When nerves are injured, Schwann cells—a key cell in peripheral nerve function and nerve insulation—assume a new role and identity as repair cells.
John Svaren, PhD – Slide of the Week
Peripheral nerve myelination is adversely affected in the most common form of the hereditary peripheral neuropathy called Charcot-Marie-Tooth Disease. This form, classified as CMT1A, is caused by a 1.4 Mb duplication on chromosome 17, which includes the abundantly expressed Schwann cell myelin gene, Peripheral Myelin Protein 22 (PMP22).
Researchers Discover Gene Crucial For Nerve Cell Insulation
Researchers funded by the National Institutes of Health have discovered how a defect in a single master gene disrupts the process by which several genes interact to create myelin, a fatty coating that covers nerve cells and increases the speed and reliability of their electrical signals.