News tagged with myelin

Related topics: multiple sclerosis

Altering the immune system to reverse paralysis

In the ultimate betrayal, one's own immune system can turn against the protective sheath that envelops neurons in the brain, leaving the body paralyzed. Researchers have developed an experimental treatment that tames the ...

Apr 03, 2017
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Sleep boosts production of brain support cells

Sleep increases the reproduction of the cells that go on to form the insulating material on nerve cell projections in the brain and spinal cord known as myelin, according to an animal study published in the September 4 issue ...

Sep 03, 2013
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Researchers solve multiple sclerosis puzzle

Evidence has long suggested multiple sclerosis (MS) is an autoimmune disease, but researchers have been puzzled because they found the same T cells that attack the myelin sheathing around nerve cells in MS patients are present ...

May 14, 2015
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Study finds a key to nerve regeneration

Researchers at the University of Wisconsin–Madison have found a switch that redirects helper cells in the peripheral nervous system into "repair" mode, a form that restores damaged axons.

Sep 14, 2016
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Multiple sclerosis: Damaged myelin not the trigger

Damaged myelin in the brain and spinal cord does not cause the autoimmune disease multiple sclerosis (MS), neuroimmunologists from the University of Zurich have now demonstrated in collaboration with researchers from Berlin, ...

Feb 27, 2012
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Myelin is a dielectric (electrically insulating) material that forms a layer, the myelin sheath, usually around only the axon of a neuron. It is essential for the proper functioning of the nervous system. Myelin is an outgrowth of a type of glial cell. The production of the myelin sheath is called myelination. In humans, the production of myelin begins in the fourteenth week of fetal development, although little myelin exists in the brain at the time of birth. During infancy, myelination occurs quickly and continues through the adolescent stages of life.

Schwann cells supply the myelin for peripheral neurons, whereas oligodendrocytes, specifically of the interfascicular type, myelinate the axons of the central nervous system. Myelin is considered a defining characteristic of the (gnathostome) vertebrates, but myelin-like sheaths have also arisen by parallel evolution in some invertebrates, although they are quite different from vertebrate myelin at the molecular level. Myelin was discovered in 1854 by Rudolf Virchow.

This text uses material from Wikipedia, licensed under CC BY-SA

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