[Sodium channels and multiple sclerosis].

Multiple Sclerosis is a chronic demyelinating disease of the central nervous system of undetermined etiology. Damage of myelinated fibers leads to block of conduction of impulses. In myelinated axons sodium channels are expressed at high density and they play a very important role in the conduction of nervous impulse. In myelinated fibers affected by Multiple Sclerosis substantial variations of sodium channels pattern occurs. These variations can help to explain pathophysiological and clinical aspects of Multiple Sclerosis and open a new way to approach and, probably, treat this disease.