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Cardiomyopathy I: Introduction and Classification

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...

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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...

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Related Experiment Video

Updated: Jul 12, 2026

Isolation and Physiological Analysis of Mouse Cardiomyocytes

Isolation and Physiological Analysis of Mouse Cardiomyocytes

Published on: September 7, 2014

Hormones and postpartum cardiomyopathy.

Carmen Clapp¹, Stéphanie Thebault, Gonzalo Martínez de la Escalera

¹Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Qro, México. clapp@servidor.unam.mx

Trends in Endocrinology and Metabolism: TEM

|September 4, 2007

Summary

Prolactin causes dangerous postpartum cardiomyopathy by creating a harmful 16 kDa fragment. This fragment, vasoinhibin, damages heart blood vessels in mothers.

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Isolation and Physiological Analysis of Mouse Cardiomyocytes

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Published on: September 7, 2014

Post-Myocardial Infarction Heart Failure in Closed-chest Coronary Occlusion/Reperfusion Model in Göttingen Minipigs and Landrace Pigs

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Published on: April 17, 2021

Area of Science:

Cardiovascular Biology
Endocrinology
Reproductive Medicine

Background:

Prolactin, essential for lactation, is implicated in postpartum cardiomyopathy.
This condition poses a life-threatening risk to late-term and lactating mothers.

Discussion:

Prolactin's detrimental cardiac effects stem from myocardial cathepsin-D upregulation.
Cathepsin-D cleaves prolactin into a 16 kDa fragment known as vasoinhibin.
Vasoinhibin exhibits anti-angiogenic and pro-apoptotic properties.

Key Insights:

The 16 kDa prolactin fragment (vasoinhibin) impairs developing cardiac vasculature.
This mechanism links prolactin to the pathogenesis of postpartum cardiomyopathy.

Outlook:

Further research into vasoinhibin's role may reveal therapeutic targets.
Understanding this pathway could improve management of peripartum heart conditions.