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Multiple Sclerosis Channel
Reported January 3, 2013

Stopping Vision Loss in MS Patients?

 

(Ivanhoe Newswire) – Deimination is a protein modification that is altered in patients with multiple sclerosis (MS) and Pelizaeus-Merzbacher disease (PMD). Demyelinating diseases, such as MS, are frequently associated with the progressive loss of vision. The retinal nerve damage is thought to be caused by immune system-mediated inflammation; however, other demyelinating disorders, such as PMD, do not involve the immune system, suggesting that there are other causes of retinal nerve damage. 
 
Dr. Sanjoy Bhattacharya, Ph.D, of the University of Miami, and his colleagues conducted research in which they investigated the role of deimination in retinal nerve damage in a mouse model of demyelinating disease (ND4 mice). They discovered that deimination was reduced in patients with demyelinating diseases and in ND4 mice that exhibited vision loss. Decreases in deamination could be detected in the mice prior to the onset of other symptoms.
 
Bhattacharya and colleagues found that they could improve visual function in ND4 mice by restoring deimination. These results demonstrate that loss of deimination underlies nerve damage in demyelinating diseases and may be a suitable target for therapeutic intervention.
 
SOURCE: Journal of Clinical Investigation, January 2013
 
 
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