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Clinical Trial Summary

Muscle failure (sarcopenia or dynapenia) is a factor of frailty and therefore, ultimately, of loss of autonomy in the elderly. Currently, no biomarker of muscle failure has a high sensitivity, specificity and positive predictive value. Several results, although preliminary, suggest that metabolomics could facilitate the early identification of frail patients, allowing the implementation of primary prevention strategies. Untargeted high-resolution metabolomics analysis would identify discriminative biomarkers and biological mechanisms associated with frailty. Finally, the hypothesis that metabolic signatures can be identified as risk factors for the development of age-related dynapenia should be tested in a longitudinal design.

Clinical Trial Description

Sarcopenia is defined as decreased muscle strength and low muscle quantity or quality. Screening and management of sarcopenia was modified in early 2019 by the European Working Group on Sarcopenia in Older People (EWGSOP) with the creation of the F-A-C-S (Find-Assess-Confirm-Severity) protocol. The search for sarcopenia (Find) is done during the interrogation of the patient expressing symptoms that may be related to the loss of muscle mass, such as falls, asthenia, weight loss, decreased walking speed, or difficulty getting up from a chair. A simple self-report questionnaire (SARC-F) has been created to facilitate screening. Clinical suspicion of sarcopenia requires the performance of a functional assessment (Assess), using for example grip strength.and the chair lift test to look for decreased muscle strength. A pathological result already allows the suspicion of sarcopenia and the introduction of secondary prophylactic measures. Diagnostic confirmation of sarcopenia (Confirm) can be obtained by demonstrating a decrease in muscle mass by one of four validated techniques: magnetic resonance imaging (MRI), computed tomography (CT), dual-energy X-ray absorptiometry (DXA) (Buckinx et al., 2018), or bioimpedancemetry (Rossi et al., 2014). Sarcopenia is considered severe (Severity) if there is a decrease in overall physical performance objectified by physical tests such as the Time Up and Go Test, walking speed, or the Short Physical Performance Battery (SPPB) test. The development and validation of a single biomarker could be a simple and cost-effective way to diagnose and monitor individuals with sarcopenia. Potential biomarkers could include markers of neuromuscular junction, muscle protein turnover, behaviorally mediated pathways, inflammation-mediated pathways, redox-related factors, and hormones or other anabolic factors (Curcio et al., 2016). However, due to the complex pathophysiology of sarcopenia, it is unlikely that a single biomarker can identify the disease in the heterogeneous population of young and old. Instead, the development of a panel of biomarkers should be considered, including potential serum markers and tissue markers. Implementing a multidimensional methodology for modeling these pathways could provide a means to stratify risk for sarcopenia, facilitate identification of worsening of the condition, and track treatment efficacy. In the context of physical frailty and sarcopenia, the study of dynamic metabolic responses to stressors and the characterization of the biochemical pathways involved are particularly relevant, as this condition is closely associated with metabolic disorders. Disturbances in protein and amino acid metabolism may contribute substantially to the pathophysiology of sarcopenia. The hypothesis that metabolic signatures can be identified as risk factors for the development of age-related sarcopenia needs to be tested in a longitudinal design. The main objective is to Identify metabolomic signatures of muscle failure in the elderly. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05199207
Study type Interventional
Source Centre Hospitalier Universitaire de Nice
Status Completed
Phase N/A
Start date January 11, 2022
Completion date July 5, 2022

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