Hopes of a New Treatment Approach for ParalysisMarch 15, 2004Scientists at the Deutsches Krebsforschungszentrum (German Cancer Research Center, Heidelberg) were recently able to show in experiments with mice that a paralysis can be reversed by blocking programmed cell death. Paralysis in the form of paraplegia and quadriplegia is usually the result of traumatic spinal cord injuries, but can also be caused by tumors. When the spinal cord is cut off, information sent by the brain can no longer be transmitted to the limbs. Biological processes such as programmed cell death, or apoptosis, take place after the actual moment of injury of the nerve cords and lead to further destruction of the damaged tissue and thus to permanent paralysis. Dr. Ana Martin-Villalba and collaborators at the Immunogenetics Division headed by Professor Dr. Peter Krammer describe in the latest issue of the science journal Na-ture Medicine* how blockage of a key molecule of apoptosis restores the ability of coordinated movement of paralyzed limbs. Using specific antibodies, the investiga-tors blocked a protein called CD95 L which triggers a suicide cascade in cells carry-ing the specific receptor protein CD95. The experiments showed that mice treated with antibodies after selective spinal cord injuries performed significantly better in special skill tests than the control animals. In addition, tissue sections of the treated animals revealed newly growing nerve fibers beyond the place of injury. Treatment with antibodies also prevented oligodendro-cytes from dying - cells that insulate the cord-like nerve fibers and thus facilitate sig-nal transmission. Brain injuries and spinal cord injuries are the leading causes of deaths and severe disabilities in individuals under 40 years of age. In the future, specific blockage of apoptosis may become a way of preventing life-long paralysis by protecting injured nerves from further destruction. *Deana Demjen, Stefan Klussmann et al.: Neutralization of CD95 ligand promotes regeneration and functional recovery after spinal cord injury. Nature Medicine, April 2004 Deutsches Krebsforschungszentrum |
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| Related Spinal Cord Current Events and Spinal Cord News Articles 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. Cancer metabolism discovery uncovers new role of IDH1 gene mutation in brain cancer Agios Pharmaceuticals today announced that its scientists have established, for the first time, that the mutated IDH1 gene has a novel enzyme activity consistent with a cancer-causing gene, or oncogene. 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. Scripps research scientists find new link between insulin and core body temperature A team led by scientists at The Scripps Research Institute have discovered a direct link between insulin-a hormone long associated with metabolism and metabolic disorders such as diabetes-and core body temperature. UCI embryonic stem cell therapy restores walking ability in rats with neck injuries The first human embryonic stem cell treatment approved by the FDA for human testing has been shown to restore limb function in rats with neck spinal cord injuries - a finding that could expand the clinical trial to include people with cervical damage. Findings show nanomedicine promising for treating spinal cord injuries Researchers at Purdue University have discovered a new approach for repairing damaged nerve fibers in spinal cord injuries using nano-spheres that could be injected into the blood shortly after an accident. Researchers explore new ways to prevent spinal cord damage using a vitamin B3 precursor Substances naturally produced by the human body may one day help prevent paralysis following a spinal cord injury, according to researchers at Weill Cornell Medical College. A recent $2.5 million grant from the New York State Spinal Cord Injury Research Board will fund their research investigating this possibility. Researchers identify drug candidate for treating spinal muscular atrophy A chemical cousin of the common antibiotic tetracycline might be useful in treating spinal muscular atrophy (SMA), a currently incurable disease that is the leading genetic cause of death in infants. Master regulator found for regenerating nerve fibers in live animals Researchers at Children's Hospital Boston report that an enzyme known as Mst3b, previously identified in their lab, is essential for regenerating damaged axons (nerve fibers) in a live animal model, in both the peripheral and central nervous systems. Researchers find ways to encourage spinal cord regeneration after injury Animal research is suggesting new ways to aid recovery after spinal cord injury. New studies demonstrate that diet affects recovery rate and show how to make stem cell therapies safer for spinal injury patients. More Spinal Cord Current Events and Spinal Cord News Articles |
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