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Abstract Title:

Is the deficiency of vitamin B12 related to oxidative stress and neurotoxicity in Parkinson's patients?

Abstract Source:

CNS Neurol Disord Drug Targets. 2008 Feb;7(1):20-7. PMID: 18289028

Abstract Author(s):

G Ali Qureshi, Aftab A Qureshi, Bika Ram Devrajani, M A Chippa, S Ali Syed

Abstract:

This review deals with the results showing the relation between vitamin B(12) deficiency and neurotoxicity of homocysteine and nitrite (a metabolite of nitric oxide) in Parkinson's patients treated with levodopa (L-Dopa). We have already reported a linear relationship between the CSF levels of nitrite with glutamic acid and homocysteine suggesting that the production of nitrite is interrelated with the neurotoxic level of homocysteine. The levels of nitrite and homocysteine resulting in the deficiency of vitamin B(12) are some of the factors promoting degeneration in Parkinson's disease. This review emphasizes the importance of these parameters in designing suitable drug therapy for Parkinson disease. Additionally, there is evidence that increased homocysteine levels might accelerate dopaminergic cell death in Parkinson disease (PD), through neurotoxic effects. Furthermore, levodopa (L-Dopa) treatment of PD results in hyperhomocysteinemia as a consequence of L-Dopa methylation by catechol-O-methyltransferase (COMT). Therefore, higher dietary intakes of folate, vitamin B12, and vitamin B6 might decrease the risk of PD through decreasing plasma homocysteine.

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Sayer Ji
Founder of GreenMedInfo.com

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Easy Turmeric recipes + The Dark Side of Wheat

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