• 1. Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China;
  • 2. Department of Public Health Service, Futian Center for Maternity and Child Care, Shenzhen 518045, China;
  • 3. Department of Emergency, Nanchang 334 Hospital, Nanchang 330001, China;
HUANGPeng, Email: huangpengncu@163.com
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Objective To systematically review the relationship between Cadmium (Cd) level and Alzheimer's disease (AD). Method We searched PubMed, EMbase, CNKI, WanFang Data and CBM databases from inception to December 2014 to collect case-control studies about the relationship between Cd level and AD. Two reviewers screened literature, extracted data and evaluated the risk of bias of included studies, and then meta-analysis was performed by using RevMan 5.3 software. Results A total of 11 studies were included, among them 8 studies were included into final meta-analysis. Three studies including 154 patients and 141 controls reported the relationship of serum Cd concentrations and AD, and the result of meta-analysis showed that the higher serum Cd level was found in the AD group than the control group (SMD=0.36, 95%CI 0.12 to 0.59, P=0.003). Six studies including 358 patients and 423 controls reported the relationship of blood Cd concentrations and AD, and the result of meta-analysis showed that there was no significant difference of blood Cd levels between both groups (SMD=0.35, 95%CI -0.14 to 0.84, P=0.16). Conclusion Serum Cd concentrations may be associated with AD, but blood Cd concentrations not. Due to the limitation of quality and quantity of the included studies, more high quality studies are needed to verify the above conclusion.

Citation: LIHui, MAOShao-ju, SUNWei-xuan, LIAOZhi-lin, TANGHan-mei, FUYan-yan, HUANGPeng. Correlation between Cadmium and Alzheimer's Disease:A Meta-analysis. Chinese Journal of Evidence-Based Medicine, 2015, 15(9): 1030-1034. doi: 10.7507/1672-2531.20150172 Copy

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