What does rapamycin do to old mouse muscles?
Rapamycin Treatment Induces Lipidomic and Metabolic Changes in Skeletal Muscle of Aged Mice with Hyperactive mTORC1
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists gave a drug called rapamycin to old mice with overactive muscle growth signals to see how it changed their muscle chemicals.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
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Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists gave a drug called rapamycin to old mice with overactive muscle growth signals to see how it changed their muscle chemicals.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 59 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
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Claims (4)
Rapamycin might help older animals keep their muscle and stay lean by tweaking a key cell signal involved in aging.
In older mice with overactive muscle metabolism, giving them a drug called rapamycin changes the types of fats in their muscles — some go up, some go down — which might mean the drug helps reset how aging muscles handle fat.
Older mice with overactive mTORC1 had higher levels of certain muscle-related amino acid processes after taking rapamycin, which might help muscles handle stress and stay healthy.
Older male mice have bigger changes in muscle chemicals after taking rapamycin than older female mice, suggesting their bodies respond differently to this drug as they age.