PapersFlow Research Brief
Cardiomyopathy and Myosin Studies
Research Guide
What is Cardiomyopathy and Myosin Studies?
Cardiomyopathy and Myosin Studies is a research cluster examining the diagnosis, management, genetic basis including myosin mutations, and clinical outcomes of hypertrophic cardiomyopathy alongside related conditions such as dilated cardiomyopathy, left ventricular non-compaction, sudden death risk, cardiac imaging, titin mutations, and cardiac fibrosis.
This field encompasses 84,076 works focused on cardiomyopathies and myosin-related genetic mutations. Studies address clinical outcomes, cardiac imaging techniques, and risks like sudden death in hypertrophic cardiomyopathy. Key contributions include definitions, classifications, and management guidelines from highly cited papers.
Topic Hierarchy
Research Sub-Topics
Hypertrophic Cardiomyopathy Genetics
This sub-topic investigates sarcomere mutations, particularly in myosin heavy chain genes, underlying HCM pathogenesis. Researchers study genotype-phenotype correlations, penetrance, and modifier genes.
Myosin Function in Cardiomyocytes
This sub-topic explores myosin motor mechanics, cross-bridge cycling, and force generation in cardiac contraction. Researchers use biophysical assays and computational models to link mutations to dysfunction.
Left Ventricular Non-Compaction Diagnosis
This sub-topic covers echocardiographic and CMR criteria for diagnosing LVNC and distinguishing it from HCM. Researchers evaluate diagnostic accuracy, prevalence, and arrhythmic risk.
Sudden Cardiac Death Risk Stratification
This sub-topic develops scoring systems integrating ECG, imaging, genetics, and family history for SCD prediction in cardiomyopathies. Researchers validate models in prospective cohorts.
Dilated Cardiomyopathy Genetic Basis
This sub-topic examines truncating variants in titin and lamin genes causing DCM progression and heart failure. Researchers study inheritance patterns, penetrance, and overlap with other cardiomyopathies.
Why It Matters
Research in cardiomyopathy and myosin studies directly informs diagnosis and management of hypertrophic cardiomyopathy, as outlined in the "2014 ESC Guidelines on diagnosis and management of hypertrophic cardiomyopathy" by Elliott et al. (2014), which provides evidence-based strategies used in clinical practice across cardiology. Classifications from "Contemporary Definitions and Classification of the Cardiomyopathies" by Maron et al. (2006) standardize terminology, aiding precise identification of conditions like dilated cardiomyopathy and left ventricular non-compaction, thereby improving patient risk stratification for sudden death. These works support cardiac imaging recommendations in "Recommendations for the Evaluation of Left Ventricular Diastolic Function by Echocardiography" by Nagueh et al. (2008), applied in half of heart failure cases with preserved ejection fraction to guide therapy.
Reading Guide
Where to Start
"Report of the 1995 World Health Organization/International Society and Federation of Cardiology Task Force on the Definition and Classification of Cardiomyopathies" by Richardson et al. (1996), as it provides the foundational definitions essential for understanding all subsequent classifications and studies in the field.
Key Papers Explained
"Report of the 1995 World Health Organization/International Society and Federation of Cardiology Task Force on the Definition and Classification of Cardiomyopathies" by Richardson et al. (1996) establishes initial definitions, which Maron et al. refine in "Contemporary Definitions and Classification of the Cardiomyopathies" (2006) for greater precision. Elliott et al. build on these in "2014 ESC Guidelines on diagnosis and management of hypertrophic cardiomyopathy" (2014) by applying them to clinical practice. Nagueh et al. extend evaluation methods in "Recommendations for the Evaluation of Left Ventricular Diastolic Function by Echocardiography" (2008), integrating with cardiomyopathy assessments. Spudich and Watt's "The Regulation of Rabbit Skeletal Muscle Contraction" (1971) provides mechanistic insights into myosin relevant to genetic studies.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Focus on applications of classifications from Maron et al. (2006) and guidelines from Elliott et al. (2014) to genetic mutations in myosin and titin, emphasizing risk stratification for sudden death and diastolic function via Nagueh et al. (2008). Explore links to cardiac fibrosis and left ventricular non-compaction using imaging recommendations.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | The Effect of Cardiac Resynchronization on Morbidity and Morta... | 2005 | New England Journal of... | 6.2K | ✓ |
| 2 | Cardiac excitation–contraction coupling | 2002 | Nature | 4.6K | ✕ |
| 3 | The Regulation of Rabbit Skeletal Muscle Contraction | 1971 | Journal of Biological ... | 4.5K | ✓ |
| 4 | 2014 ESC Guidelines on diagnosis and management of hypertrophi... | 2014 | European Heart Journal | 4.2K | ✓ |
| 5 | Report of the 1995 World Health Organization/International Soc... | 1996 | Circulation | 3.4K | ✕ |
| 6 | Identification of Ubiquitin Ligases Required for Skeletal Musc... | 2001 | Science | 3.4K | ✓ |
| 7 | Contemporary Definitions and Classification of the Cardiomyopa... | 2006 | Circulation | 3.4K | ✕ |
| 8 | Recommendations for the Evaluation of Left Ventricular Diastol... | 2008 | European Journal of Ec... | 3.3K | ✓ |
| 9 | Current state of knowledge on aetiology, diagnosis, management... | 2013 | European Heart Journal | 3.3K | ✓ |
| 10 | A Novel Paradigm for Heart Failure With Preserved Ejection Fra... | 2013 | Journal of the America... | 3.3K | ✕ |
Frequently Asked Questions
What is the definition of cardiomyopathies?
