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First blinded study of venous insufficiency prevalence in MS shows promising results
Date:2/10/2010

BUFFALO, N.Y. -- More than 55 percent of multiple sclerosis patients participating in the initial phase of the first randomized clinical study to determine if persons with MS exhibit narrowing of the extracranial veins, causing restriction of normal outflow of blood from the brain, were found to have the abnormality.

The results were reported today by neurology researchers at the University at Buffalo.

When the 10.2 percent of subjects in which results were border line were excluded, the percentage of affected MS patients rose to 62.5 percent, preliminary results show, compared to 25.9 percent of healthy controls.

These preliminary results are based on the first 500 participants in the Combined Transcranial and Extracranial Venous Doppler Evaluation (CTEVD) study, which began at UB in April 2009. Investigators are planning to examine 500 additional subjects, who will be assessed in the second phase of the study with more advanced diagnostic tools. Complete data on the first 500 will be presented at the American Academy of Neurology meeting in April.

Robert Zivadinov, MD, PhD, UB associate professor of neurology and principal investigator on the study, says he is "cautiously optimistic and excited" about the preliminary data. Zivadinov directs the Buffalo Neuroimaging Analysis Center (BNAC), located in Kaleida Health's Buffalo General Hospital, where the study is being conducted.

"The data encourage us to continue on the same course," he says. "They show that narrowing of the extracranial veins, at the very least, is an important association in multiple sclerosis. We will know more when the MRI and other data collected in the CTEVD study are available." The analyses are being conducted by an independent statistician.

The investigation is the first step in determining if a condition called chronic cerebrospinal venous insufficiency (CCSVI) is a major risk factor for MS. CCSVI is a complex vascular condition discovered and describe
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Contact: Lois Baker
ljbaker@buffalo.edu
716-645-4606
University at Buffalo
Source:Eurekalert

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