Can Oral Vitamin B12 and Folate Supplementation Preserve Cognitive Function of Patients With Early Dementia?
Background: Vitamin B12 and folate are essential to brain health. Sub optimal status of vitamin B12 and folate leads to elevation of plasma homocysteine concentration, which is associated with Dementia. Vitamin B12 and folate supplementation improved the cognitive function of demented subjects with hyperhomocysteinaemia in a pilot study.
Objective: To determine the effectiveness of vitamin B12 and folate supplementation in preserving cognitive function of subjects with early dementia
After stratified randomization by mini mental state examination scores, supplement group subjects take 1 mg of methylcobalamin and 5 mg of folic acid daily, while placebo group subjects take placebo capsules. The primary outcome is Mattis dementia rating scale. The secondary outcomes are mini mental state examination, neuropsychiatric inventory, and Cornell scale for depression in dementia. These measurements will be performed at baseline and every six months for 24 months. Fasting plasma homocysteine concentrations are measured at baseline and 18-month follow-up.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
Vitamin B12, folate
The Chinese University of Hong Kong
Chinese University of Hong Kong
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00164970
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
A lipid cofactor that is required for normal blood clotting. Several forms of vitamin K have been identified: VITAMIN K 1 (phytomenadione) derived from plants, VITAMIN K 2 (menaquinone) from bacteria, and synthetic naphthoquinone provitamins, VITAMIN K 3 (menadione). Vitamin K 3 provitamins, after being alkylated in vivo, exhibit the antifibrinolytic activity of vitamin K. Green leafy vegetables, liver, cheese, butter, and egg yolk are good sources of vitamin K.
Folate Receptor 2
A subtype of GPI-anchored folate receptors that is expressed in PLACENTA and hematopoietic cells.
Folate Receptor 1
A subtype of GPI-anchored folate receptors that is expressed in tissues of epithelial origin. This protein is also identified as an ovarian-tumor-specific antigen.
2'-Deoxyuridine. An antimetabolite that is converted to deoxyuridine triphosphate during DNA synthesis. Laboratory suppression of deoxyuridine is used to diagnose megaloblastic anemias due to vitamin B12 and folate deficiencies.
A disease due to deficiency of NIACIN, a B-complex vitamin, or its precursor TRYPTOPHAN. It is characterized by scaly DERMATITIS which is often associated with DIARRHEA and DEMENTIA (the three D's).
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