Related Experiment Video

Updated: Jan 29, 2026

Author Spotlight: Deciphering the Role of ATM in Ataxia-Telangiectasia and the Associated Cerebellar Degeneration
08:41

Author Spotlight: Deciphering the Role of ATM in Ataxia-Telangiectasia and the Associated Cerebellar Degeneration

Published on: December 27, 2024

2.0K

Role of the Purkinje system in heritable arrhythmias

Arthur A M Wilde1, Hasan Garan2, Penelope A Boyden3

  • 1AMC Heart Center, Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam; Department of Medicine Cardiology, Columbia University, Irving Medical Centre, New York, New York.

Heart Rhythm
|February 5, 2019
PubMed

Insights

This review explores genetic variants causing rapid ventricular arrhythmias originating in Purkinje cells. It details their impact on cardiac function and discusses treatments for these life-threatening conditions.

Area of Science:

  • Cardiology
  • Genetics
  • Electrophysiology

Background:

  • Arrhythmias can occur in structurally normal hearts.
  • Genetic variants are increasingly recognized as a cause of inherited arrhythmias.
  • Purkinje cells are implicated as a key site for certain ventricular arrhythmias.

Purpose of the Study:

  • To review rapid ventricular arrhythmias associated with pathogenic genetic variants.
  • To elucidate the role of Purkinje cells in the origin of these arrhythmias.
  • To discuss current therapeutic strategies for these genetic arrhythmia syndromes.

Main Methods:

  • Literature review focusing on genetic variants affecting cardiac electrical function.
  • Analysis of Purkinje cell anatomy, networks, and molecular characteristics.
  • Synthesis of information on clinical presentation and treatment of specific syndromes.

Main Results:

  • Pathogenic genetic variants alter cardiac cell electrical function, leading to arrhythmias.
  • Purkinje cells and their networks are identified as primary origins for specific ventricular arrhythmias.
  • Syndromes discussed include idiopathic ventricular fibrillation, catecholaminergic polymorphic ventricular tachycardia, long QT syndrome, Andersen-Tawil syndrome, and Brugada syndrome.

Conclusions:

  • Genetic variants are crucial in understanding arrhythmias in structurally normal hearts.
  • Targeting Purkinje cell dysfunction offers potential therapeutic avenues.
  • Management requires a comprehensive approach considering genetic basis and electrophysiological mechanisms.

Keywords:
ArrhythmiaDelayed afterdepolarizationMutationPurkinjeReentry

More Related Videos

Purkinje Cell Survival in Organotypic Cerebellar Slice Cultures06:31

Purkinje Cell Survival in Organotypic Cerebellar Slice Cultures

Published on: December 18, 2019

8.7K
Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

Published on: May 23, 2021

4.4K

Related Concept Videos

Heritability01:06

Heritability

Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
657
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
821
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
545
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.
1.8K
Role of Septins01:02

Role of Septins

Septins are the recently discovered fourth major protein component of the cytoskeleton, along with microfilaments, microtubules, and intermediate filaments. These proteins can associate with other cytoskeletal filaments and carry out varied roles or can be free-floating in the cytoplasm.
Cellular Functions of Septins
Recent studies have revealed the multifaceted roles of septins in various cellular processes such as cytokinesis, ciliogenesis, and neurogenesis. Septins act as scaffolds and...
2.2K
The Role of Culture01:23

The Role of Culture

Culture plays a crucial role in shaping self-identity and influencing thought and behavior, a foundational interest within social psychology. The multicultural perspective recognizes that individuals do not exist in a vacuum; instead, their experiences, perceptions, and actions are deeply influenced by the intersecting dimensions of their cultural, ethnic, and social group affiliations.Cultural Influence on Self-Identity and Social PerceptionCultural frameworks inform how individuals define...
410