AI Article Synopsis
- Researchers studied the role of interleukin-17 (IL-17) in periodontitis, a gum disease, to determine if it causes the condition or just correlates with it.
- They used 12 genetic variants as tools to measure IL-17 levels in a large group from previous studies and analyzed its impact on periodontitis cases.
- The results showed that higher genetically proxied IL-17 levels were associated with a lower likelihood of developing periodontitis, indicating that IL-17 may actually have a protective effect against the disease.
Article Abstract
Background: Circulating levels of interleukin-17 (IL-17) are associated with the presence and severity of periodontitis. However, whether IL-17 is causal for disease development is unknown. We investigated the effect of genetically proxied IL-17 on periodontitis using instrumental variable analysis.
Methods: We identified 12 genetic variants from genome-wide association study (GWAS) of 7760 European descent individuals, used these variants as instrumental variables for IL-17, and linked them to a GWAS of 17,353 clinical periodontitis cases and 28,210 European controls. Generalized weighted least squares analysis accounted for linkage disequilibrium of variants.
Results: We found an inverse association of genetically proxied IL-17 and periodontitis (odds ratio, 0.84; 95% confidence interval: 0.75-0.94; p = 0.003), which was corroborated after sensitivity analysis for horizontal pleiotropy.
Conclusion: The findings suggest that IL-17 protects against initial periodontitis.
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| http://dx.doi.org/10.1002/JPER.22-0365 | DOI Listing |
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