- A degenerative process that erodes away the myelin sheath that normally protects nerve fibers. Demyelination exposes these fibers and appears to cause problems in nerve impulse conduction that may affect many physical systems. Demyelinization is seen in a number of diseases, particularly multiple sclerosis. Diagnosis is by functional observation and by testing for myelin protein in the blood.
* * *de·my·eli·na·tion (.)dē-.mī-ə-lə-'nā-shən n the state resulting from the loss or destruction of myelin also the process of such loss or destruction
* * *n.damage to the myelin sheaths surrounding the nerve fibres in the central or peripheral nervous system. This in turn affects the function of the nerve fibres, which the myelin normally supports. Demyelination may be a primary disorder, as in multiple sclerosis. There may be associated nerve-fibre damage.
* * *de·my·elin·a·tion (de-mi″ə-lĭn-aґshən) destruction, removal, or loss of the myelin sheath of a nerve or nerves. Called also demyelinization and myelinolysis.
Medical dictionary. 2011.
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demyelination — n. damage to the myelin sheaths surrounding the nerve fibres in the central or peripheral nervous system. This in turn affects the function of the nerve fibres, which the myelin normally supports. Demyelination may be a primary disorder, as in… … The new mediacal dictionary
demyelination — noun see demyelinating … New Collegiate Dictionary
demyelination — /dee muy euh leuh nay sheuhn/, n. loss of myelin from the nerve sheaths, as in multiple sclerosis. [1930 35; DE + MYELINATION] * * * … Universalium
demyelination — noun The removal of the myelin sheath from a nerve fibre, normally as a result of disease See Also: demyelinate … Wiktionary
demyelination — de·my·e·li·na·tion … English syllables
demyelination — noun loss of the myelin covering of some nerve fibers resulting in their impaired function • Hypernyms: ↑degenerative disorder • Part Holonyms: ↑multiple sclerosis, ↑MS, ↑disseminated sclerosis, ↑disseminated multiple sclerosis … Useful english dictionary
demyelination, demyelinization — Loss of myelin with preservation of the axons or fiber tracts. Central d. occurs within the central nervous system ( e.g., the d. seen with multiple sclerosis); peripheral d. affects the peripheral nervous system ( e.g., the d. seen with Guillain … Medical dictionary
segmental demyelination — degeneration of the myelin sheath in segments between successive nodes of Ranvier, with preservation of the axon; seen in a variety of polyneuropathic conditions. Cross section of sural nerve in chronic inflammatory demyelination… … Medical dictionary
Демиелинизация (Demyelination) — заболевание, вызванное избирательным повреждением миелиновой оболочки, проходящей вокруг нервных волокон центральной или периферической нервной системы. Это в свою очередь приводит к нарушению функций миелиновых нервных волокон. Демиелинизация… … Медицинские термины
osmotic demyelination — see under syndrome … Medical dictionary