The protein content of the gastrointestinal tract is not more than 7 % of whole-body protein, while the amount of protein synthesized daily exceeds 20% of whole-body protein synthesis. Considering this active protein metabolism in the gastrointestinal tract as well as the role of the gastrointestinal tract in digestion and absorption, we have investigated fluxes of N and amino acids (AA) in rel...

Our understanding of the physiology of digestion, absorption, secretion, and motility in the gastrointestinal tract has improved immensely. Today it is well established that the gross functions of the gastrointestinal tract depend on the coordination between the muscles, nerves and hormones. The enteric nervous system (ENS) is involved in most of the physiological and pathophysiological process...