Anabolic signaling deficits underlie amino acid resistance of wasting, aging muscle

@article{Cuthbertson2005AnabolicSD,
  title={Anabolic signaling deficits underlie amino acid resistance of wasting, aging muscle},
  author={Daniel J. Cuthbertson and Kenneth Smith and John Babraj and Graham P. Leese and Tom Waddell and Philip J. Atherton and Henning Wackerhage and Peter M. Taylor and Michael John Rennie},
  journal={The FASEB Journal},
  year={2005},
  volume={19}
}
The nature of the deficit underlying age‐related muscle wasting remains controversial. To test whether it could be due to a poor anabolic response to dietary amino acids, we measured the rates of myofibrillar and sarcoplasmic muscle protein synthesis (MPS) in 44 healthy young and old men, of similar body build, after ingesting different amounts of essential amino acids (EAA). Basal rates of MPS were indistinguishable, but the elderly showed less anabolic sensitivity and responsiveness of MPS to… 
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