biology

Background:

  • Cardiac conduction disease (CCD) is a significant heart disorder with diverse pathophysiological mechanisms.
  • Inherited CCD (ICCD) can stem from structural abnormalities or functional defects, often involving cardiac ion channels.
  • Identifying genes for ICCD has advanced understanding of its underlying causes.

Purpose of the Study:

  • To investigate the hypothesis that structural and functional ICCD are fundamentally different diseases.
  • To determine if differentiating between structural and functional ICCD has implications for diagnosis, treatment, and prognosis.
  • To explore potential consequences for patients and their relatives.

Main Methods:

  • This is a review article, synthesizing existing research and evidence.
  • Analysis of genetic, molecular, and clinical data related to ICCD.
  • Comparative evaluation of structural versus functional ICCD mechanisms and outcomes.

Main Results:

  • The review aims to find evidence supporting the distinction between structural and functional ICCD.
  • Potential differences in disease mechanisms, genetic underpinnings, and protein functions are examined.
  • The study seeks to establish whether these distinctions have diagnostic and clinical relevance.

Conclusions:

  • The hypothesis that structural and functional ICCD are fundamentally different diseases warrants further investigation.
  • Such distinctions could significantly impact clinical management strategies for ICCD patients.
  • Understanding these differences may also inform genetic counseling for families affected by ICCD.

More Related Videos

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice09:20

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

Published on: July 5, 2021

Isolation and Kv Channel Recordings in Murine Atrial and Ventricular Cardiomyocytes11:33

Isolation and Kv Channel Recordings in Murine Atrial and Ventricular Cardiomyocytes

Published on: March 12, 2013

Related Concept Videos

Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
Conduction System of the Heart01:20

Conduction 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:...
Conduction System of the Heart01:19

Conduction 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...
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...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...