Mouse heart and diaphragm proteomics in aging: an abstract-only study
In an established mouse model of sarcopenia, comparative proteomics of heart and diaphragm found age-related myofiber degeneration, metabolic changes and more extracellular matrix, plus lower levels of two mitochondrial enzymes. This is an abstract only. [1]
Automatic summary · not editorially reviewed
The key findings
The study used comparative protein profiling of heart and diaphragm in an established mouse model of sarcopenia. [1]
Aging in these mice was associated with myofiber degeneration, metabolic changes and increased extracellular matrix deposition. [1]
The authors propose the altered protein profile could help establish an improved biomarker signature for monitoring muscle aging. [1]
The source at a glance
- Study type / format
- Preclinical comparative proteomics study (abstract only)
- Population / context
- Mice in an established model of sarcopenia; heart and diaphragm muscle.
- Summary based on
- Study abstract
- Original publication
- October 2, 2026
Mouse model comparing aged heart and diaphragm proteins
The researchers studied an established mouse model of sarcopenia, the age-related loss of skeletal muscle mass and strength. They used comparative protein profiling of two muscles at once: the heart and the diaphragm. The abstract does not report the animals' ages, group sizes or how aged and younger animals were compared.
Supporting source [1]
Protein findings in aged mouse heart and diaphragm
The protein measurements linked aging in these mice to degeneration of muscle fibers, considerable changes in metabolic processes and increased deposition of extracellular matrix, the material around cells. Two mitochondrial enzymes were markedly reduced: NAD(P) transhydrogenase in the aged heart and hydroxymethylglutaryl-CoA synthase in the aged diaphragm. The abstract does not give the size of these reductions.
Supporting source [1]
Bioinformatic protein patterns and biomarker aim
Bioinformatic analyses showed changes in the abundance of distinct protein families and possible changes in how proteins interact with each other. The authors suggest the altered protein profile of the heart-diaphragm system could help build an improved biomarker signature for monitoring muscle aging in diagnosis, prognosis and therapy. This is a proposal, not a validated biomarker.
Supporting source [1]
How to interpret this
Only the abstract was reviewed; the full text was not reviewed. The abstract does not report animal ages, sample sizes, effect sizes or validation of any biomarker. Findings come from mice and are associations, not proven causes or human lifespan benefits.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Dowling P, Zweyer M, Nebeling F, Swandulla D, Ohlendieck K. · europepmc.org · October 2, 2026