ArticleJournal of applied physiology (Bethesda, Md. : 1985)2017
Muscle-specific and age-related changes in protein synthesis and protein degradation in response to hindlimb unloading in rats.
Article in Journal of applied physiology (Bethesda, Md. : 1985), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.
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Who cites it
75 citing papers in PubMed, 114 citations in OpenAlex.
- Mechanical loading of bioengineered skeletal muscle in vitro recapitulates gene expression signatures of resistance exercise in vivo.Journal of cellular physiology · 2021Trial
- Macroscopic to ultrastructural analyses identify the loss of myofibrils as the primary mediator of ageing- and disuse-induced muscle fibre atrophy.The Journal of physiology · 2026Article
- Sustained loss ofbioRxiv : the preprint server for biology · 2026Article
- Heat treatment combined with hybrid exercises retraining mitigates cellular markers of protein turnover after hindlimb suspension in male mice: A pilot study.Experimental physiology · 2026Article
- Cognitive and biochemical responses to continuous moderate and extensive interval exercise in randomized elderly male rats.BMC sports science, medicine & rehabilitation · 2026Article
- Stretch-shortening cycles mitigate single muscle fibre power deficits following a two-week immobilization of the rat hindlimb.Journal of muscle research and cell motility · 2026Article
- Repeated Disuse Atrophy Imprints a Molecular Memory in Skeletal Muscle: Transcriptional Resilience in Young Adults and Susceptibility in Aged Muscle.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Weight loss with GLP-1 medicines does not result in a disproportionate loss of muscle mass or function in obese mice and humans.Cell reports. Medicine · 2026Article
- Neuromuscular Electrical Stimulation to Combat Muscle Atrophy During Spaceflight: A Narrative Review of Mechanisms and Potential Applications.Life (Basel, Switzerland) · 2026Review
- Early Unloading After ACL Rupture and Prior to Surgical Restabilization in Mice Slows Post-Traumatic Osteoarthritis Progression.Cartilage · 2026Article
- Autophagy selectively clears ER in TNF-α-induced muscle atrophy.Autophagy reports · 2026Article
- International Society of Sports Nutrition Position Stand: Long-Chain Omega-3 Polyunsaturated Fatty Acids.Journal of the International Society of Sports Nutrition · 2025Review
- Response of UBR-box E3 ubiquitin ligases and protein quality control pathways to perturbations in protein synthesis and skeletal muscle size.American journal of physiology. Cell physiology · 2025Article
- Stigmasterol Protects Against Dexamethasone-Induced Muscle Atrophy by Modulating the FoxO3-MuRF1/MAFbx Signaling Pathway in C2C12 Myotubes and Mouse Skeletal Muscle.Biomolecules · 2025Article
- Response of UBR-box E3 ubiquitin ligases and protein quality control pathways to perturbations in protein synthesis and skeletal muscle size.bioRxiv : the preprint server for biology · 2025Article
- Brief ambulatory reloading elevates muscle protein synthesis but does not prevent disuse atrophy in hindlimb-unloaded rats.Biochemistry and biophysics reports · 2025Article
- The impact of mitokine MOTS-c administration on the soleus muscle of rats subjected to a 7-day hindlimb suspension.Journal of muscle research and cell motility · 2025Article
- Applying lessons from limb muscle disuse and ageing to better understand ventilator-induced diaphragm dysfunction.Experimental physiology · 2025Review
- Review
- Bioreactor development for skeletal muscle hypertrophy and atrophy by manipulating uniaxial cyclic strain: proof of concept.NPJ microgravity · 2024Article
15 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
Disuse is a potent inducer of muscle atrophy, but the molecular mechanisms driving this loss of muscle mass are highly debated. In particular, the extent to which disuse triggers decreases in protein synthesis or increases in protein degradation, and whether these changes are uniform across muscles or influenced by age, is unclear. We aimed to determine the impact of disuse on protein synthesis and protein degradation in lower limb muscles of varied function and fiber type in adult and old rats. Alterations in protein synthesis and degradation were measured in the soleus, medial gastrocnemius, and tibialis anterior (TA) muscles of adult and old rats subjected to hindlimb unloading (HU) for 3, 7, or 14 days. Loss of muscle mass was progressive during the unloading period, but highly variable (-9 to -38%) across muscle types and between ages. Protein synthesis decreased significantly in all muscles, except for the old TA. Atrophy-associated gene expression was only loosely associated with protein degradation as muscle RING finger-1, muscle atrophy F-box (MAFbx), and Forkhead box O1 expression significantly increased in all muscles, but an increase in proteasome activity was only observed in the adult soleus. MAFbx protein levels were significantly higher in the old muscles compared with adult muscles, despite the old having higher expression of microRNA-23a. These results indicate that adult and old muscles respond similarly to HU, and the greatest loss in muscle mass occurs in predominantly slow-twitch extensor muscles due to a concomitant decrease in protein synthesis and increase in protein degradation.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.