Abstract
Human herpesvirus type 6 (HHV-6) is a new representative of the herpesvirus family which was associated with a spectrum of diseases, including myalgic encephalitis, meningitis and the chronic fatigue syndrome. We set out to study the potential role of HHV-6 in multiple sclerosis (MS) ( n = 21), facial palsy (FP) ( n = 19) and Guillain-Barré-syndrome (GBS) ( n = 7). Results were compared with a control group (CG) ( n = 16). We analyzed paired samples of serum and cerebrospinal fluid (CSF) with the polymerase chain reaction (PCR) for the presence of HHV-6 DNA. The studies were complemented by ELISA determination of serum antibodies against HHV-6. In the MS group we detected HHV-6 DNA in the CSF from three of 21 (14.3%) patients but not in the corresponding serum samples. In FP, GBS and controls CSF and serum PCRs were negative in all cases. HHV-6 serum antibody titers were significantly higher in MS compared with FP, GBS and controls. These findings suggest that HHV-6 may play a role in MS.
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