| 单词 | myelin sheath |
| 例句 | The degenerative disease, which often strikes boys between ages 4 and 10, causes the brain’s nerve cells to lose their myelin sheath, leading to an inability to speak, blindness and deafness. Her two sons had a rare disease. After their deaths, she left the Air Force to become a nurse. 2019-05-22T04:00:00Z The disease attacks instead the insulating myelin sheath, which is essential for the proper functioning of the nervous system. Stem cell therapy gives hope to MS patients 2016-06-09T04:00:00Z Brothers Michael and Matthew Clark both suffer from a rare form of leukodystrophy, a genetic disorder that attacks the myelin sheath covering the nerve fibres of the brain. TV review: The Curious Case of the Clark Brothers; Dying for Clear Skin 2012-11-26T22:00:01Z The idea of myelination, or the formation of a myelin sheath around a nerve fiber — it’s what allows a nerve impulse to move faster — is apparent throughout this effervescent, twitchy piece. Review: At Fall for Dance Festival, Female Power 2015-10-09T04:00:00Z MS, which affects about 100,000 people in the UK, occurs when the immune system attacks the protective myelin sheath that surrounds nerve fibres and acts as an insulator. Lack of vitamin D may cause multiple sclerosis, study finds 2015-08-25T04:00:00Z Projections from the oligodendrocyte wrap around the axon, forming a myelin sheath. Fundamentals of Biology 2015-01-01T00:00:00Z Some axons are covered with a special structure called a myelin sheath, which acts as an insulator to keep the electrical signal from dissipating as it travels down the axon. Concepts of Biology 2013-04-25T00:00:00Z Her treatment involves an infusion every six weeks to help reduce the amount of damage and scarring to the myelin sheath. Livvy Haydock: 'Disabled gangsters supported me with my MS diagnosis' 2023-04-25T04:00:00Z They expelled relatively low amounts of cholesterol, which made them less adept at forming myelin sheaths. This Is How an Alzheimer’s Gene Ravages the Brain 2022-11-18T05:00:00Z Glial cells—often thought of as the “supporting cast” of the nervous system—outnumber neurons and play a role in the development of neurons, buffer harmful ions and chemicals, and provide myelin sheaths around neurons. Biology for AP Courses 2022-06-09T00:00:00Z Outside the plasma membrane of the axon is the myelin sheath, which is composed of the tightly wrapped plasma membrane of a Schwann cell. Anatomy and Physiology 2013-06-19T00:00:00Z The myelin sheath is produced by glial cells. Concepts of Biology 2013-04-25T00:00:00Z If we focus on a single neuron - one instrument in the brain's orchestra - it is coated in a fatty layer of insulation called the myelin sheath. Is a virus we all have causing multiple sclerosis? 2022-04-13T04:00:00Z The researchers also found that in mice with two copies of APOE4, cyclodextrin seemed to flush cholesterol out of the brain, improve the flow of cholesterol into myelin sheaths and boost the animals’ cognitive performance. This Is How an Alzheimer’s Gene Ravages the Brain 2022-11-18T05:00:00Z Along the axon there are periodic gaps in the myelin sheath. Biology for AP Courses 2022-06-09T00:00:00Z The nucleus and cytoplasm of the Schwann cell are on the edge of the myelin sheath. Anatomy and Physiology 2013-06-19T00:00:00Z In salamanders, far fewer of these nerve fibers were coated with myelin sheaths, which allow signals to reach the brain more quickly. Junk DNA Deforms Salamander Bodies 2022-02-02T05:00:00Z Now he's not only a fully convinced convert, he thinks he can join the dots between the virus and the myelin sheath. Is a virus we all have causing multiple sclerosis? 