• Sharma, Sumit
• Mansoori, Nasim
• Alam, Rizwan
• Tripathi, Manjari
• Luthra, Kalpana
• Kalaivani, Mani
• Lakshmy, Ramakrishnan
• Mukhopadhyay, Asok K.

Abstract

<jats:p> Low level of vitamin B<jats:sub>12</jats:sub> and folic acid has been reported to play an important role in the pathogenesis of Alzheimer’s disease (AD) and vascular dementia (VaD). Serum folic acid and vitamin B<jats:sub>12</jats:sub> were assayed in 80 AD and 50 VaD cases and in 120 healthy controls. The reduced folate carrier ( RFC1) gene, rs1051266, which encodes the RFC 1, protein was analyzed for polymorphism by polymerase chain reaction–restriction fragment length polymorphism. It was observed that the patients having folic acid &lt;8.45 ng/mL had 2.4 (95% confidence interval [CI]: 1.4-4.5) times higher odds of having AD and 2.1 (95% CI: 1.1-4.2) times higher odds of having VaD than patients having folic acid ≥8.45 ng/mL. Serum vitamin B<jats:sub>12</jats:sub> level did not show any such statistically significant effect in altering the odds. No direct association was found between variant (G) allele or genotype of rs1051266 with AD and VaD cases. On serum folate level no association was observed with gene polymorphism. </jats:p>

Topics

• chemical ionisation