PMID- 15327028 OWN - NLM STAT- MEDLINE DCOM- 20050208 LR - 20170214 IS - 1352-4585 (Print) IS - 1352-4585 (Linking) VI - 10 IP - 4 DP - 2004 Aug TI - Human herpesvirus 6 infects the central nervous system of multiple sclerosis patients in the early stages of the disease. PG - 348-54 AB - The presence and the replicative state of human herpesvirus 6 (HHV-6) were evaluated in clinical samples from multiple sclerosis (MS) patients at the first time of MS diagnosis. HHV-6 variant B was present in peripheral blood mononuclear cells of 5/32 (15%) patients, but persisted with a latent infection. Viral sequences were present also in cerebrospinal fluid (CSF), both free in the liquid (7/32, 22%) and latent in the cellular fraction (3/32, 9%), as shown by analysis of viral transcription. In these cases, variant A was detected. HHV-6 DNA sequences present in the CSF were associated to mature viral particles. In fact, in vitro infectious assays of CSF showed the presence of replication-competent virions. These results show that about 20% of MS patients have active foci of HHV-6 variant A infection in the early stages of the disease and suggest that viral replication takes place within the central nervous system. FAU - Rotola, A AU - Rotola A AD - Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy. FAU - Merlotti, I AU - Merlotti I FAU - Caniatti, L AU - Caniatti L FAU - Caselli, E AU - Caselli E FAU - Granieri, E AU - Granieri E FAU - Tola, M R AU - Tola MR FAU - Di Luca, D AU - Di Luca D FAU - Cassai, E AU - Cassai E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Mult Scler JT - Multiple sclerosis (Houndmills, Basingstoke, England) JID - 9509185 RN - 0 (DNA, Viral) SB - IM MH - Central Nervous System Diseases/blood/cerebrospinal fluid/*complications MH - Cerebrospinal Fluid/virology MH - DNA, Viral/cerebrospinal fluid MH - Enzyme-Linked Immunosorbent Assay MH - *Herpesvirus 6, Human/genetics/physiology MH - Humans MH - Multiple Sclerosis/blood/cerebrospinal fluid/*complications MH - Polymerase Chain Reaction MH - Prevalence MH - Reverse Transcriptase Polymerase Chain Reaction MH - Roseolovirus Infections/*complications/epidemiology MH - Virion/physiology MH - Virus Latency MH - Virus Replication EDAT- 2004/08/26 05:00 MHDA- 2005/02/09 09:00 CRDT- 2004/08/26 05:00 PHST- 2004/08/26 05:00 [pubmed] PHST- 2005/02/09 09:00 [medline] PHST- 2004/08/26 05:00 [entrez] AID - 10.1191/1352458504ms1045oa [doi] PST - ppublish SO - Mult Scler. 2004 Aug;10(4):348-54. doi: 10.1191/1352458504ms1045oa.