Folic Acid-Indication: Parkinson’s Disease (PD)

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Research: In this study, researchers measured blood levels of total homocysteine ((t)Hcy), vitamin B(12) and folic acid in patients with Parkinson s disease (PD) and in age-matched controls, and searched for possible associations between these levels with smoking, alcohol consumption, L-DOPA treatment and disease duration in PD patients.

Results: The investigators initially observed that plasma (t)Hcy levels were increased by around 30% in patients affected by PD compared to controls. The findings also indicated that the major determinant of the increased plasma concentrations of (t)Hcy in PD patients was folic acid deficiency, whereas in controls (t)Hcy levels were mainly determined by plasma vitamin B(12) concentrations. They also found that alcohol consumption, gender and L-DOPA treatment did not significantly alter plasma (t)Hcy, folic acid and vitamin B(12) levels in “parkinsonians.” Furthermore, disease duration was positively associated with (t)Hcy levels and smoking was linked with a deficit of folic acid in PD patients. Considering the potential synergistic deleterious effects of Hcy increase and folate deficiency on the central nervous system, these researchers believe folic acid should be supplemented in patients affected by PD in order to normalise blood Hcy and folate levels, therefore potentially avoiding these risk factors for neurologic deterioration in this disorder.

Dos Santos EF, et al.  Evidence that folic acid deficiency is a major determinant of hyperhomocysteinemia in Parkinson s disease. Metab Brain Dis 2009 Mar 18. View Abstract

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