• 1. Department of Hepatobiliary Surgery, General Hospital of Northern Theater Command, Shenyang 110000, P. R. China;
  • 2. Training Base for Graduate, General Hospital of Northern Theater Command, Dalian Medical University, Shenyang 110000, P. R. China;
ZHANG Wei, Email: zhang_wei_1980@163.com
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Objective To investigate the causal relationship between gut microbiota and cholelithiasis using a two-sample Mendelian randomization method. Methods The genome-wide association studies (GWAS) data of gut microbiota from the MiBioGen study and the GWAS data of cholelithiasis from the FinnGen Biobank were utilized. Genetic variants significantly associated with the relative abundance of gut microbiota were identified as instrumental variables (IVs) based on a specified threshold. The inverse variance weighted (IVW) method was employed as the primary analytical approach, with results assessed based on the odds ratio (OR) and 95% confidence interval (CI). The robustness and reliability of the findings were ensured through quality control measures, including sensitivity analysis, assessment of heterogeneity, and evaluation for horizontal gene pleiotropy. Results Clostridiumsensustricto1 [OR=1.160, 95%CI (1.023, 1.314), P=0.020], Coprococcus3 [OR=1.136, 95%CI (1.014, 1.272), P=0.028] and Peptococcus [OR=1.074, 95%CI (1.023, 1.128) , P=0.004] increased the risk of cholelithiasis. Bacilli [OR=0.897, 95%CI (0.818, 0.984), P=0.022], Family Ⅹ ⅢAD3011group [OR=0.908, 95%CI (0.830, 0.992), P=0.033] and Lactobacillales [OR=0.884, 95%CI (0.802, 0.974), P=0.013] were protective factors for cholelithiasis. Conclusion The study has identified 6 kinds of specific gut microbiota that are causally linked to the development of cholelithiasis, providing new ideas for the diagnosis and treatment of cholelithiasis.

Citation: ZHAO Hao, NAN Boyuan, ZHANG Wei. Two-sample Mendelian randomization analysis of the causal relationship between gut microbiota and cholelithiasis. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2025, 32(8): 972-977. doi: 10.7507/1007-9424.202410097 Copy

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