Abstract
Background: The relationship between prevalence of multiple sclerosis (MS) and latitude may be due to both genetic and environmental factors. The hypothesis that, in Ireland, MS prevalence is increasing and that north–south differences relate to variation in serum 25-hydroxyvitamin D (25(OH)D) levels was tested in this study.
Patients and methods: Patients and matched control subjects were identified in counties Donegal, Wexford and South Dublin through multiple sources. Prevalence was determined. Blood samples were taken for serum 25(OH)D and serum intact parathyroid hormone measurement, and DNA was extracted.... Read More - http://www.msrc.co.uk/index.cfm/fuseact ... ageid/1334