Journal of Molecular Neuroscience

, Volume 27, Issue 1, pp 23–27

Association of MTHFR gene polymorphism C677T with susceptibility to late-onset alzheimer’s disease

  • Binbin Wang
  • Feng Jin
  • Rui Kan
  • Shun Ji
  • Chuanfang Zhang
  • Zeping Lu
  • Chenguang Zheng
  • Ze Yang
  • Li Wang
Original Article

DOI: 10.1385/JMN:27:1:023

Cite this article as:
Wang, B., Jin, F., Kan, R. et al. J Mol Neurosci (2005) 27: 23. doi:10.1385/JMN:27:1:023

Abstract

Increased total plasma homocysteine (t-Hcy) levels are found to be associated with Alzheimer’s disease (AD). Because the methylenetetrahydrofolate reductase (MTHFR) gene encodes a key enzyme that influences the metabolism of homocysteine, it has been considered as a possible genetic risk factor for AD. Although the MTHFR gene C677T polymorphism has a significant impact on reducing enzyme activity and increasing t-Hcy concentrations, the association between the C677T polymorphism and AD remains inconclusive. To determine whether the MTHFR gene C677T polymorphism contributes to the risk for late-onset AD (LOAD) in Chinese, we have investigated 104 sporadic LOAD patients and 130 healthy controls. The strong associations of the TT genotype and T-allele with LOAD (p=0.001, OR=5.73 95% CI 1.85–17.72, and p=0.002, OR=1.89 95% CI 1.25–2.86) were found. After stratifying by apolipoprotein E allele 4 (APOE ɛ4) status, increased LOAD risks associated with the TT genotype only in the APOE ɛ4 noncarriers (χ2=8.92, df=1, p=0.003) and with the T-allele in either group (χ2=5.18, df=1, p=0.023 and χ2=5.53, df=1, p=0.019) were seen. These results suggest that as an APOE ɛ4 allele-dependent risk factor, the MTHFR gene C677T polymorphism is involved in developing LOAD in Chinese.

Index Entries

Late-onset Alzheimer’s disease methylenetetrahydrofolate reductase (MTHFR) homocysteine apolipoprotein E polymorphism Chinese 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Humana Press Inc 2005

Authors and Affiliations

  • Binbin Wang
    • 1
    • 2
  • Feng Jin
    • 1
  • Rui Kan
    • 1
    • 2
    • 5
  • Shun Ji
    • 1
    • 2
  • Chuanfang Zhang
    • 1
    • 2
  • Zeping Lu
    • 4
  • Chenguang Zheng
    • 4
  • Ze Yang
    • 3
  • Li Wang
    • 1
  1. 1.Center for Human and Animal Genetics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
  2. 2.Graduate School of ChineseAcademy of SciencesBeijingChina
  3. 3.Laboratory for Medical Genetics, Institute of GeriatricsBeijing Hospital, Ministry of HealthBeijingChina
  4. 4.Jiangbin HospitalNanningChina
  5. 5.Faculty of Life ScienceInner Mongolia UniversityHuhhotChina

Personalised recommendations