PMID- 15327029 OWN - NLM STAT- MEDLINE DCOM- 20050208 LR - 20170214 IS - 1352-4585 (Print) IS - 1352-4585 (Linking) VI - 10 IP - 4 DP - 2004 Aug TI - Distribution and quantification of human herpesvirus 6 in multiple sclerosis and control brains. PG - 355-9 AB - Multiple sclerosis (MS) is thought to be precipitated by environmental factors, potentially including viruses, in genetically susceptible individuals and recently human herpesvirus 6 (HHV-6) has been associated with the disease. We have analysed post mortem brain for the presence, variant type and quantity of HHV-6 by PCR. A total of 124 samples from seven anatomically defined regions of brain were tested from MS cases and controls. HHV-6 DNA was detected in 41% and 44% of MS case and control samples. The median viral loads were 11 and 9 genome copies/microg DNA in cases and controls respectively and the viral load was not increased in lesions. Except in one instance, the HHV-6 DNA detected was variant B. There was no apparent difference in the distribution of HHV-6 DNA in the brains of MS cases versus controls, nor between normal appearing and lesional tissue in MS cases. Periventricular regions of the brain were more frequently positive for HHV-6 DNA in both MS cases and controls, although this difference was not statistically significant. These studies confirm the neurotropism of HHV-6 but do not demonstrate differences in the distribution, variant type or quantity of HHV-6 in brains from patients with MS versus controls. FAU - Tuke, P W AU - Tuke PW AD - Centre for Virology, Department of Infection, Royal Free and University College Medical School of UCL, Hampstead Site, Rowland Hill Street, London NW3 2PF, UK. FAU - Hawke, S AU - Hawke S FAU - Griffiths, P D AU - Griffiths PD FAU - Clark, D A AU - Clark DA 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 - Aged MH - Aged, 80 and over MH - Brain/metabolism/pathology/*virology MH - Case-Control Studies MH - DNA, Viral/metabolism MH - Female MH - Gene Dosage MH - Herpesvirus 6, Human/genetics/*isolation & purification MH - Humans MH - Male MH - Middle Aged MH - Multiple Sclerosis/metabolism/pathology/*virology MH - Polymerase Chain Reaction MH - Tissue Distribution MH - Viral Load 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 - 10.1191/1352458504ms1057oa [doi] PST - ppublish SO - Mult Scler. 2004 Aug;10(4):355-9. doi: 10.1191/1352458504ms1057oa.