Energy intake and whole body protein dynamics in man
Bier, D.M.; Motil, K.J.; Matthews, D.E.; Burke, J.F.; Young, V.R.
Progress in Clinical and Biological Research 61: 161-180
1981
ISSN/ISBN: 0361-7742 PMID: 6798577 Document Number: 168609
Various aspects of studies on the interactions of energy intake and body protein metabolism are discussed, with particular reference to the use of stable amino acid isotope tracers (e.g., radiolabelled-leucine). These studies demonstrate the value of various stable isotope tracers for investigating the dynamics of amino acid and protein metabolism in man. The use of non-radioactive chemical probes and relatively short constant-infusion experiments permit investigations of currently unanswered questions concerning the interactions of various specific amino acids with protein (as well as non-protein) energy sources in a variety of population types (especially, growing children). Such investigations were not previously amenable to radiotracer studies. Data derived from such studies are described and assessed. (wlz)