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Multiple sclerosis attacks are associated with picornavirus infectionsDepartment of Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132 USA, john.kriesel{at}hsc.utah.edu
Department of Neurology, University of Utah School of Medicine, Salt Lake City, UT 84132 USA
Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA
Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132 USA
Department of Neurology, University of Utah School of Medicine, Salt Lake City, UT 84132 USA Multiple sclerosis (MS) is a chronic demyelinating disease of the central nervous system, which often follows a relapsing-remitting (RR) course with discrete attacks. MS attacks have been associated with upper respiratory infections (URIs), but the specific viruses responsible have not been identified. We studied a cohort of 16 RRMS patients experiencing URI and followed them for clinically identifiable attacks. The viral causes of 21 separate URIs were investigated using culture and polymerase chain reactio n (PCR) of nasal swab specimens, and by serology. Sibleys at-risk period for MS attacks, beginning two weeks before and continuing for five weeks after a URI, was used for the analysis. Seven of the nine (78%) URIs due to picornaviruses were associated with an MS attack during the at-risk period. By contrast, only two of 12 (17%) picornavirus-negative URIs were associated with an MS attack (P =0.01). The possible role of picornaviruses in the patho genesis of MS deserves further study.
Key Words: attacks common cold exacerbations multiple sclerosis picornaviruses rhinoviruses upper respiratory infection
Multiple Sclerosis, Vol. 10, No. 2,
145-148 (2004) This article has been cited by other articles:
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