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Topic: Myelin sheath



  
 myelin sheath
Myelin spreads throughout the nervous system in stages, which vary slightly in each individual.
Oddly, MBP can also suppress EAE, and many observations suggest that an independent immune response to so-called "adjuvant" material is also necessary to EAE induction.
Protecting oligodendrocytes after brain or spinal cord injury might keep nerve cells intact.
http://www.vaccinetruth.org/myelin_sheath.htm   (528 words)

  
 Case History
The neurolemma or Sheath of Schwann is also an essential nerve component of crucial importance in the regeneration of peripheral nerve fibers.
In addition to the myelinated fibers shown here, there are unmyelinated fibers in peripheral nerve which do not show up in a myelin stain.
Notice the variation in nerve fiber and myelin sheath diameters that can be seen in slide #24.
http://cats.med.uvm.edu/cats_teachingmod/neurobiology/histology_lab/peripheral_nerve/history.html   (603 words)

  
 Society for Neuroscience Brain Briefings
But then in the 1980s, researchers found that myelin in the brain and spinal cord also gets in the way of axon regeneration.
While scientists are a long way off from helping those with paralysis ride their bike or even walk again, the study of myelin is spurring many new ideas on how to repair the damaged spinal cord and restore at least some function.
Since that time, research has confirmed myelin's blocking role by showing that interfering with its effects can aid axon repair and restore some function in rodents with spinal cord injuries.
http://web.sfn.org/content/Publications/BrainBriefings/brain_spinalcord.html   (803 words)

  
 Functional Gap Junctions in the Schwann Cell Myelin Sheath -- Balice-Gordon et al. 142 (4): 1095 -- The Journal of Cell ...
Connexin32 in oligodendrocytes and association with myelinated fibers in mouse and rat brain.
Activation of internodal potassium conductance in rat myelinated axons.
To determine whether a radial pathway exists across the myelin sheath, mouse sciatic nerves were removed, incubated in physiological
http://www.jcb.org/cgi/content/full/142/4/1095   (7135 words)

  
 Re: How does nutrition/junkfood affect the Myelin Sheath?
The myelin sheath acts sort of like an insulator to keep messages from short-circuiting from one nerve pathway to another.
Once the sheath is formed, the body will do what it can to maintain that sheath.
What 'Mother Nature' is telling us is that infants need a lot of fat...partially to help the infant's body complete the development of the myelin sheath.
http://www.madsci.org/posts/archives/jun2001/991915950.Ns.r.html   (613 words)

  
 Study Indicates Auto-Antibodies Contribute To Destruction Of Nerve Fibers Myelin Sheath, The Hallmark Of Multiple ...
The significance here is that for the first time weve been able to localize antibodies to the myelin sheath and to demonstrate their involvement in myelin breakdown.
Clearly, he said, the immune system of humans is much more complex than we had been led to believe on the basis of previous work, and much more difficult to manipulate than in rodents.
http://www.sciencedaily.com/releases/1999/02/990202072749.htm   (2290 words)

  
 An Apical-Type Trafficking Pathway Is Present in Cultured Oligodendrocytes but the Sphingolipid-enriched Myelin ...
of a cytoskeletal matrix associated with myelin from rat brain.
An Apical-Type Trafficking Pathway Is Present in Cultured Oligodendrocytes but the Sphingolipid-enriched Myelin Membrane Is the Target of a Basolateral-Type Pathway -- de Vries et al.
An Apical-Type Trafficking Pathway Is Present in Cultured Oligodendrocytes but the Sphingolipid-enriched Myelin Membrane Is the Target of a Basolateral-Type Pathway
http://www.molbiolcell.org/cgi/content/full/9/3/599   (4221 words)

  
 Myelin-associated glycoprotein and myelin galactolipids stabilize developing axo-glial interactions -- Marcus et al. ...
Axolemmal differentiation in myelinated fibers of rat peripheral nerves.
Functional breakdown of the lipid bilayer of the myelin membrane in central and peripheral nervous system by disrupted galactocerebroside synthesis.
the galactolipids are critical early mediators of myelin formation
http://www.jcb.org/cgi/content/full/156/3/567   (5361 words)

