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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2023, Vol. 17 ›› Issue (04): 292-298. doi: 10.3877/cma.j.issn.1674-1366.2023.04.010

• Original Article • Previous Articles     Next Articles

The causal association between osteoporosis and periodontitis: A two-sample Mendelian randomization study

Yueqi Chen, Rui Luo, Han Xiang, Yongyan Yu, Ting Yu()   

  1. Affiliated Stomatology Hospital of Guangzhou Medical University·Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou 510182, China
  • Received:2022-11-18 Online:2023-08-01 Published:2023-08-14
  • Contact: Ting Yu
  • Supported by:
    Guangdong Basic and Applied Basic Research Foundation(2022A1515010497, 2023A1515030037); Basic Research Program of Guangzhou Science and Technology Bureau(2023A03J0324); Fundings of School of Stomatology, Guangzhou Medical University for Improving Innovation Capability of Undergraduates(Guangkouyixue [2022]3); Undergraduate Teaching Quality and Teaching Reform Engineering Projects of Guangzhou Medical University(2021-28-2, 2021-159-48, 2022-124-1)

Abstract:

Objective

To explore the causal relationship between osteoporosis and periodontitis with Mendelian randomization (MR) analysis.

Methods

Mutually independent SNPs associated with osteoporosis (exposure) were screened out from two Genome-wide association study (GWAS) databases (GEFOS, European, n = 142 487; BBJ, East Asian, n = 212 453). The SNP data on periodontitis (outcome) were obtained from another two GWAS databases and relevant SNPs corresponding to the exposure were selected as instrumental variables. Two-sample MR analysis was conducted with methods of inverse variance weighted (IVW), MR-Egger regression and weighted median. The causal association between osteoporosis and periodontitis was estimated with odds ratios.

Results

Totally 207 and 7 SNPs were screened out from European and East Asian populations, respectively. IVW did not support a causal relationship between osteoporosis and periodontitis (European: odds ratio = 0.964, P = 0.281; East Asian: odds ratio = 0.892, P = 0.090). The intercept of MR-Egger regression was unequal to zero, suggesting there was no genetic pleiotropy (intercept = 0.000 3, P = 0.909). Specific SNP was not found with leave-one-out analysis.

Conclusion

MR study does not support a causal association between osteoporosis and periodontitis in European and East Asian populations.

Key words: Periodontitis, Bone mineral density, Osteoporosis, Mendelian randomization study

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