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Multiple Sclerosis: Advances in Research and Treatment

Identifying and Treating Disparate Causes of MS continued...

''Clinically, we treat everyone the same," Weiner says. ''We need to think more broadly." MS, he says, maybe caused by multiple factors -- low vitamin D in one person, something else in another person, and understanding the various causes could lead to targeted treatments. 

Perhaps the most controversial idea about the potential cause of MS is one proposed by Paolo Zamboni, MD, of the University of Ferrara. He suggests that an abnormality in blood drainage may contribute to the nervous system damage of MS. The condition, called chronic cerebrospinal venous insufficiency or CCSVI, may cause changes in blood flow patterns within the brain, in turn causing brain tissue injury and neuron degeneration, he proposes.  

The ''fix" is inserting a tiny balloon or stent in the vessel to improve blood flow. The technique continues to be studied by researchers, including scientists at Stanford University and the University of Buffalo.  

But many MS experts are skeptical. ''I can't see how anyone can claim this is what is causing MS," Calabresi tells WebMD. In the ongoing Buffalo research, more than half of MS patients were found to have the condition. But so did more than 20% of the healthy patients, Calabresi says.

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Reviewed on May 10, 2010

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