Aug 9, 2005

Peripheral nerve lesions associated with a dominant missense mutation, E33D, of the lamin A/C gene

Neuromuscular Disorders : NMD
Anne VitalClaude Vital


Some mutations of the lamin A/C gene may be responsible for a combination of distinct phenotypes, such as muscular dystrophy and peripheral neuropathy. We describe muscle and peripheral nerve lesions in a patient with a dominant lamin A/C missense mutation, E33D. Myopathic and neurogenic patterns coexisted on muscle biopsy specimens, whereas the peripheral nerve presented a mixture of axonopathy and Schwann cell hypertrophy. A few abnormal nuclei were found in muscle fibers and Schwann cells. Our morphological findings in this case attest to the predominant axonal damage, but suggest possible involvement of Schwann cells in neuropathies related to laminopathies.

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Mentioned in this Paper

Abnormal Degeneration
Myelin Sheath
Nerve Degeneration
Entire Deltoid Muscle
Retrograde Degeneration
Soleus Muscle Structure
Structure of Common Peroneal Nerve
Structure of Superficial Peroneal Nerve

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