2022-04-13T04:00:00Z The disease occurs when antibodies attack a protein found on the protective myelin sheath that surrounds nerve cells in the optic nerve and less often, the brain and spinal cord. ‘I’m going blind. Somebody’s got to help me.’ 2022-01-14T05:00:00Z The nodes of Ranvier, illustrated in Figure 26.13 are gaps in the myelin sheath along the axon. Biology for AP Courses 2022-06-09T00:00:00Z Myelin is a lipid-rich sheath that surrounds the axon and by doing so creates a myelin sheath that facilitates the transmission of electrical signals along the axon. Anatomy and Physiology 2013-06-19T00:00:00Z In earlier work, Hauser and his colleagues found that the tissue damage in MS is primarily directed by B cells, which attack the myelin sheath protecting nerves. Epstein-Barr Virus Found to Trigger Multiple Sclerosis 2022-01-13T05:00:00Z His study, published in the journal Nature, showed the myelin sheath suffers from mistaken identity and is attacked by a confused part of the immune system that thinks it is fighting EBV. Is a virus we all have causing multiple sclerosis? 2022-04-13T04:00:00Z MS develops when immune cells go awry and attack the myelin sheaths that insulate nerve fibers in the spinal cord and brain. Two decades of soldiers’ medical records implicate common virus in multiple sclerosis 2022-01-12T05:00:00Z All myelin sheaths are located in the gray matter, which transmit signals along the brain and spinal cord through the gray matter. Biology for AP Courses 2022-06-09T00:00:00Z The appearance of the myelin sheath can be thought of as similar to the pastry wrapped around a hot dog for “pigs in a blanket” or a similar food. Anatomy and Physiology 2013-06-19T00:00:00Z In the disease, inflammation damages the myelin sheath that insulates nerve cells, ultimately disrupting signals to and from the brain and causing a variety of symptoms, from numbness and pain to paralysis. Epstein-Barr Virus Found to Trigger Multiple Sclerosis 2022-01-13T05:00:00Z MS is a neurodegenerative disease, in which the immune system mistakenly attacks the fatty myelin sheath that protects the nerves in a similar way to insulation around electric wires. Caroline Wyatt: MS research 'the urgent search for hope' 2020-12-18T05:00:00Z A study published last year, for instance, showed that the technology was sensitive to damage found in multiple sclerosis, a disease involving the breakdown of the myelin sheaths that insulate neural wiring1. Oxford Brain Diagnostics: turning MRI into a diagnosis tool for dementia 2020-06-29T04:00:00Z The myelin sheath is not actually part of the neuron. Biology for AP Courses 2022-06-09T00:00:00Z For oligodendrocytes, the rest of the cell is separate from the myelin sheath as a cell process extends back toward the cell body. Anatomy and Physiology 2013-06-19T00:00:00Z Prior to our findings, there was no known explanation for how the myelin sheath could be thinned to slow signals, aside from disease damage. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z MRIs are already used to show if there is damage to the myelin sheath, the layer surrounding nerves in the brain and spinal cord. Early MS scans 'can predict long-term prognosis' 2019-07-24T04:00:00Z Multiple sclerosis is a disease of the central nervous system that sparks the immune system to attack the protective myelin sheath covering the nerves. Selma Blair opens up about multiple sclerosis in poignant new interview 2019-02-26T05:00:00Z Glia guide developing neurons to their destinations, buffer ions and chemicals that would otherwise harm neurons, and provide myelin sheaths around axons. Biology for AP Courses 2022-06-09T00:00:00Z What aspects of the cells in this image react with the stain that makes them the deep, dark, black color, such as the multiple layers that are the myelin sheath? Anatomy and Physiology 2013-06-19T00:00:00Z The myelin sheath is attached to the axon by a spiral junction flanking the node of Ranvier. