ArticleOphthalmology science
Grip Strength and Age-Related Ocular Diseases: Insights from Observational, Mendelian Randomization, and Mediation Analyses.
Article in Ophthalmology science. 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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8 authors.
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Abstract
Objective: We aimed to examine the cross sectional and causal associations of grip strength with cataract, glaucoma, diabetic retinopathy (DR), and age-related macular degeneration (AMD) and probe the underlying mechanisms by evaluating the mediating role of metabolomic alterations. Design: Cross sectional study. Subjects: A total of 307 796 UK Biobank participants with grip strength and covariates data available. Methods: Logistic regression models were used to evaluate the associations between grip strength and age-related ocular diseases. Two-sample Mendelian randomization analyses were conducted to assess the causality. Metabolic biomarkers from plasma samples were measured through nuclear magnetic resonance (n = 152 376), and principal component (PC) analysis was implemented to identify metabolic patterns (PC1-PC8). The mediation effects of both metabolic biomarkers and metabolic patterns were examined. Main Outcome Measures: The prevalence of age-related ocular diseases. Results: Compared with the highest tertile of grip strength, the lowest tertile had a higher prevalence of cataract (odds ratio [OR], 1.31; 95% confidence interval [CI], 1.24-1.39), glaucoma (OR, 1.23; 95% CI, 1.13-1.33), and DR (OR, 2.80; 95% CI, 2.32-3.38). Genetic-associated elevated grip strength of at least 1 hand was associated with a lower risk of developing cataracts, DR, and AMD. Mediation analyses showed metabolic patterns, characterized by altered lipids and omega-3 polyunsaturated fatty acids (PUFAs) decrement (i.e., PC2 and PC8), significantly mediated the association of grip strength with cataract and DR. Conclusions: Weaker grip strength is associated with cataracts, glaucoma, and DR. Metabolomic alterations, especially disrupted lipid metabolism and omega-3 PUFA decrement, serve to be the critical mediators. Financial Disclosures: Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
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