Related Experiment Video
Updated: Jul 2, 2026
09:39
Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
Published on: July 29, 2016
Congenital myopathies.
Caroline A Sewry1, Cecilia Jimenez-Mallebrera, Francesco Muntoni
1Dubowitz Neuromuscular Centre, Nationally Commissioned Centre for Congenital Muscular Dystrophies and Congenital Myopathies Institute of Child Health and Great Ormond Street Hospital for Children, London, UK. c.sewry@imperial.ac.uk
Current Opinion in Neurology
|September 5, 2008
Summary
Congenital myopathies show significant pathological and clinical overlap, challenging traditional classifications. Recent studies reveal gene defects causing diverse phenotypes, necessitating updated diagnostic and therapeutic approaches.
Area of Science:
- Neurology
- Genetics
- Pathology
Background:
- Congenital myopathies represent a heterogeneous group of neuromuscular disorders.
- Understanding their pathological and clinical variability is crucial for accurate diagnosis.
Purpose of the Study:
- To review the pathological and clinical heterogeneity of congenital myopathies.
- To discuss the overlap between different congenital myopathy variants.
- To highlight recent advancements in understanding these conditions.
Main Methods:
- Literature review of recent studies on congenital myopathies.
- Analysis of pathological and clinical data.
- Examination of genetic findings and their phenotypic correlations.
Main Results:
- The spectrum of pathological changes and associated gene defects has expanded.
- Defects in the same gene can lead to diverse phenotypes, blurring traditional classifications.
- Noninvasive assessments like muscle MRI and new animal models enhance understanding of pathogenesis and therapeutic potential.
Conclusions:
- The overlap in clinical and pathological features challenges existing classifications of congenital myopathies.
- Identifying new causative genes and developing novel models are key to advancing understanding and therapy.
- Further research is needed to refine diagnostic criteria and develop targeted treatments.
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...
01:22Myasthenia 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...
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...
01:20Inborn Errors of Metabolism
Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
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...
01:20Myasthenia Gravis: Overview and Treatment
Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...