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Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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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...
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Myasthenia Gravis: Diagnostic Tests01:15

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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
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Myasthenia Gravis: Overview and Treatment01:20

Myasthenia Gravis: Overview and Treatment

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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...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Satellite Stem Cells and Muscular Dystrophy01:21

Satellite Stem Cells and Muscular Dystrophy

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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...
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Related Experiment Video

Updated: Dec 14, 2025

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
09:39

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Published on: July 29, 2016

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Other Myopathies.

Yessar Hussain1, Samantha Miller2

  • 1UT Austin/Dell Medical School, Austin, TX, USA; Austin Neuromuscular Center, 3901 Medical Parkway, Suite 300, Austin, TX 78756, USA.

Neurologic Clinics
|July 25, 2020
PubMed
Summary
This summary is machine-generated.

Diagnosing myopathies, which cause muscle weakness and pain, requires understanding complex muscle networks. This review uses case studies to explore diagnostic tools for toxic, metabolic, mitochondrial, and congenital myopathies.

Keywords:
Drug-induced myopathyMetabolic myopathyMyalgiaNecrotizing myopathyPompe diseaseProgressive weaknessStatin myopathyToxic myopathy

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In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
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Tissue Triage and Freezing for Models of Skeletal Muscle Disease
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Related Experiment Videos

Last Updated: Dec 14, 2025

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Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

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In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
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Tissue Triage and Freezing for Models of Skeletal Muscle Disease
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Area of Science:

  • Muscle physiology and pathology
  • Neurology and neuromuscular disorders
  • Diagnostic medicine

Background:

  • Healthy muscle function depends on intricate networks involving proteins, ion channels, and ATP.
  • Myopathies manifest with nonspecific symptoms like weakness, pain, cramping, and hypotonia.
  • Causes of myopathies include genetic mutations, toxins, systemic diseases, and inflammation.

Observation:

  • Clinical presentation of myopathies is often ambiguous, complicating diagnosis.
  • A systematic approach is crucial for differentiating various myopathy subtypes.
  • Case-based learning enhances understanding of clinical reasoning in diagnosing muscle disorders.

Findings:

  • This review details diagnostic tools and clinical reasoning for myopathies.
  • Focus is placed on toxic, metabolic, mitochondrial, and late-onset congenital myopathies.
  • Accurate diagnosis relies on integrating clinical findings with specific diagnostic tests.

Implications:

  • Improved diagnostic strategies can lead to earlier and more accurate identification of myopathies.
  • Understanding specific myopathy types allows for targeted treatment and management.
  • This case-based review serves as a valuable resource for clinicians managing patients with suspected myopathies.