  
 Compartmentation of Fyn Kinase with Glycosylphosphatidylinositol-anchored Molecules in Oligodendrocytes Facilitates ...
Gradient fractions were collected, subjected to SDS-PAGE, and analyzed by Western blot for the distribution of the GPI-anchored proteins NCAM 120 and F3 (A) and for the Src family tyrosine kinases Fyn and Lyn (B).
Src family kinases Fyn and Lyn in oligodendrocyte and myelin DIGs.
Phosphorylated Fyn (left) and Lyn (right) were analyzed by immunoprecipitation (A) and compared with total Fyn and Lyn protein in the same samples analyzed by Western blot (B).
http://www.jbc.org/cgi/content/full/274/41/29042   (6332 words)

  
 Biology of Oligodendrocyte and Myelin in the Mammalian Central Nervous System -- Baumann and Pham-Dinh 81 (2): 871 -- ...
The importance of myelin in human development is highlighted by its involvement in an array of different neurological diseases
There are specific glycolipids in oligodendrocytes and myelin, such as galactosylceramides (GalC) (galactocerebrosides) and
a pathway through which cytoplasm on the outside of the sheath
http://physrev.physiology.org/cgi/content/full/81/2/871   (10051 words)

  
 A Look at Myelin and Myelin-Related Disorders
The characteristics and specific functions of myelin have not fully been explored by researchers, and as far as I can tell most current research efforts are initiated by groups that research myelin-related disorders, such as the Myelin Profect.
As we have seen, the production, make-up and functions of myelin are very complex, and they are interrupted in very specific ways in myelin-related disorders, some of which were described here.
These different ways of affecting the myelin lead to different symptoms in the patient, which explains the multitude of demyelinating disorders that have so far been identified These different disorders often have very fine distinctions.
http://serendip.brynmawr.edu/bb/neuro/neuro01/web1/Blumenfeld.html   (1129 words)

  
 The proteolipid protein gene and myelin disorders in man and animal models -- Yool et al. 9 (6): 987 -- Human Molecular ...
Quantitative aspects of the glia and myelin in the spinal cord and optic nerve.
vital structural components necessary for myelin assembly and
A range of phenotypes develop, from severe dysmyelination (associated
http://hmg.oupjournals.org/cgi/content/full/9/6/987   (4466 words)

  
 [No title]
These myelinated connections form the wiring circuitry of both the central (brain and spinal cord) and peripheral nervous systems.
"We're interested in the basic molecular biology and biochemistry of myelin formation, maintenance and function - a very basic approach to what myelin is, how it's formed and what it does," he said.
He adds that the molecular abnormalities associated with the absence of galactolipids may also play a role in myelin loss and its behavioral effects.
http://www.mult-sclerosis.org/news/Dec1999/MyelinSheathResearch.html   (763 words)

  
 Penn Researchers Prove "Short-Cut" Function of Myelin Sheath Channel
This research was supported by grants from the National Institutes of Health and the Muscular Dystrophy Association.
"Our most recent work directly demonstrates the channel's function in the myelin sheath for the first time," says Scherer.
Penn Researchers Prove "Short-Cut" Function of Myelin Sheath Channel
http://www.uphs.upenn.edu/news/News_Releases/aug98/myelin.shtml   (637 words)

  
 Responses - Myelin Sheath Hormone
IGF-I has been tried in experimental animal models of ataxia, but it has not been tried in human subjects with FA.
Although Friedreich's is central rather than peripheral will this be a possible treatment for FA?
Tetsuo Ashizawa, M.D., Baylor University, Houston, TX IGF-I has many effects on the cellular machinery in many tissues including muscles, heart, and the nervous system including myelinating cells.
http://www.mdausa.org/experts/question.cfm?id=1813&disease=92   (234 words)

  
 U-M scientists use insulin-like growth factor to grow new membranes around neurons
After 48 hours, 50 percent of the neur ons in the IGF-I-supplemented cultures had a myelin sheath and looked just like freshly dissected dorsal rat ganglia.
"The results suggest IGF-I promotes myelination by triggering a series of biochemical changes which help Schwann cells move and attach to nerve fibers," Russell said.
The devastating symptoms of these diseases are caused by the death or degeneration of peripheral nerves.
http://www.umich.edu/~urecord/9798/Oct29_97/igf.htm   (634 words)

