ArticleJournal of cardiothoracic surgery2025
Causal relationship between mitochondrial proteins and risks of aortic aneurysms and aortic dissection: a Mendelian randomization study.
Article in Journal of cardiothoracic surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundMitochondrial dysfunction may be linked to the development of aortic aneurysm (AA) and aortic dissection (AD). This study aimed to evaluate the potential associations between proteins related to mitochondrial function and the risks of AA/AD using Mendelian randomization (MR).
methodsLarge-scale publicly available genome-wide association studies (GWAS) and FinnGen summary data were utilized for MR analysis. The causal relationship between mitochondrial proteins and AA/AD was assessed using inverse-variance weighted (IVW) as the primary method. Sensitivity analyses were conducted to detect heterogeneity and pleiotropy by Cochran's Q test, MR-Egger test, MR-PRESSO global test, and "leave-one-out" analysis.
resultsThere were potential causal relationships between several mitochondrial proteins and AA/AD. Specifically, the iron-sulfur cluster assembly enzyme ISCU (OR = 1.165, 95% CI: 1.051-1.291, P = 0.004) and NFU1 iron-sulfur cluster scaffold homolog (OR = 1.184, 95% CI: 1.056-1.329, P = 0.004) were identified as potential risk factors for AA; whereas the 39 S ribosomal protein L14 (OR = 0.868, 95% CI: 0.764-0.987, P = 0.031) was found to be a protective factor for AA. Furthermore, 39 S ribosomal protein L33 (OR = 1.134, 95% CI: 1.010-1.274, P = 0.033) and cytochrome C oxidase subunit 5B (OR = 1.330, 95% CI: 1.037-1.706, P = 0.025) were associated with increased risks of AD; whereas the 39 S ribosomal protein L52 (OR = 0.736, 95% CI: 0.550-0.984, P = 0.038) and mitochondrial ubiquitin ligase activator of NFKB 1 (OR = 0.806, 95% CI: 0.656-0.989, P = 0.039) were identified as potential protective factors for AD. Sensitivity analysis confirmed the stability of the results.
conclusionsThis study identified potential genetic associations between mitochondrial proteins and AA/AD. Targeting these mitochondrial proteins may help prevent the occurrence of AA/AD.
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