To study the causal relationship between rheumatoid arthritis (RA) and atherosclerosis (AS) by two-sample Mendelian randomized analysis.
The whole genomes of RA and different subtypes of AS were obtained from IEU Open GWAS (https://gwas.mrcieu.ac.uk/) database. Two-sample Mendelian randomized analysis was carried out using the inverse-variance weighted (IVW) method, MR-Egger regression, simple mode, weighted mode, and weighted median (WM),and the results were verified by multiple sensitivity analyses.
In total 86 single nucleotide polymorphisms (SNPs) strongly associated with RA were included as instrumental variables in this study. According to IVW, RA was associated with coronary atherosclerosis (OR=1.034, 95%CI: 1.010-1.058) and peripheral atherosclerosis (OR=1.083, 95%CI: 1.041-1.127, P=0.001). Heterogeneity test, horizontal multiple effect analysis, sensitivity analysis, and MR-PRESSO further clarified the causal relationship by Mendelian randomization analysis.
RA has positive causal correlations with coronary atherosclerosis and peripheral atherosclerosis, but there is no causal correlation between AS and RA by reverse MR analysis. RA increases the risk of coronary atherosclerosis and peripheral arteriosclerosis. It is suggested to actively control RA to reduce the risk of AS.
| 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 |