myelinization


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myelinization

 [mi″ĕ-lin″ĭ-za´shun]
production of myelin around an axon. Called also myelination.

my·e·li·na·tion

(mī'ĕ-li-nā'shŭn),
The acquisition, development, or formation of a myelin sheath around a nerve fiber.

myelinization

/my·elin·i·za·tion/ (mi″ĕ-lin″ĭ-za´shun) the act of adding myelin; formation of a myelin sheath.

myelinization

[mī′əlin′īzā′shən]
Etymology: Gk, myelos + izein, to cause
development of the myelin sheath around a nerve fiber. Also called myelinogenesis.

my·e·li·na·tion

, myelinization (mī'ĕ-li-nā'shŭn, nī-zā'shŭn)
The acquisition, development, or formation of a myelin sheath around a nerve fiber.

myelination, myelinization

production of myelin around an axon.

Patient discussion about myelinization

Q. What is Myelin?

A. As part of the nervous system, myelin lines nerve fibers to protect and insulate neurons. Myelin aids in the quick and accurate transmission of electrical current carrying data from one nerve cell to the next. When myelin becomes damaged, the process involves numerous health conditions, including multiple sclerosis.

Dysfunction in the myelin of nerve fibers causes the interruption of smooth delivery of information. Either nerve impulses can be slowed, such that we can't pull our hand away in time to avoid being burned, or mixed up, so we aren't able to determine if a pan is hot in the first place. This is akin to a pet chewing on a wire, causing the device to dysfunction. When problems arise in nerves of the PNS, neuropathy might result, and when injury affects the nerves of the CNS, multiple sclerosis is often diagnosed.

More discussions about myelinization
References in periodicals archive ?
The final process is myelinization, during which a "layer of insulation called myelin progressively envelops these nerve fibers making them more efficient, just like the insulation on electric wires improves their conductivity" (NIMH, 2003, p.
Research concerning nutrition and brain development has suggested an important link between essential fatty acid deficiencies in infants and a decrease in the speed and efficacy of this myelinization process (Wainwright, 2002).
During the myelinization process, the formation of insulating sheathes around nerve cells allows cells to communicate at a faster speed and to integrate multiple stimuli simultaneously (NIMH, 2001).
The adolescent brain, in the processes of pruning, proliferation, and myelinization, develops in a predictable way, in a very set back-to-front pattern (NIMH, 2001).
Incomplete myelinization also makes the infant brain more susceptible to shearing forces.
2003) as well as synaptogenesis and myelinization, all processes that begin during the first trimester of pregnancy (Rice and Barone 2000).
Levine (1985) posited the corpus callosum connecting the two cerebral hemispheres to be the possible locus of age differences in face recognition tasks, and suggested that the poor performance of young children before the age of 10 years is due to incomplete myelinization of the corpus callosum.
Long-term deficiency leads to inadequate myelinization in the medulla spinalis and brain and is manifested with irritability, apathy, loss of appetite and developmental delay in infants (2).
A GD 18 exposure onset would also increase lactational transfer of TCDD to offspring, presumably affecting both synaptogenesis and myelinization processes.
This is related with brain development and central nervous system myelinization (2, 3).
In some studies, it was shown that ID decreased expression of dopamin receptors, disrupted myelinization or disrupted the function of various enzymes involved in the nerve tissue (17-19).