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Jefferson neuroscientists show anti-inflammation molecule helps fight MS-like disease
Date:11/11/2007

(PHILADELPHIA) An immune system messenger molecule that normally helps quiet inflammation could be an effective tool against multiple sclerosis (MS). Neurology researchers led by Abdolmohamad Rostami, M.D., Ph.D., professor and chair of the Department of Neurology at Jefferson Medical College of Thomas Jefferson University and the Jefferson Hospital for Neuroscience in Philadelphia, have found that the protein interkeukin-27 (IL-27) helped block the onset or reverse symptoms in animals with an MS-like disease.

The results suggest that IL-27 may someday be part of a therapy to temper over-active immune responses, which are thought to be at the heart of MS, an autoimmune disease (in which the body attacks its own tissue) affecting the central nervous system. The Jefferson neuroscientists report their findings November 11, 2007 in the journal Nature Immunology. The paper first appears in an advance online publication.

In MS, one of the most common neurological diseases affecting young adults, the myelin coating of nerve fibers becomes inflamed and scarred. As a result, messages cannot be sent through the nervous system. Dr. Rostamis team was trying to understand the mechanisms of how immune responses damage the myelin sheath and axons in the brain.

They had previously observed that IL-27, a signaling molecule called a cytokine, could suppress IL-17, another cytokine, and inflammation. They also knew that in other MS models, mice that lacked receptors for IL-27 developed excessive inflammation.

Dr. Rostami, who is also director of the Neuroimmunology Laboratory in the Department of Neurology at Jefferson Medical College, Denise Fitzgerald, Ph.D., a postdoctoral research fellow in Dr. Rostamis laboratory, and their colleagues used an animal model of MS called experimental autoimmune encephalomyelitis (EAE) for the investigation.

When the scientists gave IL-27 to the experimental mice, it significantly suppressed active disease. T
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Contact: Steve Benowitz
steven.benowitz@jefferson.edu
215-955-5291
Thomas Jefferson University
Source:Eurekalert

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