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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...

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Related Experiment Video

Updated: Jul 2, 2026

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Published on: July 29, 2016

Myofibrillar myopathies.

¹Department of Neurology, Division of Child Neurology and Neuromuscular Research Laboratory, Mayo Clinic, College of Medicine Rochester, Minnesota, USA. Selcen.duygu@mayo.edu

Current Opinion in Neurology

|September 5, 2008

Summary

This summary is machine-generated.

Recent advances reveal that mutations in Z-disk proteins cause myofibrillar myopathies, leading to muscle weakness and protein aggregates. Understanding these genetic defects is key to unraveling disease mechanisms.

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Immunolabelling Myofiber Degeneration in Muscle Biopsies

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Published on: December 5, 2019

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Last Updated: Jul 2, 2026

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Published on: July 29, 2016

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Published on: December 5, 2019

Area of Science:

Neurology
Genetics
Muscle Biology

Background:

Myofibrillar myopathies are a group of inherited muscle disorders.
These conditions are characterized by the progressive destruction of muscle structure.

Purpose of the Study:

To provide an updated overview of myofibrillar myopathies.
To highlight recent genetic discoveries and their implications.

Main Methods:

Review of recent scientific literature.
Analysis of genetic mutations and their associated protein defects.

Main Results:

Mutations in Z-disk proteins (e.g., filamin C, desmin, myotilin) cause myofibrillar myopathies.
Despite genetic diversity, clinical and morphological features are consistent, including progressive muscle weakness, cardiomyopathy, and neuropathy.
Abnormal protein accumulation and aggregate formation are hallmarks of the disease.

Conclusions:

Several disease genes have been identified, primarily affecting Z-disk components.
Molecular defects trigger a common cascade of structural damage within muscle fibers.