Mainly Muscle, Jejunum, And Lung Fractional Protein Synthesis Rates Are Related To Whole-Body Protein Synthesis In The Pig

Rationale: To study protein metabolism, stable isotopes are used to measure whole-body protein synthesis (WbPS) and fractional protein synthesis rate (FSR) for tissues. In human studies, WbPS is often suggested to relate mainly to fractional muscle protein synthesis, but invasive tissue FSR measurements to confirm which organs contribute to WbPS are difficult. Therefore, we studied the relationship between WbPS and muscle FSR in the pig. Secondly, we studied WbPS and FSR in 11 other metabolic active organs.