Related Experiment Videos
Immunosuppressive therapy in virus-negative inflammatory cardiomyopathy
1Cardiovascular, Respiratory, Nephrologic, Geriatric and Anesthesiologic Sciences Department, La Sapienza University, Viale del Policlinico 155, 00100, Rome, Italy. biocard@inmi.it
Herz
|October 20, 2012
Summary
Immunosuppression effectively treats virus-negative inflammatory cardiomyopathy (ICM), improving heart function. This therapy shows significant benefits, though a small percentage may not respond due to underlying viral presence or other mechanisms.
Area of Science:
- Cardiology
- Immunology
- Pathology
Background:
- The efficacy of immunosuppression for lymphocytic inflammatory cardiomyopathy (ICM) remains debated.
- Previous studies suggest benefit in virus-negative ICM but lack definitive evidence.
- Cardiomyocyte HLA up-regulation may indicate susceptibility to immunosuppressive therapy.
Purpose of the Study:
- To evaluate the therapeutic role of immunosuppression in virus-negative inflammatory cardiomyopathy.
- To assess the impact of immunosuppression on left ventricular function and dimensions in ICM patients.
Main Methods:
- A single-center, randomized, double-blind trial (TIMIC study) was conducted.
- 85 virus-negative ICM patients received prednisone and azathioprine plus supportive care.
- 42 patients received placebo with supportive treatment.
Main Results:
- 88% of treated patients showed significant improvement in left ventricular ejection fraction and reduced dimensions.
- Compared to placebo, where 83% initially had cardiac impairment.
- 12% of treated patients did not respond, possibly due to undetected viruses or non-immunosuppressive mechanisms.
Conclusions:
- Immunosuppression is effective in treating virus-negative ICM, leading to cardiac recovery.
- Response is linked to reduced cardiomyocyte death, increased proliferation, and new contractile material.
- Further investigation is needed for non-responding cases.
Related Concept Videos
01:14Myocarditis III: Medical Management
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
01:29Cardiomyopathy 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...
01:17Pericarditis III: Medical Management
The primary objectives of managing pericarditis are to determine the underlying cause, provide effective therapy for treatment and symptom relief, and promptly detect signs and symptoms of cardiac tamponade. The following outlines the essential aspects of medical management for pericarditis:ObjectivesDetermine the Cause: Identifying the underlying cause of pericarditis is crucial for targeted treatment. Causes include viral infections, autoimmune diseases, post-cardiac injury syndrome, and...
01:29Cardiomyopathy V: Interprofessional Care
Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
01:21Myocarditis I: Introduction
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
01:29Cardiomyopathy 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...