[ABSTRACT OF STUDY] "Effect of high-dose methylprednisolone treatment....in MS exacerbation: "Therapy of acute exacerbations of multiple sclerosis (MS) with high-dose intravenous methylprednisolone (IVMP) has shortened the recovery period after relapses, but the mechanisms responsible for the beneficial effects of IVMP in attacks have not been clearly established. Our purpose was to analyze the effect of IVMP .....A tendency to a reduction of CCR5-expressing CD4+ and CD8+ blood cells induced by IVMP suggests inhibition of their potential to transmigrate into the central nervous system, which is consistent with the short-term beneficial effect of IVMP in acute exacerbation of MS."