  
 Myelin sheath disorder
How many prior 3-session Maharishi Vedic Vibration Technology consultations have you had for Myelin sheath disorder?
Your answers will enable us to develop your personalized consultation.
you experience Myelin sheath disorder or its symptoms.
http://www.vedicvibration.com/apply/neurological/myelin_sheath.html   (160 words)

  
 Myelin - Wikipedia, the free encyclopedia
The immune system may play a role in demyelination associated with such diseases.
Demyelination is a loss of myelin and is the root cause of symptoms experienced by patients with diseases such as multiple sclerosis and transverse myelitis.
These techniques include surgically implanting oligodendrocytes in the central nervous system and inducing myelin repair with certain antibodies.
http://en.wikipedia.org/wiki/Myelin   (350 words)

  
 NPEL: Myelin Sheath Diseases
Leads to breakdown of myelin and the accumulation of sulfatide-rich lipids that appear as small globules of metachromatic material in the white matter.
Demyelinating- The myelin sheath, once properly formed and funcioning, is destrotyed by a disease process.
OBJECTIVES: The objectives of this hour are to distinguish between dysmyelinating and demyelinating diseases, to consider briefly some of the dysmyelinating diseases, to recognize that multiple sclerosis is the most important demyelinating disease, and to consider its clinical, epidemiologic, pathologic and therapeutic features.
http://www.uvm.edu/~jkessler/NP/neumyshe.htm   (598 words)

  
 H
The myelin sheath is external and contiguous with the
Neurons can be divided into a number of structural and functional types, including the number of processes arising from the cell body.
  This Schwann cell insulation of the nerve and unmyelinated areas between the myelin called “Nodes of Ranvier” help increase the speed of the nerve impulse.
http://www.mc.vanderbilt.edu/histology/word/2003/nerves.htm   (977 words)

  
 The Myelin Project: Glossary
MRI: An acronym for magnetic resonance imaging, it is a non-invasive method of obtaining images of internal soft bodily tissue such as the brain and the spinal cord through the use of powerful magnets and radio waves.
Multiple sclerosis: A disorder of the central nervous system of unknown cause in which the body's immune system attacks myelin in the brain and spinal cord.
Metachromatic leukodystrophy: In this disease the lack of an enzyme, Arylsufatase-A (ASA), causes the accumulation of sulfatide deposits in the brain, which in turn leads to myelin breakdown.
http://www.myelin.org/glossary.htm   (1585 words)

  
 THE MERCK MANUAL--SECOND HOME EDITION, Introduction in Ch. 92, Multiple Sclerosis and Related Disorders
When babies are born, many of their nerves lack mature myelin sheaths.
Myelin sheaths do not develop normally in children with certain rare hereditary diseases, such as Tay-Sachs disease, Niemann-Pick disease, Gaucher's disease, and Hurler's syndrome.
Disorders that cause demyelination in the central nervous system (the brain and spinal cord) and have no known cause are called primary demyelinating disorders.
http://www.merck.com/mmhe/sec06/ch092/ch092a.html   (245 words)

  
 Anatomy
It seems to be less efficient when the white matter in the same place is repeatedly damaged and the longer the process of demyelination lasts.
Myelin is formed within the central nervous system by the oligodendrocyte and in the peripheral nervous system by the Schwann cell.
Myelin in the peripheral nervous system is formed by Schwann cells, but a Schwann cell only myelinates one axon by wrapping itself around it.
http://www.dokkyomed.ac.jp/dep-k/cli-path/a-super/super-d-2.html   (501 words)

  
 Fibrin Is Critical In Regeneration Of Myelin Sheath
These results point the way toward a potentially new treatment for nerve injuries and suggest that preventing fibrin deposition may be a means to enhance the nervous system's natural regenerative capacities.
Fibrin Is Critical In Regeneration Of Myelin Sheath
Myelin damage causes nerve signals to be slowed, shorted, or blocked, resulting in the well-known difficulties MS sufferers have in controling the muscles to which those nerves lead.
http://unisci.com/stories/20021/0314026.htm   (345 words)

