Abstract

We designed a large multicentric study to analyse the presence of MSR V particles in blood and CS F of a large cohort of patients and controls from different European areas. 149 MS patients and 153 neurological and healthy controls were selected from Sardinia, Spain, Northern-Italy and Sweden. To avoid biological and inter-assay variability MSR V was detected within a single laboratory through nested and real-time PCR assays specific for pol and env genes. MSR V detection in blood and CS F of MS patients and controls in populations of different ethnicity gave significant differences (p<0.05 compared to neurological controls and p<0.001 compared to healthy controls). The presence and viral load of MSRV are significantly associated with MS as compared to neurological and healthy controls in all ethnic groups.

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