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Hopes for reversing age-associated effects in MS patients
Date:1/6/2012

New research highlights the possibility of reversing ageing in the central nervous system for multiple sclerosis (MS) patients. The study is published today, 06 January, in the journal Cell Stem Cell.

As we get older, our bodies' ability to regenerate decreases. This is not only true for our skin (which is evident in the wrinkles that develop as we age) but also true for other tissues in the body, including the regenerative processes in the brain. For diseases which often span several decades and are affected by regenerative processes, such as multiple sclerosis, this can have massive implications.

In multiple sclerosis, the insulating layers that protect nerve fibres in the brain, known as myelin sheaths, become damaged. The loss of myelin in the brain prevents nerve fibres from sending signals properly and will eventually lead to the loss of the nerve fibre itself. However, early in the disease, a regenerative process, or remyelination, occurs and the myelin sheaths are restored. Unfortunately, as people with MS age, remyelination decreases significantly, resulting in more nerve fibres being permanently lost.

However, a new study in mice shows that the age-associated decline in the regeneration of the nerve's myelin sheath, or remyelination, is reversible. The proof of principle study demonstrates that when old mice are exposed to the inflammatory cells (called monocytes) from young mice, the ageing remyelination process can be reversed.

Professor Robin Franklin, Director of the MS Society's Cambridge Centre for Myelin Repair at the University of Cambridge, said: "What we have shown in our study, carried out in collaboration with Dr Amy Wagers and colleagues at Harvard University, is that the age-associated decline in remyelination is reversible. We found that remyelination in old adult mice can be made to work as efficiently as it does in young adult mice.

"For individuals with MS, this means
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Contact: Genevieve Maul
gm349@admin.cam.ac.uk
01-223-332-300
University of Cambridge
Source:Eurekalert

Page: 1 2

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