myelin

Regular Exercise ‘Strongly Recommended’ to Ease Fatigue in MS This may seem like a no-brainer. But once upon a time, neurologists told people with MS to avoid exercise. They told us it would overheat us or make us tired. Over the past few years, this advice has flipped 180…

Researchers developed a way of reprograming cells to use synthetic materials — provided by the team — to create artificial, working structures within or about the cells. This approach may be a way to reprogram nerve cells to produce myelin-like protective polymers — large molecules made of many repeating…

Continuous production of fatty molecules (lipids) is crucial to the maintenance of the myelin sheath that wraps nerve fibers to protect them, ensuring the transmission of electrical impulses between nerve cells, a study reported. These findings may have strong implications for treating disorders caused by myelin loss, including…

Emerald Health Pharmaceuticals’ investigational cannabidiol-derived EHP-101 continues to show potential to ease inflammation and myelin loss (demyelination) — a hallmark of multiple sclerosis (MS) — according to data from healthy volunteers and a mouse model of MS. The data support the advance of EHP-101’s clinical development into…

A protein called dedicator of cytokinesis 8 (DOCK8) is key for the development and expansion of self-reactive immune T-cells that wrongly attack myelin, a study in a mouse model of multiple sclerosis (MS) found. DOCK8 drives the migration and stimulating capacity of dendritic cells — immune cells that ‘teach’…

Transplanting human glial progenitor cells (GPCs) — brain cells able to generate myelin-producing cells — effectively led to remyelination in the brains of adult mice with myelin disorders, a study found. These results were presented at the Americas Committee for Treatment and Research in Multiple Sclerosis (ACTRIMS) Forum 2020, running…

Immune system cells can either trigger or suppress inflammation by controlling mitochondrial respiration — the process that occurs in mitochondria, the cells’ powerhouses, and results in the production of usable energy by cells — according to a recent study. This discovery raises the possibility that…

Anavex Life Sciences‘ investigational therapy Anavex 2-73 (blarcamesine) showed an ability to protect, repair, and induce the formation of oligodendrocytes — the cells that produce the protective myelin layer around neurons — in early cell testing, researchers reported. These findings, which further establish the therapy’s potential as a treatment…

Myeliviz is the name of a new compound approved for a clinical trial in the U.S. that has the potential to make the process of diagnosing multiple sclerosis faster and tracking the disease progression easier. It does this by providing doctors with a better picture of damaged myelin —…

Pheno Therapeutics, a spin-off from the University of Edinburgh, in Scotland, will search for new molecules capable of inducing the body to repair or replace the myelin sheath that is damaged in multiple sclerosis (MS). In MS, the body’s own immune system mistakes…

Clene Nanomedicine‘s remyelination therapy candidate, CNM-Au8, showed a “robust” ability to stimulate the production of new myelin and increase the number of myelin-wrapped nerve fibers in the brain and spinal cord of animals in models of demyelinating disease, allowing mice to recover motor skills, a study reports.

Dietary Changes May Delay Development and Progression of MS, Study Finds Methionine is an amino acid found in meat, eggs, and dairy. It’s absorbed by T-cells that are part of our immune system. Those cells are also believed to be the immune cells that attack our myelin, creating the…

Myelin is the protective sheath that covers nerve fibers and is damaged in those with multiple sclerosis. Quantifying the degenerative process of myelin would lend perspective to how much and where a patient is progressing. Currently, MRIs are used for diagnostic purposes, but the nuances of progression remain difficult…

Epstein-Barr Virus and Certain Genes Interact in Ways That Can Promote MS, Study Finds Much has been written over the years about a possible connection between the Epstein-Barr virus and multiple sclerosis. Here’s further evidence of a link that has to do with how particular genes interact with the…

Scientists discovered new interaction between immune cells from the central nervous system (CNS) — consisting of the brain and spinal cord — and immune cells from the blood that may lead to new treatments for multiple sclerosis (MS) and other neurological diseases.

The U.S. Food and Drug Administration (FDA) has agreed to allow Myeliviz, an imaging agent of myelin — the protective layer that covers nerve fibers and is damaged in multiple sclerosis (MS) — to be evaluated in a clinical trial with healthy volunteers. Myeliviz, created by Case Western Reserve University researchers, has the potential…

Nerve impulses travel in a “dual cable” with myelin, playing additional roles to what was previously thought, new research has found. This discovery advances human knowledge of how brain connections work, and may help scientists understand more accurately what happens when myelin is lost — which is what occurs…

Editor’s note: “Need to Know” is a series inspired by common forum questions and comments from readers. Have a comment or question about MS? Visit our forum. This week’s question is inspired by the post “Researcher Receives $130K Grant to Study Sleep and MS” from Aug. 27,…

Almost Half of MS Patients Change or Stop DMT Due to High Financial Burden, Survey Shows I frequently see reports of this on multiple sclerosis patient websites. People with MS say they’ve been forced to change or even stop their treatment because it costs too much. Some people have…

Multiple sclerosis (MS) is an autoimmune disease in which the immune system mistakenly attacks the protective coating that surrounds nerve fibers and helps them function. Damage to this protective coating, called myelin, means the nerve fibers are fragile and easily damaged. MS in children, or pediatric MS, is…

Blocking a protein called PAR1 may enhance the regeneration of myelin, the protective fatty layer that covers nerve fibers and is damaged in multiple sclerosis (MS), a mouse study shows. Therapeutic targeting of PAR1 may promote remyelination and delay MS progression, according to the study, “Blocking the Thrombin Receptor…

