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The Interactome in the Evolution From Frailty to Sarcopenic Dependence.
Ana Coto-Montes1,2,3, Laura González-Blanco4, Eduardo Antuña1,2,3
1Department of Cell Biology and Morphology, Faculty of Medicine, University of Oviedo, Oviedo, Spain.
Frontiers in Cell and Developmental Biology
|December 20, 2021
Summary
Cellular changes in muscle, particularly in autophagy, are key indicators of frailty progression in aging. Understanding these biomarker shifts can help detect frailty early, preventing the decline into dependence.
Area of Science:
- Gerontology
- Cell Biology
- Biomarker Discovery
Background:
- Biomarker validation is crucial for accurate diagnosis and prevention, especially for complex conditions like frailty.
- Sarcopenia shares mechanisms with frailty, making it a potential source for robust frailty biomarkers.
Purpose of the Study:
- To investigate the temporal evolution of the cellular interactome in aging, specifically in relation to frailty.
- To examine altered cellular mechanisms in overweight elderly individuals and their progression from independence to dependence.
Main Methods:
- Studied the cellular interactome's temporal evolution in aging individuals across different functional statuses (independent to dependent).
- Focused on overweight elderly individuals to assess frailty-related mechanisms and their aggravation with increasing dependence.
Main Results:
- Autophagy plays a predominant role in cellular interactome control, influencing mitochondrial capacity and oxidative stress.
- Overweight elderly showed overloaded autophagy, maintaining cell survival initially, but leading to autophagic inactivity and apoptosis in dependent elderly.
Conclusions:
- Autophagic dysfunction is a critical factor in the progression of frailty and muscle aging.
- Identifying these cellular changes as biomarkers could enable early detection and prevention of frailty and dependence.
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