To investigate the causal relationship between 211 intestinal microorganisms and anxiety by Mendelian randomization analysis.
Based on the genome-wide association study data of MiBioGen Alliance and Finnish database, the qualified instrumental variables were extracted, and the inverse variance weighting method was used as the main Mendelian randomized analysis method, combined with MR-Egger and Weighted median methods. Finally, the results were verified by Cochran’s Q statistics, intercept terms of MR-Egger regression, MR-PRESSO, and leave-one-out methods.
Cyanobacteria (OR=1.103, 95%CI: 1.001-1.215, P=0.048), Shigella (OR=1.159, 95%CI: 1.027-1.309, P=0.017), and Slackia (OR=1.170, 95%CI: 1.047-1.307, P=0.017) were positively correlated with the risk of anxiety. Firmicutes (OR=0.857, 95%CI:0.754-0.974, P=0.018), Clostridium (OR=0.817, 95%CI: 0.701-0.951, P=0.009), Clostridium (OR=0.849, 95%CI: 0.736-0.980, P=0.025), Eubacterium_rectale_group (OR=0.861, 95%CI: 0.748-0.993, P=0.039), Ruminococcaceae_UCG004(OR=0.886, 95%CI: 0.789-0.994, P=0.039), and Ruminococcaceae_UCG011(OR=0.919, 95%CI: 0.854-0.989, P=0.025) were negatively correlated with anxiety risk. The results were verified and no heterogeneity and horizontal pleiotropy were found.
This study evaluates the potential causal relationship between intestinal microorganisms and anxiety, providing reference for the diagnosis, prevention and treatment of anxiety in the future.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |