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Issue title: Folate and Homocysteine in Alzheimer's Disease
Article type: Research Article
Authors: McCaddon, Andrew
Affiliations: Wales College of Medicine, Gardden Road Surgery, Rhosllanerchrugog, Wrexham, Wales, LL142EN, UK. Tel.: +44 (0) 1978 842177; Fax: +44 (0) 1978 845782; E-mail: [email protected] | Center for Cellular Neurobiology and Neurodegeneration Research, University of Massachusetts Lowell, Lowell, MA 01854, USA
Abstract: The discovery of a relationship between homocysteine and cognition stems from clinical observations of an association between vitamin B12 and folate deficiency and cognitive dysfunction. This retrospective details the history of vitamin B12 and folic acid and the conceptual evolution of their association with dementia. The hematological and neuropsychiatric manifestations of these deficiencies are discussed, together with the nature of their relationship with dementia, generalized cognitive decline and discrete neuropsychological function. An evaluation of the potential of reversing ‘homocysteine-associated’ and/or ‘vitamin-associated’ cognitive decline raises questions as to whether current interventions can unequivocally determine if homocysteine independently impacts on cognitive function. Alternative approaches specifically designed to address this issue are discussed.
Keywords: Homocysteine, cognition, vitamin B12, folic acid
DOI: 10.3233/JAD-2006-9402
Journal: Journal of Alzheimer's Disease, vol. 9, no. 4, pp. 361-380, 2006
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