Aaron Salinas-Rodriguez , Betty Manrique-Espinoza , Ana Rivera-Almaraz , José Manuel Sánchez-López , Haydeé Rosas-Vargas
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引用次数: 0
Abstract
Background
Telomere length (TL) shortening has been identified as a marker of aging and associated with adverse health outcomes, but evidence of its association with sarcopenia is inconclusive.
Aims
Estimate the cross-sectional and prospective associations between TL and sarcopenia.
Methods
We used data from Waves 3 and 4 (2017, 2021) of the Study on Global Aging and Adult Health in Mexico (SAGE-Mexico). The cross-sectional sample consisted of 1,738 adults aged 50 and older, and the longitudinal sample consisted of 1,437. Relative TL was determined by real-time quantitative polymerase chain reaction (qPCR) on DNA extracted from saliva samples and quantified as the telomere/single-copy gene (T/S) ratio. Sarcopenia was defined according to the European Working Group on Sarcopenia in Older People (EWGSOP2).
Results
The mean salivary TL was 1.50 T/S units (95% CI: 1.49–1.52). The baseline prevalence of sarcopenia was 13.3% (95% CI: 9.8–16.8%). The incidence and persistence of sarcopenia were 6.8% (95% CI: 5.0–9.5%) and 7.0% (95% CI: 5.1–9.6%), respectively. The results showed that a one standard deviation decrease in TL was cross-sectionally associated with higher odds of sarcopenia (OR = 1.31; 95% CI: 1.03–1.67) and prospectively with a higher incidence (RRR = 1.55; 95% CI: 1.06–2.25) and persistence (RRR = 1.50; 95% CI: 1.01–2.24) of sarcopenia.
Conclusions
Older adults with shorter TL had higher rates of incident and persistent sarcopenia. Implementation of interventions to delay the decline of TL in older adults is warranted. Further translational studies are needed to elucidate the effects of exercise or diet on DNA repair in the telomeric region and their associations with sarcopenia.
期刊介绍:
Archives of Medical Research serves as a platform for publishing original peer-reviewed medical research, aiming to bridge gaps created by medical specialization. The journal covers three main categories - biomedical, clinical, and epidemiological contributions, along with review articles and preliminary communications. With an international scope, it presents the study of diseases from diverse perspectives, offering the medical community original investigations ranging from molecular biology to clinical epidemiology in a single publication.