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Sha T, Wang N, Wei J, He H, Wang Y, Zeng C, Lei G. Genetically Predicted Levels of Serum Metabolites and Risk of Sarcopenia: A Mendelian Randomization Study. Nutrients 2023; 15:3964. [PMID: 37764748 PMCID: PMC10536442 DOI: 10.3390/nu15183964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Metabolites' connection to sarcopenia through inflammation and mitochondrial dysfunction is presumed, but their impact remains unclear due to limitations in conventional observational studies caused by confounding bias and reverse causation. We conducted a Mendelian randomization (MR) analysis to elucidate the association of serum metabolites with sarcopenia and its related traits, i.e., appendicular lean mass and grip strength. Genetic instruments to proxy the serum metabolites were extracted from the most comprehensive genome-wide association study on the topic published so far. The corresponding summary statistics for the associations of genetic instruments with outcomes were calculated from the UK Biobank (n = 324,976 participants). The primary analyses were assessed by an inverse-variance weighted (IVW) method. The weighted median and MR-PRESSO methods were used as sensitive analyses. Fourteen genetically predicted serum metabolites were associated with the risk of sarcopenia (PIVW < 0.05). Two metabolites showed the overlapped association with sarcopenia and its related traits, which were isovalerylcarnitine (sarcopenia: odds ratio [OR] = 4.00, 95% confidence interval [CI] = 1.11~14.52, PIVW = 0.034; appendicular lean mass: β = -0.45 kg, 95% CI = -0.81~-0.09, PIVW = 0.015; grip strength: β = -1.51 kg, 95% CI = -2.31~-0.71, PIVW = 2.19 × 10-4) and docosapentaenoate (sarcopenia: OR = 0.16, 95% CI = 0.03~0.83, PIVW = 0.029; appendicular lean mass: β = -0.45 kg, 95% CI = 0.08~0.81, PIVW = 0.016). Twenty-seven metabolites were suggestive associated with appendicular lean mass or grip strength. This MR study provided evidence for the potential effects of metabolites on sarcopenia.
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Affiliation(s)
- Tingting Sha
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
- Key Laboratory of Aging-Related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha 410008, China;
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China
| | - Ning Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
| | - Jie Wei
- Key Laboratory of Aging-Related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha 410008, China;
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China
- Health Management Center, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Hongyi He
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
| | - Yilun Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
| | - Chao Zeng
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
- Key Laboratory of Aging-Related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha 410008, China;
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Guanghua Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; (T.S.); (N.W.); (H.H.)
- Key Laboratory of Aging-Related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha 410008, China;
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
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