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Arzneimittelforschung. 2006;56(6):399-404.

Clinical activity of folinic acid in patients with chronic fatigue syndrome.

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1
Parker Hughes Institute and Parker Hughes Clinics, St. Paul, MN 55113, USA.

Abstract

A high incidence of severe B-cell immunodeficiency and chronic reactivated Epstein-Barr virus (EBV) infection in patients with chronic fatigue syndrome (CFS) is reported herein. Of the 58 patients evaluated, 100% had evidence of prior EBV exposure and 72% had evidence for reactivated EBV infection. Notably, 94% of CFS patients had B-cell immunodeficiency with a marked depletion of their CD19+IgM+ mature B-lymphocyte population. A remarkable 81% of CFS patients experienced subjective improvement of their symptoms after treatment with folinic acid (CAS 58-05-9, leucovorin). The findings provide unprecedented evidence that CFS frequently is a folinic acid responsive clinical entity accompanied by B-cell immunodeficiency and inappropriate antibody responses to EBV.

PMID:
16889122
DOI:
10.1055/s-0031-1296741
[Indexed for MEDLINE]
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