Cardiomyopathies: Temporal Review and Genetic Determination

Area of Science:

• Cardiology
• Genetics
• Molecular Biology

Background:

• Cardiomyopathies are myocardial diseases characterized by dysfunction, potentially with or without structural changes.
• These conditions are frequently genetically determined and can manifest as mechanical (systolic/diastolic) or electrical (arrhythmias, conduction disorders) dysfunction.
• Historically, cardiomyopathies included dilated, hypertrophic, restrictive-obliterative, and arrhythmogenic types.

Purpose of the Study:

• To review the historical evolution of cardiomyopathies.
• To discuss current issues in the classification and nomenclature of cardiomyopathies.
• To explore the genetic basis and potential gene therapy for cardiomyopathies.

Main Methods:

• This study is a comprehensive literature review.
• It synthesizes information on the history, classification, genetics, and therapeutic approaches to cardiomyopathies.

Main Results:

• The definition of cardiomyopathy has expanded to include electrical disorders without structural substrates, such as channelopathies and ryanodine receptor disorders.
• Genetic factors play a significant role in the etiology of many cardiomyopathies.
• Gene therapy presents a potential future treatment avenue.

Conclusions:

• Cardiomyopathy classification and understanding have evolved significantly, now encompassing electrical disorders.
• Genetic determinants are crucial in cardiomyopathy development.
• Advances in gene therapy offer promising prospects for treating these heart muscle diseases.