Intra‐blood‐brain barrier measles virus antibody synthesis in multiple sclerosis patients

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Abstract
Antibodies to nine viruses were measured in serum and CSF of MS patients, patients with other neurologic diseases (OND), and healthy controls. The extent of antibody production inside the blood-brain barrier (BBB) was determined by making a new correction for BBB permeability. Compared with OND and healthy controls, MS patients as a group had significantly higher corrected CSF:serum antibody ratios to measles virus but not to the other eight viruses studied. The incidence of significantly high CSF:serum ratios for measles antibody in MS patients was 50%, and in the other two control groups it was 0 to 12%. The incidence of corrected antibody ratios to the other eight viruses was not significantly different among the three groups.