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z These DNA fragments affect the expression of two genes: UBR4, which regulates the development of neurons, and PHLPP1, which affects the development of myelin sheaths that insulate axons, or projections of neurons. Why modern humans have round heads 2018-12-13T05:00:00Z Studying the organ 6 months after chemotherapy ended—a long time in the life of a mouse—the researchers saw that “the myelin sheaths were thinner,” Monje says, which would disrupt brain signaling. How does chemo brain work? One cancer drug might interfere with brain signaling 2018-12-06T05:00:00Z Oligodendrocytes, shown in Figure 26.8b form myelin sheaths around axons in the CNS. Biology for AP Courses 2022-06-09T00:00:00Z Many axons are wrapped by a myelin sheath, a lipid derivative that acts as an insulator and speeds up the transmission of the action potential. Anatomy and Physiology 2013-06-19T00:00:00Z Both widening of the nodal gap and thinning of the myelin sheath slow the speed of impulse transmission. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z Cell and organelle membranes are made mainly of lipids, as are the myelin sheaths enveloping axons. Transparent tissues bring cells into focus for microscopy 2018-12-03T05:00:00Z A hallmark of the disease multiple sclerosis is an inflammatory autoimmune attack1 on the proteins of the myelin sheath, a structure that wraps around the nerve fibres that project from neurons. Immune-cell crosstalk in multiple sclerosis 2018-10-21T04:00:00Z Adults with MS, a nervous system disease that damages the material that surrounds and protects nerve cells, called the myelin sheath. For people with MS, a healthy diet is linked to less disability, fewer symptoms 2017-12-15T05:00:00Z For Schwann cells, the outermost layer of the cell membrane contains cytoplasm and the nucleus of the cell as a bulge on one side of the myelin sheath. Anatomy and Physiology 2013-06-19T00:00:00Z The thickness of the myelin sheath is not fixed; instead it reflects a dynamic balance between the addition of layers next to the axon and removal of the outer layer under control of the astrocyte. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z Researchers at Harvard Medical School showed that in genetically engineered mice with A.L.S., a substance called necrostatin-1 not only restored the myelin sheath and stopped axon damage but also prevented limb weakness. A New Drug for A.L.S., but the Diagnosis Remains Dire 2017-05-29T04:00:00Z The myelin sheath provides protection and nourishment to nerve fibres and enables efficient transmission of nerve impulses. Immune-cell crosstalk in multiple sclerosis 2018-10-21T04:00:00Z It destroys the protective coating that wraps round nerves called the myelin sheath. Multiple sclerosis drug is 'landmark' - BBC News 2016-12-21T05:00:00Z Because a micrometer is 1/1000 of a millimeter, this means that the length of a myelin sheath can be 100–1000 times the diameter of the axon. Anatomy and Physiology 2013-06-19T00:00:00Z The myelin sheath is crucial for optimal transmission, but people begin to lose myelin in the cerebral cortex in their senior years. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z “He is leaning towards an infection or potentially a blood clotting disorder that caused damage to the myelin sheath surrounding the spinal cord,” Grant said. Janesville boy fights back from nearly complete paralysis 2016-07-23T04:00:00Z Without that protein, the fats build up and gradually destroy myelin sheaths that protect nerves in the brain. Gene therapy halts rare brain disease in young boys 2016-05-06T04:00:00Z Ocrelizumab kills a part of the immune system - called B cells - which are involved in the assault on the myelin sheath. Multiple sclerosis drug is 'landmark' - BBC News 2016-12-21T05:00:00Z If the myelin sheath were drawn to scale, the neuron would have to be immense—possibly covering an entire wall of the room in which you are sitting. Anatomy and Physiology 2013-06-19T00:00:00Z Our experiments support a new hypothesis: the myelin sheath’s changes in thickness represent a new form of nervous system plasticity governed by the addition and subtraction of myelin. The Brain Learns in Unexpected Ways 2020-03-12T04:00:00Z Multiple sclerosis affects a person's brain and spinal cord by damaging the myelin sheath, the insulating layer that surrounds and protects nerve cells, according to the U.S. Low Prenatal Vitamin D Linked to Later MS in Offspring 2016-03-07T05:00:00Z Leukodystrophies affect