Response to immune protein determines pathology of multiple sclerosisOctober 14, 2008New research may help reveal why different parts of the brain can come under attack in patients with multiple sclerosis (MS). According to a new study in mice with an MS-like disease, the brain's response to a protein produced by invading T cells dictates whether it's the spinal cord or cerebellum that comes under fire. The study-from researchers at the University of Maryland School of Medicine in Baltimore and Washington University in St. Louis-will be published online on October 13th in the Journal of Experimental Medicine. In most MS patients, the disease primarily affects the spinal cord and the white matter of the brain. But a small percentage of patients develop an atypical form of the disease, which primarily affects the cerebellum-the part of the brain that controls sensory perception and movement. For these patients, the disease tends to progress more rapidly and the prognosis is particularly bleak. MS ensues when the body's T cells invade the brain and trigger nerve-damaging inflammation, in part by secreting proteins called cytokines. According to the new study, lead by Washington University scientist John Russell, the brain's response to one particular immune protein, called interferon-g (IFNg), determines which part of the brain the T cells attack. In mice that are oblivious to IFNg (because they lack its receptor), mice suffer cerebellum and brain stem inflammation, but their spinal cords are spared. When IFNg receptors were left intact, the reverse occurred. Exactly how the brain's response to IFNg directs the T cell attack is not yet known, but the authors suspect that IFNg triggers a localized production of T cell-attracting proteins in the spinal cord. Translating the details of the "conversation" between T cells and brain cells, suggests Russell, might bring scientists closer to understanding the variable manifestations of human MS. Rockefeller University Press |
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| Related Multiple Sclerosis Current Events and Multiple Sclerosis News Articles Multiple health concerns surface as winter, vitamin D deficiences arrive A string of recent discoveries about the multiple health benefits of vitamin D has renewed interest in this multi-purpose nutrient, increased awareness of the huge numbers of people who are deficient in it, spurred research and even led to an appreciation of it as "nature's antibiotic." Factors from common human bacteria may trigger multiple sclerosis Current research suggests that a common oral bacterium may exacerbate autoimmune disease. The related report by Nichols et al, "Unique Lipids from a Common Human Bacterium Represent a New Class of TLR2 Ligands Capable of Enhancing Autoimmunity," appears in the December 2009 issue of The American Journal of Pathology. Drug studied as possible treatment for spinal injuries Researchers have shown how an experimental drug might restore the function of nerves damaged in spinal cord injuries by preventing short circuits caused when tiny "potassium channels" in the fibers are exposed. CSHL team solves structure of NMDA receptor unit that could be drug target for neurological diseases A team of scientists at Cold Spring Harbor Laboratory (CSHL) reports on Thursday their success in solving the molecular structure of a key portion of a cellular receptor implicated in Alzheimer's, Parkinson's, and other serious illnesses. Men leave: Separation and divorce far more common when the wife is the patient A woman is six times more likely to be separated or divorced soon after a diagnosis of cancer or multiple sclerosis than if a man in the relationship is the patient, according to a study that examined the role gender played in so-called "partner abandonment." The study also found that the longer the marriage the more likely it would remain intact. Neurologists Investigate Possible New Underlying Cause of MS Neurologists at the University at Buffalo are beginning a research study that could overturn the prevailing wisdom on the cause of multiple sclerosis (MS). Scientists demonstrate link between genetic defect and brain changes in schizophrenia Researchers at the University of North Carolina at Chapel Hill School of Medicine have found that the 22q11 gene deletion - a mutation that confers the highest known genetic risk for schizophrenia - is associated with changes in the development of the brain that ultimately affect how its circuit elements are assembled. Gentle touch may aid multiple sclerosis patients While gripping, lifting or manipulating an object such as drinking from a cup or placing a book on a shelf is usually easy for most, it can be challenging for those with neurological diseases such as multiple sclerosis or Parkinson's, or for people who had a stroke. For them, the tight gripping can cause fatigue, making everyday tasks difficult. Urate in blood and spinal fluid may predict slower decline in patients with Parkinson's disease Higher concentration of urate (an antioxidant) in the blood and spinal fluid of patients with early Parkinson's disease is associated with slower rates of clinical decline. Oxidized form of a common vitamin may bring relief for ulcerative colitis New research published in the Journal of Leukocyte Biology finds retinoic acid may alleviate ulcerative colitis and similar irritable bowel diseases. More Multiple Sclerosis Current Events and Multiple Sclerosis News Articles |
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