ArticleJournal of cellular physiology2025
In Old Mice, Exercise Induces Inflammation and Fibrosis Unless Alk5-Inhibitor and Oxytocin Are Used.
Article in Journal of cellular physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Exercise-induced neuropeptidergic and neurochemical neuroadaptation in stress regulation and emotional disorders.Acta neurologica Belgica · 2026Review
- Human microphysiological systems of aging recreate the in vivo process expediting evaluation of anti-geronic strategies.Nature biomedical engineering · 2026Article
- Oxytocin as a regulator of skeletal muscle plasticity and metabolic function.Frontiers in endocrinology · 2026Review
Corrections and comments
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Authors and funding
9 authors.
Funding
Abstract
Exercise and diet are the best-known methods for attenuating aging-related health decline. However, exercise in older age has diminished gains of strength and agility, and a danger of unrepaired muscle damage. Improving the understanding of age-related differences in response to exercise, our results demonstrate that in old mice, downhill treadmill (eccentric) exercise causes increased influx of CD45+ cells (inflammation) and fibrotic index (fibrosis) in the heart and skeletal muscles. To explain these changes, we identified newly synthesized proteins through bio-orthogonal noncanonical amino acid tagging (BONCAT) and established that exercise exacerbated age-associated protein patterns through a dysregulated transforming growth factor (TGF)-β, Ras/MAPK/PI3Akt, and JAK/STAT pathways. Testing causality, we found that an inhibitor of TGF-β (Alk5 inhibitor, A5i) in combination with the age-diminished peptide oxytocin, previously shown to rejuvenate muscle and brain in sedentary animals, allowed aged mice to exercise without pathologies of skeletal and heart muscles and youthfully restored their de novo proteomes.
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Registered trials
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