the myelin sheath that insulates nerve cells, which are essential to the functioning of the brain and central nervous system. Odd teeth: A mother’s Internet sleuthing led to her daughter’s troubling diagnosis 2016-02-08T05:00:00Z A result of the body’s own immune system’s attacking myelin sheaths that coat nerve fibers, the disease typically strikes between the ages of 20 and 40, and affects women more commonly than men. Roche’s MS Drug Reports Promising Results 2015-10-08T04:00:00Z MS is a disease of the central nervous system in which an abnormal immune response attacks the myelin sheath, or fatty protective layer, around neurons. Melatonin Linked to Seasonal Relapses of Multiple Sclerosis 2015-09-23T04:00:00Z This layer—the “myelin sheath”—insulates the part of the neuron that transmits signals, just like flexible plastic protects telephone cables. Melatonin could help treat multiple sclerosis 2015-09-10T04:00:00Z The disorder is believed to be triggered by immune cells called T-cells that destroy the material known as the myelin sheath that surrounds and protects nerve cells. Seasonal Melatonin Levels May Affect MS Flare-Ups, Study Says 2015-09-10T04:00:00Z Every one of the nerve cells in the human brain is surrounded by an ultra-thin layer of fat and protein called the myelin sheath, she explained. Mediterranean Diet Plus Olive Oil or Nuts May Boost Thinking and Memory 2015-05-11T04:00:00Z Glial cells perform essential functions such as providing a myelin sheath around the neurons to enable fast transmission of nerve signals and helping to maintain the correct ion concentration. Neurobiology: Unrestrained excitement : Nature : Nature Publishing Group 2014-07-08T04:00:00Z Four weeks later, an increase in newly generated oligodendrocytes and increased myelin sheath thickness were found within the stimulated premotor circuit. [Research Article] Neuronal Activity Promotes Oligodendrogenesis and Adaptive Myelination in the Mammalian Brain 2014-05-01T18:26:14.316Z Oligodendrocytes generate multiple myelin sheaths, lipid-rich extensions of specialized plasma membrane that spirally coat condensed layers around neurons. [Perspective] A New Wrap for Neuronal Activity? 2014-05-01T18:25:58.611Z Most of the therapies developed so far target MS, which occurs when the immune system attacks the myelin sheath that protects neurons in the brain and spinal cord. Immunology: A tolerant approach 2014-03-26T18:20:25.689Z The myelin sheath protects the nerve structure and helps nerve cell interaction. Mediterranean Diet Plus Olive Oil or Nuts May Boost Thinking and Memory 2015-05-11T04:00:00Z Multiple sclerosis is a chronic disease in which the body's own immune system attacks the myelin sheaths that protect nerve fibers in the brain, spinal cord and optic nerves. FDA advisory panel supports approval of Sanofi MS drug Lemtrada 2013-11-13T22:06:07Z Oligodendrocytes produce the myelin sheath, the insulating material that surrounds nerve fibres called axons. Neuroscience: Map the other brain 2013-09-05T20:20:29.767Z As more and more of this coating, myelin sheath, is destroyed, the nerves become more and more damaged. Multiple sclerosis won’t stop Chris Wright from pursuing NBA dream 2013-07-04T17:32:41Z The disease hinders development of the myelin sheath, a fatty covering that protects the brain's nerve fibers. Former Bills QB Kelly battling cancer of the jaw 2013-06-03T13:05:09Z With MS, the protective layer around nerves, known as the myelin sheath, becomes damaged. Highest MS rate in Orkney Islands 2012-12-10T11:19:18Z It is caused by an overactive immune system that destroys the myelin sheath that protects nerves. Biogen says new look at data bolsters oral MS drug 2012-10-12T14:06:15Z In multiple sclerosis, the myelin sheaths around axons become damaged, and in HIV-associated neurological conditions, the virus infects astrocytes and microglia, not neurons. Neuroscience: Map the other brain 2013-09-05T20:20:29.767Z The drug, which requires monthly fusions that last approximately two hours, fends off those cells