Cellular contacts in myelinated fibers of the peripheral nervous system |
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Authors: | Oguievetskaia Ksenia Goutebroze Laurence |
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Institution: | Inserm U839, Institut du Fer à Moulin, 17, rue du Fer à Moulin, Paris, France. |
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Abstract: | Myelination allows the fast propagation of action potentials at a low energetic cost. It provides an insulating myelin sheath regularly interrupted at nodes of Ranvier where voltage-gated Na+ channels are concentrated. In the peripheral nervous system, the normal function of myelinated fibers requires the formation of highly differentiated and organized contacts between the myelinating Schwann cells, the axons and the extracellular matrix. Some of the major molecular complexes that underlie these contacts have been identified. Here we review current knowledge in this field. |
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