ArticleBrazilian journal of otorhinolaryngology
Causal relationship between genetically predicted Enzyme and Tinnitus risk: a two-sample bi-directional mendelian randomization study.
Article in Brazilian journal of otorhinolaryngology. 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
objectivesObservational studies have reported an association between enzymes and tinnitus. However, the exact nature and strength of the causal relationship between enzymes and tinnitus remain unclear.
methodsIn this study, we utilized two-sample bi-directional mendelian randomization using publicly available GWAS summary statistics to investigate the causal relationship between enzymes and the risk of tinnitus. Causal relationship was estimated using the inverse variance weighted method. In additional, the validity of the causal relationship was assessed by conducting sensitivity tests.
resultsAfter accounting for heterogeneity and horizontal pleiotropy, we found suggestive evidence supporting the causality of nine enzymes on tinnitus including 3-hydroxy-3-methylglutaryl-coenzyme A reductase, Alanine-tRNA ligase cytoplasmic, Fatty-acid amide hydrolase 2, E3 ubiquitin-protein ligase DTX1, E3 ubiquitin-protein ligase ZNRF3, Glutathione S-transferase A3, Liver enzyme levels (alanine transaminase), Platelet-activating factor acetylhydrolase IB subunit beta, Probable inactive ribonuclease-like protein 13. Furthermore, evidence of causal effects of tinnitus on six types of enzymes including Serine protease 27 levels, Phospholipase D3 measurement, Inactive peptidyl-prolyl cis-trans isomerase FKBP6, Probable E3 ubiquitin-protein ligase MID2, Ubiquitin-like modifier-activating enzyme ATG7, Aldo-keto reductase family 1 member C1 was also detected.
conclusionsThe present study suggests a causative effect of specific types of enzymes on tinnitus, as well as a reverse causality between them. These will provide potential targets for the treatment of tinnitus and enrich strategies to alleviate tinnitus-related comorbidities. LEVEL OF EVIDENCE: I.
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