Mitochondrial Substrate Utilization Following Contraction in 3D Engineered Muscle Tissue Models of Aging
2024
Mitochondrial Function in Aging Muscle Tissue
Sample size: 12
publication
Evidence: moderate
Author Information
Author(s): Campbell Matthew, Erker Jayma, Mack David, Marcinek David
Primary Institution: University of Washington
Hypothesis
Aged muscle mitochondria do not utilize substrates the same way young muscle mitochondria do following contraction.
Conclusion
Aged muscle shows impaired metabolic signaling and substrate utilization compared to young muscle after contraction.
Supporting Evidence
- Aged muscle mitochondria show different substrate utilization compared to young muscle.
- High-intensity contraction inhibits oxidation of glutamate in aged muscle.
- 3D engineered muscle tissue models provide insights into muscle aging mechanisms.
Takeaway
As we get older, our muscles don't use energy the same way, especially after exercise, which can make it harder to stay strong.
Methodology
Developed a 3D engineered muscle tissue model using primary human myoblasts from older adults to test muscle contraction and mitochondrial function.
Participant Demographics
Older adults with well-phenotyped characteristics.
Digital Object Identifier (DOI)
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