  
 All about Guillain-Barré Syndrome: The damage mechanism
Peripheral nerves and spinal roots are the major sites of demyelination, but cranial nerves may also be involved.
Long-term paralysis in some GBS patients is thought to be caused by permanent damage to both axons and myelin sheaths.
It may be responsible for a less favourable prognosis (outcome), as axons regenerate after a long delay compared to the myelin sheath, which heals faster.
http://www.jsmarcussen.com/gbs/uk/damage.htm   (1344 words)

  
 Publisher description for Library of Congress control number 2003062808
This book represents a unique research reference on myelin biology and will serve as the definitive resource for both the professional clinical and basic scientist.
Myelin Biology and Disorders brings together in one place, the recent advances in molecular and cellular biology along with visual data from MRI, confocal microscopy and high voltage EM techniques to provide new insights into disease mechanisms.
* Includes forward-looking section on potential therapeutic interventions in myelin diseases
http://www.loc.gov/catdir/description/els041/2003062808.html   (227 words)

  
 Myelin sheath survival following axonal degeneration in doubly myelinated nerve fibers -- Kidd and Heath 11 (12): 4003 ...
data suggest further that myelin breakdown in Wallerian degeneration may be
Myelin sheath survival following axonal degeneration in doubly myelinated nerve fibers
outer sheath survived degeneration of the axon and inner sheath.
http://www.jneurosci.org/cgi/content/abstract/11/12/4003   (334 words)

  
 Myelin components
Associated with clustering of voltage-gated Na channels at nodal axolemma
Carbohydrate epitope may be involved in homophilic cell-cell interactions
Stabilizes contacts between myelinating axons and glial processes
http://www.neuro.wustl.edu/neuromuscular/lab/schcell.html   (411 words)

  
 myelin sheath support - Find, Compare, and Buy myelin sheath support at Shopping.com
The results did not include what I was searching for.
See all Health Aids matching "myelin sheath support" (4)
Tell us why our search results for myelin sheath support were not helpful.
http://www.shopping.com/xGS-myelin_sheath_support   (172 words)

  
 NFL.com - NFL News
The foundation released a statement saying the Kelly family is grateful for the support people have shown.
Born in 1997, Hunter Kelly was given no more than three years to live after being diagnosed with Krabbe disease, an inherited degenerative disorder of the central and peripheral nervous systems.
The disease hinders development of the myelin sheath, a fatty covering that protects the brain's nerve fibers.
http://www.nfl.com/news/story/8706898   (668 words)

  
 Wired News: Stem Cells Mend Spinal Cords
Two-thirds of the rats in the study regained some hind limb movement, the researchers said.
The scientists hope the approach, which generated a new fatty cover for the spinal cord cells called the myelin sheath, also could be shown to work in people.
Rats given the treatment, using stem cells taken from rat embryos, could move their legs again after their spines were severed in the lab, said the researchers’ report in the
http://www.wired.com/news/medtech/0,1286,68331,00.html?tw=newsletter_topstories_html   (502 words)

  
 Planetary Formulas Myelin Sheath Support -- 965 mg - 90 Tablets - Vitacost
Prices and promotions are subject to change without notice.
Supports the myelin sheath surrounding certain nerve tissues.
Formulas By Michael Tierra, L.Ac., O.M.D. Planetary Formulas® Myelin Sheath Support™ is a comprehensive botanical preparation designed to support the fat-like insulating sheath (myelin) that surrounds certain nerve tissues.
http://www.vitacost.com/PlanetaryFormulasMyelinSheathSupport   (434 words)

  
 Structure of the Neuron - Myelin Sheath
The symptoms that result from this demyelination are determined by the functions normally contributed by the affected neurons.
The glial cells forming myelin sheaths are called oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system.
Disruption of muscle control, speech and visual disturbances are common.
http://psych.athabascau.ca/html/Psych289/Biotutorials/1/myelin.shtml   (246 words)

  
 World of MS - About MSIF - Myelin sheath
During an attack of symptoms, or relapses, the sheath becomes inflamed, impeding the flow of signals from the brain.
The inflammation of the sheath does not always result in visible symptoms - so MRI assessments in clinical trials do not always relate to disability.
The coating of the nerve fibers of the axon is referred to as the myelin sheath.
http://www.ifmss.org.uk/en/about_msif/glossary/myelin_sheath.html   (96 words)

