1. Frailty increases depression risk independently of cognitive decline: Insights from Mendelian randomization and cross-sectional analysis.
- Author
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Li W, Tian Q, Duan J, Liu X, Shou J, Tang T, Yu W, and Lü Y
- Abstract
Background: Frailty, cognitive decline, and depression are common syndromes among the elderly and are closely interconnected. However, it is still unclear whether the impact of frailty on depression depends on the role of cognitive decline., Method: We conducted the Mendelian randomization (MR) analysis based on the instrumental variables (IVs) from the genome-wide association study (GWAS) databases, and we also performed a cross-sectional study consisting of 1362 older adults aged ≥65 for validation., Results: The results of the multivariable MR analysis showed that frailty significantly increased the risk of depression, even after controlling for the influence of cognitive performance. Conversely, after controlling for frailty, the effect of cognitive performance on depression risk was noticeably reduced. In the cross-sectional study, frailty mediated 24.04 % of the relationship between cognition and depression, and cognition mediated 7.63 % of the relationship between frailty and depression., Conclusions: We provide evidence that frailty could increase depression risk independently of cognitive decline. Further research with a larger sample size is necessary., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Yang Lv reports financial support was provided by Chongqing Talent Plan. Yang Lv reports financial support was provided by Key Project of Technological Innovation and Application Development of Chongqing Science & Technology Bureau. Yang Lv reports financial support was provided by Science Innovation Programs Led by the Academicians in Chongqing. Yang Lv reports financial support was provided by Chongqing Medical Key Discipline and Regional Medical Key Discipline Development Project. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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