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Updated: Jun 13, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
Published on: October 15, 2019
Gut microbiota's causative relationship with peripheral artery disease: a Mendelian randomization study
Yu Tian1,2, Guanqun Yao2, Loren Skudder-Hill2
1Vascular Surgery Department, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China.
Certain gut bacteria influence peripheral artery disease (PAD) risk. Some microbes protect against PAD, while others increase the risk, suggesting new therapeutic targets for this condition.
Area of Science:
- Microbiome research
- Cardiovascular disease epidemiology
- Genetic epidemiology
Background:
- The link between gut microbiota and peripheral artery disease (PAD) is not well understood.
- Traditional PAD risk factors are known, but the role of gut bacteria requires further investigation.
Purpose of the Study:
- To investigate the potential causative association between gut microbiota and peripheral artery disease (PAD).
- To utilize Mendelian Randomization (MR) to explore this relationship.
Main Methods:
- Employed data from the International MiBioGen Consortium and FinnGen.
- Analyzed 211 bacterial taxa using 2079 SNPs as instrumental variables.
- Applied inverse-variance weighted (IVW) and other MR methods in R (v4.3.1) with the TwosampleMR package.
Main Results:
- Identified protective associations for Coprococcus2, RuminococcaceaeUCG004, and RuminococcaceaeUCG010 against PAD.
- Found risk associations for FamilyXI, Lachnoclostridium, and LachnospiraceaeUCG001 with PAD.
Conclusions:
- Findings suggest a causal role for specific gut bacteria in PAD development.
- These results open new pathways for PAD etiology research and treatment development.
- Further validation in diverse populations and deeper taxonomic analysis are recommended.
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