The first participant has been dosed in the Phase 2 REPAIR-MS clinical trial examining the effects of CNM-Au8, Clene Nanomedicine‘s investigational remyelinating therapy, on brain metabolism in people with multiple sclerosis (MS), the company announced. In MS, the immune system attacks myelin, the protective sheath that surrounds…

Measuring the speed of signals sent to the brain by nerves in the eye could help assess if remyelination is taking place, a study in cats suggests. Such measurements could be useful in evaluating multiple sclerosis (MS) treatments aiming to repair myelin in clinical trials — of particular interest…

MetP Pharma‘s patent application for a new method to treat demyelinating and neuroinflammatory diseases, including multiple sclerosis (MS), has been approved by the United States Patent and Trademark Office (USPTO). The patent, titled “Treatment of Demyelinating Diseases” (U.S. Appl. No. 16/506,830), is valid until 2039,…

Two potassium ion channels located at gaps between segments of myelin are required for high frequency and high-speed conduction of electrical impulses along myelin-rich nerves, a study shows. Loss of the workings of these potassium channels in what are called the nodes of Ranvier slowed nerve conduction, and impaired the sensory response of a rat. These findings suggest that similar problems with these channels may exist in people with multiple sclerosis (MS). The study “TREK-1 and TRAAK Are Principal K+ Channels at the Nodes of Ranvier for Rapid Action Potential Conduction on Mammalian Myelinated Afferent Nerves” was published in the journal Neuron. Myelin, the fat-rich substance that wraps around nerve fibers (axons), works to insulate and increase the velocity of the signals relayed by nerve cells. Gaps between segments of myelin, or nodes of Ranvier, also work to amplify these signals. Nerve impulses must travel and arrive at relay points extremely quickly for effective connection and communication between brain regions. Researchers at the University of Alabama at Birmingham (UAB) showed for the first time that the nodes of Ranvier have potassium channels that allow the myelinated nerves to propagate nerve impulses at very high frequencies, and with high conduction speeds. This is key for fast transmission of sensations and rapid muscle control in mammals. The nodes of Ranvier were first discovered in 1878 by the French scientist Louis-Antoine Ranvier. Later research, dating from 1939, showed that they work as relay stations placed along myelinated nerves — about 1 millimeter apart — for proper conduction of nerve impulses at rates of 50 to 200 meters per second. Between these nodes, the nerve is wrapped in myelin. When the nerve fires, the electrical impulse travels along the nerve (called action potential) from one node to the other at a speed 100 times faster than that of impulses in nerves lacking myelin. Neuroscientists know that ions crossing the membrane of nerve cells are required to fire electrical impulses along nerves, but whether potassium ion channels were present in the nodes of Ranvier remained a matter of debate. No one had been able to use patch clamps — a technique that allows recording of whole-cell or single-ion channel currents flowing across membranes — to the nodes of the small intact nerves in mammals. UAB researchers led by Jianguo Gu, PhD, worked with a rat and identified two ion channels, called TREK-1 and TRAAK, as the main potassium channels in the nodes of Ranvier of the rat’s myelinated nerve. Most importantly, they showed these ion channels allow high-speed and high frequency conduction of nerve impulses along the myelinated afferent nerves — those carrying information from the sensory organs (like the eyes or skin) to the central nervous system (the brain and spinal cord). TREK-1 and TRAAK channels were highly enriched — 3,000 times higher — at the nodes of Ranvier in afferent nerves than in the nerve cell’s body. When the scientists removed (knocked down) these channels, conduction speed in the rat's nerve dropped by 50 percent, and the rat's "aversion reaction" to its whisker being flicked was slower. "TREK-1 and TRAAK are clustered at nodes of Ranvier of myelinated afferent nerves," the researchers concluded, and "suppressing these channels retards nerve conduction and impairs sensory functions." Increasing evidence shows that dysfunction in the nodes of Ranvier are present in neurological diseases, including MS. Whether autoantibodies (antibodies that attack the body’s own tissues) target the TREK-1 and TRAAK to affect nerve conduction, leading to sensory and motor problems such as those seen in MS, remains to be investigated, Gu said in a UAB news release written by Jeff Hansen.

The National Multiple Sclerosis Society awarded more than $339,000 to Clene Nanomedicine to support clinical tests into its lead candidate CNM-Au8 in treating multiple sclerosis (MS) by protecting nerve cells and restoring myelin. The grant was awarded under the National MS Society’s Fast Forward program, which aims…

Metformin, a common diabetes treatment that works to mimic dietary fasting, was seen to promote remyelination in the stem cells of elderly rats, suggesting it may be useful in treating multiple sclerosis. “Metformin Restores CNS Remyelination Capacity by Rejuvenating Aged Stem Cells” was published in…

Blocking production of the low-density lipoprotein receptor-related protein 1 (LRP1) — involved in inflammatory and immune responses — specifically in myelin repair cells halts neuroinflammation and promotes myelin repair, a preclinical study shows. These results, from two mouse models of multiple sclerosis (MS), shed light on the underlying mechanisms…

A protein known as nuclear factor I-A (NFIA) is key for spinal cord repair and timely remyelination by astrocytes — the most abundant cells in the brain and first responders to sites of injury, findings in a mouse model of multiple sclerosis (MS) suggest. In brain lesions, NFIA is…

A diagnosis of multiple sclerosis (MS) often leaves patients and their families with many unanswered questions. It can be hard to find information, connect with other patients, and find support. Here are some frequently asked questions and answers about MS: What is MS? MS is an autoimmune disease —…