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Low vitamin D & EBV immune activity may be key to MS breakthrough within 2–3 years



Abstract:
Objective: Vitamin D deficiency and Epstein-Barr virus (EBV) infection may be associated with the development of multiple sclerosis (MS).

We investigated serum 25-hydroxyvitamin D (25-OH-D) levels and anti-EBV immunoreactivity in 25 individuals before the first clinical manifestation of MS.

Patients and methods:

• 56 serum samples of 25 individuals who had donated blood prior to the first clinical MS manifestation (clinically isolated syndrome (CIS))

• Four male subjects, 21 female subjects,

• Mean age 31.5 years at time of pre-CIS blood sampling;

• Mean age at disease onset 33.4 years…

….were available, covering an interval of 7.3 years-2 months (mean 31.5 months) before CIS.

In 18 of 25 patients serum samples were also obtained after established diagnosis of MS.

Longitudinal age- and gender-matched healthy blood donors (four male subjects, 21 female subjects, 39 samples, mean age 32.5 years) served as controls.

Serum 25-OH-D was measured by isotope dilution-liquid chromatography-tandem mass spectrometry. 25-OH-D levels were deconvoluted using published seasonal coefficients from a German population.

Immunoglobulin G (IgG) against Epstein-Barr virus nuclear antigen-1 (EBNA1) were assessed using commercially available ELISA.... Read More - http://www.msrc.co.uk/index.cfm/fuseact ... pageid/707

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