in the body mistakenly attacking the myelin sheath, thereby slowing degeneration of the nerves. Multiple sclerosis won’t stop Chris Wright from pursuing NBA dream 2013-07-04T17:32:41Z Electron microscopy also revealed significantly thinner myelin sheaths. The story of a lonely brain 2012-10-01T23:15:06.163Z NRG1 plays a role in fostering an oligodendrocyte's full development of long, complex branches that reach out to neurons and wrap neuronal axons in thick, protective myelin sheaths. Early Isolation Impairs Brain Connections 2012-09-13T22:17:00Z M.S. is an autoimmune disease that damages the myelin sheath surrounding the nerve cells. Multiple Sclerosis Drug Doesn’t Stop Disability, Study Finds 2012-07-18T00:14:32Z The fatty myelin sheath, light green, around the nerve is vital. Cholesterol 'helps' damaged brain 2012-06-17T17:24:50Z MS is a disease in which immune system cells destroy the myelin sheath that protects the nerve cells in the brain and spinal cord. Cannabis fails to slow progress of multiple sclerosis in UK study 2012-05-28T23:03:01Z This fatty white substance insulates axons with a myelin sheath, speeding up the transmission of electrical impulses by a factor of up to at least 50, compared to unmyelinated axons. The story of a lonely brain 2012-10-01T23:15:06.163Z In M.S., the body’s immune system damages neurons in the brain and spinal cord, attacking the myelin sheath that insulates these nerves. New Drugs Raise Hope for Patients With M.S. 2011-12-26T20:19:32Z For reasons still not quite understood, when the lymphocytes repopulate, those involved in attacking the myelin sheath seem less likely to recover. Antibody Offers Hope for Multiple Sclerosis Treatment 2011-10-24T18:45:03.460Z It occurs when the protective coating, known as the myelin sheath, around nerve fibres in the brain and spinal cord begins to break down, slowing the brain's communication with the rest of the body. Scientists unravel genetic clues to multiple sclerosis 2011-08-10T17:07:23Z When the researchers injected myelin-deficient regions in the mice with a drug that prevents destruction of the AXIN2 protein, the mice grew myelin sheaths faster than untreated mice, repairing the damage. Disocvery Suggests Drugs Can Prevent Brain Injuries Common in Premature Babies 2011-06-26T21:15:02.453Z With MS the protective layer around nerves, known as the myelin sheath, becomes damaged. 'Virus and sunlight' link to MS 2011-04-19T06:27:44Z The protective layer around nerves, known as the myelin sheath, becomes damaged. 'Virus and sunlight' link to MS 2011-04-19T01:38:10Z It is caused by damage to the myelin sheath, which protects and surrounds nerve cells. Goal: Rookie Endures Multiple Sclerosis 2011-03-29T01:20:38Z Multiple sclerosis causes the immune system to attack the myelin sheath, which protects nerve cells, leading to symptoms including numbness, difficulty in coordination, and memory loss. From Soup to MS Drug: One Fungus's Journey 2011-03-10T22:00:00Z Everyone agrees that MS destroys the fatty myelin sheath that enwraps many nerve fibers. The YouTube Cure: How Social Media Shapes Medical Practice 2011-02-08T14:15:00.237Z Likewise, genes involved in making the myelin sheaths that insulate nerve cells go wrong in both schizophrenic and bipolar patients. Psychiatric diagnosis: Thesis, antithesis, synthesis 2010-10-14T11:20:00Z You have these neural pathways that come from the motor cortex, and each one has something around them called the myelin sheath. Sean O' Hair. At Peace. 2010-03-22T00:00:00Z When the myelin sheath is damaged, nerve impulses are slowed down or stopped. Goal: Rookie Endures Multiple Sclerosis 2011-03-29T01:20:38Z Looking more closely, researchers examined the effects of removing the prion protein in both the nerve cells themselves, and the Schwann cells surrounding them, which are responsible for making the myelin sheath. 2010-01-25T00:02:00Z The more reps, the thicker the myelin sheath gets. Sean O' Hair. At Peace. 2010-03-22T00:00:00Z |
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