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A systematic review and meta-analysis of the associations of vitamin D receptor genetic variants with two types of most common neurodegenerative disorders

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Abstract

Background

Whether vitamin D receptor (VDR) genetic variants influence individual susceptibility to neurodegenerative disorders remains controversial.

Aims

This meta-analysis was conducted to analyze correlations of VDR genetic variants with two types of most common neurodegenerative disorders, Parkinson’s disease (PD) and Alzheimer’s disease (AD).

Methods

Systematic literature research of PubMed and Embase was performed to identify eligible articles. Q test and I2 statistic were employed to decide whether pooled analyses would be performed with random-effect models (REMs) or fixed-effect models (FEMs). All statistical analyses were conducted with Review Manager.

Results

Totally sixteen studies were enrolled for analyses. Among these eligible studies, ten studies were about PD (2356 cases and 2815 controls) and six studies were about AD (1256 cases and 1205 controls). Pooled overall analyses suggested that VDR rs7975232 (additive model: p = 0.03, OR = 1.19, 95% CI 1.01–1.39) and rs2228570 (recessive model: p < 0.008, OR = 1.26, 95% CI 1.06–1.50; allele model: p < 0.001, OR = 0.80, 95% CI 0.71–0.91) variants were significantly correlated with PD, and VDR rs731236 (dominant model: p = 0.003, OR = 0.70, 95% CI 0.56–0.89; additive model: p = 0.02, OR = 1.32, 95% CI 1.06–1.66; allele model: p = 0.02, OR = 0.82, 95% CI 0.69–0.96) variant was significantly correlated with AD. Further subgroup analyses by ethnicity revealed that the positive results were mainly driven by the Asians, whereas no significant associations were observed in Caucasians.

Conclusion

Our meta-analysis suggested that VDR rs7975232 and rs2228570 variants might serve as genetic biomarkers of PD, whereas VDR rs731236 variant might serve as a genetic biomarker of AD.

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Authors and Affiliations

  1. Department of Neurology, Baoji Municipal Center Hospital, Baoji, 721008, China

    Jiao Geng & Jianjun Zhang

  2. Department of Spinal Surgery, Baoji Municipal Center Hospital, Baoji, 721008, China

    Fudong Yao & Xiajun Liu

  3. Department of Spinal Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, 710054, China

    Jijun Liu & Yuanchi Huang

Authors
  1. Jiao Geng
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  2. Jianjun Zhang
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  3. Fudong Yao
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  4. Xiajun Liu
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  5. Jijun Liu
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  6. Yuanchi Huang
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Contributions

JG, JL and YH conceived of the study, participated in its design. JG and JZ conducted the systematic literature review. FY and XL performed data analyses. JG, JL and YH drafted the manuscript. All gave final approval and agree to be accountable for all aspects of work ensuring integrity and accuracy.

Corresponding authors

Correspondence to Jijun Liu or Yuanchi Huang.

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Geng, J., Zhang, J., Yao, F. et al. A systematic review and meta-analysis of the associations of vitamin D receptor genetic variants with two types of most common neurodegenerative disorders. Aging Clin Exp Res 32, 21–27 (2020). https://doi.org/10.1007/s40520-019-01135-4

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  • DOI: https://doi.org/10.1007/s40520-019-01135-4

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