Cellular senescence in aging skeletal muscle
How does cellular senescence in aging skeletal muscle relate to changes in muscle structure and physical function?
Following this research could clarify whether cellular senescence helps explain age-related changes in muscle. Reliable characterization in human muscle is needed to interpret its relationship with physical function.
Where it stands now
Main bottleneck
Current evidence does not establish whether senescence can be characterized reliably across human muscle samples or whether its associations with muscle structure and function reflect a contribution to decline.
Watch next
A human study demonstrating reproducible characterization of muscle senescence and testing whether those measurements track changes in muscle structure and physical function over time.
Progress timeline
How the evidence has changed over time.
2023 · 1 update
- What human muscle biopsies reveal about aging-related cell signals and strengthResearch note 2 of 2 · Source date 2023-07-11
Since the previous research note · Earlier expectation not tested
Track continuity
Since the previous research note: Old mouse muscle shows distinct signs of senescence in support cells and fibers
Previous expectation: Safely targeting harmful cellular states in aging muscle might help older adults retain strength and independence.
What this study adds: The July 2023 study demonstrated that several senescence-associated markers could be characterised in human muscle and compared with morphology and physical function across middle and older ages. Its inconsistent exploratory associations did not test whether targeting those states improves function.
Current research note
2022 · 1 update
- Old mouse muscle shows distinct signs of senescence in support cells and fibersResearch note 1 of 2 · Source date 2022-07-15
How this Track works
This page changes as new evidence arrives. Open any update to see what researchers found at that point in the story.