  
 THE MERCK MANUAL, Sec. 14, Ch. 180, Demyelinating Diseases
Extensive myelin loss is usually followed by axonal degeneration and often by cell body degeneration, both of which may be irreversible.
Many congenital metabolic disorders (eg, phenylketonuria and other aminoacidurias; Tay-Sachs, Niemann-Pick, and Gaucher's diseases; Hurler's syndrome; Krabbe's disease and other leukodystrophies) affect the developing myelin sheath, mainly in the CNS.
Myelin sheaths, which cover many nerve fibers, are composed of lipoprotein layers formed in early life.
http://www.merck.com/pubs/mmanual/section14/chapter180/180a.htm   (415 words)

  
 The Myelin Sheath
This fatty substance protects the fiberlike axons and speeds electrical signals as they travel along nerve pathways to carry out vital functions such as movement.
Multiple sclerosis causes myelin to disintigrate, causing an obstruction of signal flow and potentially leading to the loss of motor coordination and other functions.
Myelin, 80 percent lipid and 20 percent protein, is produced in the form of a tube surrounding the axon, by supporting cells of the CNS called oligodendrocytes.
http://www.udel.edu/skeen/Hpages/MS/MyelinSheath.html   (76 words)

  
 Science Forums and Debate - Myelin Sheath
You can see the importance of myelination in, for example, multiple sclerosis which results in the progressive demyelinates of nerves.
Why is there only myelin sheath on the white matter (the outer part of the brain) and not on the grey matter (the inner part of the brain), why does not the grey matter need the insulation, what is its function?
http://www.scienceforums.net/forums/printthread.php?t=9597   (1076 words)

  
 Human Myelin Basic Protein
Myelin basic protein(MBP) is one of the most important proteins of the myelin sheath.
Knowledge of the tertiary structures of the MBP isoforms and charge isomers is essential to understanding the organization of the myelin membrane and the mechanisms of development of autoimmunity in multiple sclerosis.
It has been postulated that MBP is the agent of autoimmunity and that post-translational modifications of MBP play a key role in the demyelinating process at the molecular level(2).
http://homepages.strath.ac.uk/~eap00117   (948 words)

  
 myelin - multiple sclerosis encyclopaedia
It seems likely from animal models of multiple sclerosis (experimental autoimmune encephalomyelitis) that initial relapsing-remitting phases of the disease centre on one antigen component, perhaps of myelin basic protein, but that, as the disease progresses, antigens from other proteins become involved.
Myelin occurs in both the Central Nervous System (CNS) and the Peripheral Nervous System (PNS) but the cells that produce the myelin differ.
This means that the sodium and potassium ions that contribute to the resting potential do not have far to move when the action potential occurs.
http://www.mult-sclerosis.org/myelin.html   (470 words)

  
 RemedyFind: patient ratings of Bovine Myelin Sheath Extract for Multiple Sclerosis
The theory is that they provide a source of myelin protective proteins which can slow the loss of, and even help rebuild, the myelin sheath in MS patients.
RemedyFind: patient ratings of Bovine Myelin Sheath Extract for Multiple Sclerosis
Of some concern is that the supplement could contain particles that cause the deadly neurological disorder spongiform encephalopathy, "mad cow disease" though no cases have been reported to be caused by taking supplements containing cow brain / spinal material.
http://www.remedyfind.com/rem.asp?ID=1638   (473 words)

  
 Anatomy of the nervous system
Most axons in any nerve are myelinated, which gives nerves their glistening white appearance.
In the central nervous system the cells that form the myelin sheath are called oligodendroglia; in the peripheral nervous system they are simply called axon sheath cells.
We are particularly interested in those that form myelin sheaths around axons in the central and peripheral nervous systems.
http://www.tele.ucl.ac.be/PEOPLE/OC/these/node43.html   (584 words)

  
 The Myelin Project: Home
Myelin is produced by specialized cells: oligodendrocytes in the central nervous system, and Schwann cells in the peripheral nervous system.
Hope for Multiple Sclerosis, the Leukodystrophies, and other Myelin Disorders
...an international grassroots organization whose mission is to accelerate medical research on myelin repair.
http://www.myelin.org   (204 words)