The "Report of the 1995 World Health Organization/International Society and Federation of Cardiology Task Force on the Definition and Classification of Cardiomyopathies" by Richardson et al. (1996) establishes cardiomyopathies as diseases of the myocardium associated with cardiac dysfunction. This classification differentiates primary forms affecting the heart muscle alone from secondary ones linked to systemic disorders. It serves as a foundational reference for clinical and research applications.
How are contemporary cardiomyopathies classified?
"Contemporary Definitions and Classification of the Cardiomyopathies" by Maron et al. (2006) proposes a rigorous system based on morphology and function, resolving prior complexities. It categorizes conditions like hypertrophic, dilated, and restrictive cardiomyopathies with precise definitions. This framework enhances diagnostic consistency in cardiovascular medicine.
What are the ESC guidelines for hypertrophic cardiomyopathy?
The "2014 ESC Guidelines on diagnosis and management of hypertrophic cardiomyopathy" by Elliott et al. (2014) detail diagnostic criteria, risk assessment for sudden death, and therapeutic approaches. These guidelines integrate genetic testing for mutations like those in myosin and titin. They guide clinical decisions in affected patients worldwide.
How is left ventricular diastolic function evaluated?
"Recommendations for the Evaluation of Left Ventricular Diastolic Function by Echocardiography" by Nagueh et al. (2008) recommend integrating multiple echocardiographic parameters in routine exams. This applies particularly to dyspnea or heart failure patients with normal ejection fractions, occurring in about half of new diagnoses. The methods support accurate assessment of diastolic dysfunction in cardiomyopathies.
What role does myosin play in muscle contraction studies?
"The Regulation of Rabbit Skeletal Muscle Contraction" by Spudich and Watt (1971) demonstrates that actin activates the ATPase activity of heavy meromyosin and subfragment 1 without Ca2+ inhibition. Tropomyosin-troponin preparations inhibit this activation by 85%. These findings inform myosin function in cardiac muscle contexts.
What is the current state of myocarditis knowledge?
"Current state of knowledge on aetiology, diagnosis, management, and therapy of myocarditis" by Caforio et al. (2013) reviews clinical presentation, proposes new diagnostic criteria, and outlines treatment from the ESC Working Group. It addresses distinctions from other cardiomyopathies. This position statement updates management practices.
Open Research Questions
- ? How do specific myosin mutations alter cardiac excitation-contraction coupling in hypertrophic cardiomyopathy?
- ? What genetic interactions between myosin and titin mutations contribute to sudden death risk?
- ? Which imaging modalities best quantify left ventricular non-compaction and fibrosis progression?
- ? How do ubiquitin ligases identified in atrophy models influence dilated cardiomyopathy outcomes?
- ? What diastolic function metrics predict morbidity in heart failure with preserved ejection fraction linked to cardiomyopathies?
Recent Trends
The field maintains 84,076 works with sustained focus on genetic mutations in myosin and titin, hypertrophic cardiomyopathy management per Elliott et al. , and classifications from Maron et al. (2006).
2014No growth rate data over 5 years is available, and no recent preprints or news from the last 12 months indicate steady consolidation of existing high-citation works like Cleland et al. on resynchronization benefits.
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