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BY-NC-ND 3.0 license Open Access Published by De Gruyter August 10, 2013

Long-term Supplementation with Β Vitamins does not Change Plasma Neopterin Concentrations in Demented Patients

Katharina Schroecksnadel , Birgit Gruber , Barbara Frick , Marcel Jenny , Maximilian Ledochowski , Friedrich Leblhuber and Dietmar Fuchs EMAIL logo
From the journal Pteridines

Abstract

Inflammation and immune system activation seem to play an important role in the development and progression of dementia. Also concentrations of immune activation marker neopterin are increased in serum and cerebrospinal fluid of some patients with dementia, and a significant relationship is found between concentrations of neopterin and homocysteine. Β vitamin supplementation is able to rapidly slow-down homocysteine formation in patients. However, no change of neopterin was found within one month of such therapy. In this study, scrum concentrations of neopterin and homocysteine were investigated in 58 patients with Alzheimer's disease (n=30), vascular dementia (n=12) and mild cognitive impairment (n=16) during 1 -3 months of supplementation with Β vitamins (Beneitran compositum®)with monthly increasing dose ( 1 - 6 tablets a day). No change of neopterin concentrations was observed In the patients groups throughout the whole study period (all ρ >0.05). As was reported earlier, a rapid decline of homocysteine concentrations was achieved already within the first month of supplementation (p <0.01 ), however, no further change of homocysteine was observed later on despite accelerated dose of vitamin supplements. Β vitamin supplementation did not influence neopterin concentrations, and also the longer period of supplementation had no effect. The question remains, if solely the lowering of homocysteine concentrations by folate supplementation could have any beneficial effect to modulate the course of dementia when the immunopathogenetic mechanisms are not influenced.

Published Online: 2013-08-10
Published in Print: 2006-11

© 2013 by Walter de Gruyter GmbH & Co.

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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