AUTHOR=Zhang Jing , Hu Yingqiu , Wu Lidong , Zeng Qi , Hu Bin , Luo Zhiqiang , Wang Yibing 

TITLE=Causal effect of gut microbiota on Gastroduodenal ulcer: a two-sample Mendelian randomization study

JOURNAL=Frontiers in Cellular and Infection Microbiology

VOLUME=13

YEAR=2023

URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2023.1322537

DOI=10.3389/fcimb.2023.1322537

ISSN=2235-2988

ABSTRACT=<sec><title>Background</title><p>Gastroduodenal ulcers are associated with <italic>Helicobacter pylori</italic> infection and the use of nonsteroidal anti-inflammatory drugs (NSAIDs). However, the causal relationship between gastroduodenal ulcers and gut microbiota, especially specific gut microbiota, remains unclear.</p></sec><sec><title>Methods</title><p>We conducted an analysis of published data on the gut microbiota and Gastroduodenal ulcer using genome-wide association studies (GWAS). Two-sample Mendelian randomization (MR) analysis was performed to determine the causal relationship between gut microbiota and Gastroduodenal ulcer. Sensitivity, heterogeneity, and pleiotropy analyses were conducted to confirm the accuracy of the research findings.</p></sec><sec><title>Results</title><p>Our study showed that the abundance of <italic>Enterobacteriaceae</italic>, <italic>Butyricicoccus</italic>, <italic>Candidatus Soleaferrea</italic>, <italic>Lachnospiraceae NC2004 group</italic>, <italic>Peptococcus</italic>, and <italic>Enterobacteriales</italic> was negatively correlated with the risk of Gastroduodenal ulcer. Conversely, the abundance of <italic>Streptococcaceae</italic>, <italic>Lachnospiraceae UCG010</italic>, <italic>Marvinbryantia</italic>, <italic>Roseburia</italic>, <italic>Streptococcus</italic>, <italic>Mollicutes RF9</italic>, and <italic>NB1n</italic> was positively correlated with the risk of Gastroduodenal ulcer. MR analysis revealed causal relationships between 13 bacterial genera and Gastroduodenal ulcer.</p></sec><sec><title>Conclusion</title><p>This study represents a groundbreaking endeavor by furnishing preliminary evidence regarding the potentially advantageous or detrimental causal link between the gut microbiota and Gastroduodenal ulcer, employing Mendelian Randomization (MR) analysis for the first time. These discoveries have the potential to yield fresh perspectives on the prevention and therapeutic approaches concerning Gastroduodenal ulcer, with a specific focus on the modulation of the gut microbiota.</p></sec>