The causality between gut microbiome and liver cirrhosis: a bi-directional two-sample Mendelian randomization analysis

Autor: Qing-Ao Xiao, Yun-Fei Yang, Lin Chen, Ying-Chun Xie, Hai-Tao Li, Zhi-Gang Fu, Qiang Han, Jia Qin, Jie Tian, Wen-Jiang Zhao, Fei Cai, Yin-Tao Hu, Lin-Feng Ai, Chao Li, Xu-Ying Chen, Decheng Wang, Yu-Yan Tan, Xuan Xia, Xiao-Lin Zhang
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Microbiology, Vol 14 (2023)
Druh dokumentu: article
ISSN: 1664-302X
DOI: 10.3389/fmicb.2023.1256874
Popis: Background and aimPrevious studies have reported an association between gut microbiota and cirrhosis. However, the causality between intestinal flora and liver cirrhosis still remains unclear. In this study, bi-directional Mendelian randomization (MR) analysis was used to ascertain the potential causal effect between gut microbes and cirrhosis.MethodsLarge-scale Genome Wide Association Study (GWAS) data of cirrhosis and gut microbes were obtained from FinnGen, Mibiogen consortium, and a GWAS meta-analysis of Alcoholic cirrhosis (ALC). Two-sample MR was performed to determine the causal relationship between gut microbiota and cirrhosis. Furthermore, a bi-directional MR analysis was employed to examine the direction of the causal relations.ResultIn MR analysis, we found that 21 gut microbiotas were potentially associated with cirrhosis. In reverse MR analysis, 11 gut microbiotas displayed potentially associations between genetic liability in the gut microbiome and cirrhosis. We found that the family Lachnospiraceae (OR: 1.59, 95% CI:1.10–2.29) might be harmful in cirrhotic conditions (ICD-10: K74). Furthermore, the genus Erysipelatoclostridium might be a protective factor for cirrhosis (OR:0.55, 95% CI:0.34–0.88) and PBC (OR:0.68, 95% CI:0.52–0.89). Combining the results from the MR analysis and reverse MR analysis, we firstly identified the Genus Butyricicoccus had a bi-directional causal effect on PBC (Forward: OR: 0.37, 95% CI:0.15–0.93; Reverse: OR: 1.03, 95% CI:1.00–1.05).ConclusionWe found a new potential causal effect between cirrhosis and intestinal flora and provided new insights into the role of gut microbiota in the pathological progression of liver cirrhosis.
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