4.8 Article

Physical activity and risk of multiple sclerosis: A Mendelian randomization study

期刊

FRONTIERS IN IMMUNOLOGY
卷 13, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2022.872126

关键词

physical activity; multiple sclerosis; Mendelian randomization; genetic correlation; causation

资金

  1. National Key Research and Development Program of China
  2. Sichuan Science and Technology Program
  3. National Natural Science Foundation of China
  4. [2021YFC2501200]
  5. [2022ZDZX0023]
  6. [2021YJ0415]
  7. [81901294]
  8. [81871000]

向作者/读者索取更多资源

Multiple epidemiological studies have shown an association between physical activity and the risk of multiple sclerosis (MS), with moderate physical activity appearing to reduce the risk of MS.
Multiple evidence from epidemiological studies has suggested association between physical activity and risk of multiple sclerosis (MS). However, the conclusion was still controversial between studies, and whether the association was causal or confounded is elusive. To evaluate the role of physical activity with different intensities in the risk of MS, we first estimated their genetic correlation, and then conducted two-sample and multivariable Mendelian randomization analyses based on summary statistics from previous large genome-wide association studies. A significant genetic correlation was identified between moderate physical activity and the risk of MS (genetic correlation: -0.15, SE=0.05, P=2.9E-03). Meanwhile, higher moderate physical activity was significantly associated with a reduced risk of MS (OR:0.87, 95% CI:0.80-0.96, P=3.45E-03). Such association was further verified using summary statistics from another study on overall physical activity (OR:0.36, 95% CI:0.17-0.76, P=6.82E-03). The results were robust under all sensitivity analyses. Current results suggested moderate physical activity could reduce the risk of MS. These findings help better understand the role of physical activity in MS, and provide some lifestyle recommendations for individuals susceptible to MS.

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