Arrhythmogenic right ventricular dysplasia/cardiomyopathy type 1: a light on molecular mechanisms

Koen L A Vanderschuren1, Tom Sieverink1, Ronald Wilders1

  • 1Heart Failure Research Center, Academic Medical Center, University of Amsterdam, Meibergdreef 15, P.O. Box 22700, 1100 DE Amsterdam, The Netherlands.

Insights

Transforming growth factor beta 3 (TGF β 3) plays a key role in arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) type 1. This review explores TGF β 3

Area of Science:

  • Cardiology
  • Genetics
  • Molecular Biology

Background:

  • Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is an inherited condition leading to arrhythmias, heart failure, and sudden cardiac death.
  • ARVD/C type 1 is linked to altered expression of transforming growth factor beta 3 (TGF β 3).

Purpose of the Study:

  • To review proposed mechanisms underlying ARVD/C type 1.
  • To elucidate the role of TGF β 3 in disease progression.
  • To discuss the involvement of fibrogenesis, apoptosis, and the immune system.

Main Methods:

  • Literature review of existing studies on ARVD/C mechanisms.
  • Analysis of TGF β 3 signaling pathways (Smad, β -catenin).
  • Discussion of apoptosis and immune system modulation in ARVD/C.

Main Results:

  • TGF β 3 can promote fibrogenesis via Smad and/or β -catenin signaling.
  • Apoptosis plays a role in ARVD/C pathogenesis.
  • The immune system acts as a modulator and amplifier in ARVD/C onset and progression.

Conclusions:

  • TGF β 3 is a significant factor in ARVD/C type 1.
  • Understanding these molecular mechanisms is crucial for developing therapeutic strategies.
  • Further research into immune system involvement may offer new treatment avenues.

Related Concept Videos

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...
826
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...
805
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.
2.7K
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
790
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
952
Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
906