Related Experiment Video
Updated: May 17, 2026
14:10
Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
Published on: January 31, 2013
The muscular dystrophies
1Departments of Pediatrics and Neurology, The Center for Gene Therapy, The Research Institute, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio 43205, USA. kevin.flanigan@nationwidechildrens.org
Seminars in Neurology
|November 3, 2012
Summary
Muscular dystrophies involve progressive muscle weakness due to diverse molecular causes. Advances in diagnosis and gene identification are paving the way for new therapeutic strategies and clinical trials.
Area of Science:
- Neurology
- Genetics
- Molecular Biology
Background:
- Muscular dystrophies are a group of inherited disorders characterized by progressive muscle degeneration and weakness.
- These conditions exhibit significant clinical heterogeneity, stemming from diverse underlying molecular mechanisms.
- Onset can range from congenital to adulthood, impacting various age groups.
Purpose of the Study:
- To summarize recent advancements in the understanding and treatment of muscular dystrophies.
- To highlight the connection between molecular mechanisms, clinical presentation, and therapeutic development.
- To provide an overview of current research directions and clinical trial progress.
Main Methods:
- Review of recent scientific literature and clinical trial data.
- Analysis of diagnostic improvements and gene identification studies.
- Synthesis of emerging models for disease pathogenesis.
Main Results:
- Significant progress has been made in diagnostic methodologies.
- Numerous disease-associated genes have been identified, enhancing our understanding of muscular dystrophy.
- A unified model for facioscapulohumeral dystrophy pathogenesis has been developed.
- New therapeutic approaches are emerging, with some progressing to clinical trials for specific muscular dystrophies.
Conclusions:
- Recent advances in molecular genetics and diagnostics are transforming the landscape of muscular dystrophy research.
- These breakthroughs are enabling the development of targeted therapies and facilitating clinical trials.
- The field is moving towards more personalized and effective treatment strategies for patients.
Related Concept Videos
01:28Disorders of the Skeletal Muscle
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
01:21Satellite Stem Cells and Muscular Dystrophy
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
01:11Alterations in Muscle Tone lll
Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
01:25Cardiomyopathy 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...
01:26Cross-bridge Cycle
As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
01:22Myasthenia Gravis ll: Pathophysiology
The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...