  
 Minnetta V. Gardinier, Ph.D.>
Disruption of myelination during development can lead to mental retardation, movement disorders, and other neurological deficits.
Our research efforts focus on gaining a better understanding of the molecular and cellular biology of oligodendrocytes and the process of myelination.
In particular, we are studying myelin/oligodendrocyte glycoprotein (MOG), which is specifically targeted for immune attack in MS.
http://www.medicine.uiowa.edu/pharmacology/faculty/gardinier.html   (405 words)

  
 Multiple Sclerosis: Facts, Disease Prevention and Treatment Strategies
Multiple Sclerosis is a progressive disease caused by the gradual destruction of the myelin sheath that surrounds the nerve cells in the brain and spinal cord.
The cause of MS remains unknown, but the most widely accepted cause is thought to be an autoimmune disorder; where the body defense system treats the myelin in the central nervous system as foreign, and gradually destroys it.
Attacks vary considerably in severity and frequency from person to person.
http://www.healingwithnutrition.com/mdisease/multiplesclerosis/multiplesclerosis.html   (608 words)

  
 Charcot-Marie-Tooth (CMT) 1B
This indicates that both patients have Charcot-Marie-Tooth disease type 1B.
Segmental remyelination was found in all teased myelinated nerve fibers.
Lagueny, A., Latour, P., Vital, A. et al., Peripheral myelin modification in CMT1 B correlates with MPZ gene mutations.
http://www.athenadiagnostics.com/site/content/diagnostic_ed/case_studies/cmt1b.asp   (645 words)

  
 Alexander Disease
It is one of a group of genetic disorders called the leukodystrophies that affect growth of the myelin sheath, the fatty covering--which acts as an insulator--on nerve fibers in the brain.
Alexander disease, which affects mostly males, usually begins at about 6 months of age.
http://healthlink.mcw.edu/article/921383447.html   (217 words)

  
 Myelin Sheath Support 45 tabs by Planetary Formulas
This formula was developed by herbalist Alan Tillotson, a clinician with 20 years of clinical experience and is a blend of Chinese and Ayurvedic botanicals used for their tonifying properties and key minerals to support a healthy nervous system.
You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem.
Myelin Sheath Support 45 tabs by Planetary Formulas is a comprehensive botanical preparation, designed to support the fat-like insulating sheath (myelin) that surrounds certain nerve tissues.
http://www.theherbalhealthstore.com/pfmyelin.html   (303 words)

  
 Multiple Sclerosis at Total Health Discount Vitamins
Researchers believe that the damage to myelin results from an abnormal response by the body’s immune system.
When myelin or the nerve fiber is destroyed or damaged, the ability of the nerves to conduct electrical impulses to and from the brain is disrupted, and this produces the various symptoms of MS.
There is nodefinitive link to one virus or another which could be responsible for the demyelination (destruction of the myelin sheath surrounding and insulating the nerve fibers of the central nervous system) as seen in MS.
http://www.totaldiscountvitamins.com/Merchant/ms.htm   (758 words)

  
 [Frontiers in Bioscience 8, d477-490, January 1, 2003]
Myelin sheaths in the optic nerve of adult Fyn mutants (b), in contrast, display a normal morphology with a well developed periaxonal cytoplasmic collar (arrowheads in b).
Myelinated axons in the optic nerves of wild-type mice.Virtually all axons in the optic nerve of adult wild-type mice are surrounded by a myelin sheath (a).
Cytoplasm on the outside of CNS sheaths is confined to the external tongue process (some labeled with asterisks in b).
http://www.bioscience.org/2003/v8/d/1028/figures.htm   (1071 words)

  
 Facts on X-Linked Adrenoleukodystrophy (X-ALD)
Ultimately the myelin sheath surrounding the nerves is destroyed causing neurologic problems, and the adrenal gland malfunction causes Addison's Disease.
X-ALD is a peroxisomal storage disease whereby abnormal function of peroxisomes leads to the accumulation of very long-chain fatty acids (VLCFA) in tissues of the body, especially the brain and the adrenal glands.
While some of the VLCFAs that accumulate come from the diet, they are derived mainly from production within the body.
http://www.x-ald.nl/facts.htm   (1067 words)

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