Introduction: Previous observational studies have associated periodontitis (PD) with migraine; however, the results are inconclusive and the causality of the association between PD and migraine remains unclear. This two-sample Mendelian randomization (MR) study was performed to explore the bi-directional causal relationship between PD and migraine.
Methods: To investigate the relationship between PD (17,353 cases; 28,210 controls) and migraine (1072 cases; 360,122 controls), we used genetic tools from the largest available genome-wide association study of European descent. Inverse variance-weighted (IVW) and a series of sensitivity analyses were used to explore the association between migraine and PD. We performed an MR study using seven SNPs (single nucleotide polymorphisms) as instrumental variables for PD to investigate the causal relationship between migraine and PD.
Results: We found no significant causal relationship between PD and migraine (odds ratio, OR = 1.000; 95% confidence interval, CI = 0.99-1.00; p = 0.65). Similarly, no evidence supported a causal relationship between migraine and PD (OR = 0.07; CI = 2.04 × 10-2.65 × 10; p = 0.77). A sensitivity analysis revealed that no potential polymorphic effect (p = 0.356) and heterogeneity (p = 0.652) exists for the variants used in constructing the genetic instrument.
Conclusions: Based on the results of our MR study, there is no causal relationship between PD and migraines or migraines and PD.
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http://dx.doi.org/10.1007/s40120-023-00484-7 | DOI Listing |
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School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo 180-8602, Japan.
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Halberg Chronobiology Center, University of Minnesota, Minneapolis, MN 55455, USA.
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(FD) is a major grapevine disease in Europe, despite the quarantine status of its causal agent [FD phytoplasma (FDp)] and the mandatory monitoring and vector control practices. As alarming FD epidemic outbreaks continue to appear in Tuscany (Central Italy), a 4-year survey was carried out in the main wine-growing areas of the region, where FD presence was investigated in both primary and secondary FDp hosts and vectors, i.e.
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