Causal Relationship Between Gut Microbiota and Vascular Aging A Mendelian Randomization Study

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  • 1.Beijing Hospital of Traditional Chinese Medicine Capital Medical University Beijing 100010, China
    2.Beijing Shijitan Hospital Capital Medical University Beijing 100038, China

Received date: 2026-05-20

  Revised date: 2026-07-02

  Accepted date: 2026-08-13

  Online published: 2026-08-17

Abstract

Objective: To explore the potential causal relationship between gut microbiota and vascular aging VA using Mendelian randomization MR analysisto provide genetic causal evidence for the clinical treatment of vascular aging.Methods: Summary statistics from genome-wide association studies GWAS of gut microbiota in the MiBioGen consortium were used as exposure variables. Two-sample MR analysis was performed using public GWAS data to investigate the association between gut microbiota and vascular aging. Three analytical methods namely inverse variance weighting IVW), MR-Egger regression and weighted median estimator WME), were applied to assess causal relationships with odds ratios OR and 95% confidence intervals CI as effect indicators. Egger intercept test leave-one-out analysis and MR-PRESSO were used for pleiotropy testing sensitivity analysis and outlier detection to ensure the reliability of the results.Results: IVW analysis identified five genera as protective factors against vascular agingAnaerotruncus OR=0.965P=0.044 95%CI 0.931-0.999), Oscillibacter OR=0.969P=0.048 95%CI 0.939-1.000), Streptococcus OR=0.971P=0.046 95%CI 0.943-1.000), Ruminiclostridium 9 OR=0.956P=0.022 95%CI 0.920-0.994), and Ruminococcaceae UCG014 OR=0.923P=0.027 95%CI 0.931-0.996. Conversely three genera were identified as potential risk factorsFlavonifractor OR=1.057P=0.006 95%CI 1.016-1.100), Eubacterium xylanophilum group OR=1.044P=0.032 95%CI 1.004-1.087), and Ruminococcaceae UCG002 OR=1.036P=0.010 95%CI 1.009-1.064.Conclusion: A potential causal association exists between gut microbiota and vascular aging. This study provides robust genetic evidence supporting the "gut-vascular axis" theory and identifies specific microbial targets with potential intervention value.


Cite this article

111 111 111 .

Causal Relationship Between Gut Microbiota and Vascular Aging A Mendelian Randomization Study

[J]. CHINESE JOURNAL OF MEDICINAL GUIDE, 2026 , 28(6) : 667 -667-673 . DOI: 10.1009-0959.2026.080003

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