Mouse study: hindlimb immobilization muscle atrophy worsened vascular calcification and abdominal aortic aneurysms
In mice, inflammation-associated muscle atrophy from hindlimb immobilization accelerated vascular calcification and abdominal aortic aneurysm formation compared with aneurysm induction alone; irisin administration attenuated these changes, while blocking irisin signaling worsened them. [1]
Automatic summary · not editorially reviewed
The key findings
Clinical studies have consistently shown associations between sarcopenia and vascular aging phenotypes such as vascular calcification, atherosclerosis and abdominal aortic aneurysms. [1]
In a murine model combining hindlimb immobilization-induced muscle atrophy with CaPO₄-induced AAA, muscle atrophy markedly accelerated vascular calcification and AAA formation compared with AAA alone. [1]
Irisin administration attenuated vascular calcification and AAA progression, whereas inhibiting irisin signaling exacerbated these vascular pathologies. [1]
The source at a glance
- Study type / format
- Preclinical mouse study (abstract)
- Population / context
- Mice with hindlimb immobilization-induced muscle atrophy and CaPO₄-induced abdominal aortic aneurysms
- Summary based on
- Study abstract
- Original publication
- October 1, 2026
Sarcopenia-vascular links and the mouse crosstalk model
Clinical studies have consistently shown associations between sarcopenia and vascular aging phenotypes such as vascular calcification, atherosclerosis and abdominal aortic aneurysms (AAA). The molecular mechanisms linking muscle deterioration to vascular degeneration were described as poorly understood. To study muscle-vascular crosstalk, the authors established a murine model combining inflammation-associated muscle atrophy induced by hindlimb immobilization with CaPO₄-induced AAA.
Supporting source [1]
Atrophy accelerated calcification and AAA; irisin shifted the course
Muscle atrophy markedly accelerated vascular calcification and AAA formation in the combined model compared with AAA alone. This was accompanied by an enhanced osteogenic phenotype, downregulation of the Gas6/pAkt survival pathways and pronounced inflammatory responses in the aortic wall. Muscle atrophy significantly reduced muscular and circulating irisin levels. Irisin administration attenuated vascular calcification and AAA progression, whereas inhibiting irisin signaling exacerbated these vascular pathologies.
Supporting source [1]
Experimental evidence in mice, not proven human benefit
The authors conclude that muscle atrophy directly accelerated vascular calcification and AAA formation in this experimental setting and identify irisin as a key molecular mediator linking muscle atrophy to vascular degeneration. They highlight muscle-derived signaling as a critical target for preventing vascular pathologies. These are mouse experiments; the abstract reports no human trial, no human lifespan or disease outcome and no dosing information.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Findings come from a murine model and do not establish human benefit, human lifespan effects or dosing.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Song Z, Son BK, Oura M, Nanao-Hamai M, Toyoshima K, Komuro A, Ogawa S, Akishita M. · europepmc.org · October 1, 2026