Free α-Amino-N Content of Peripheric and Hepatic Venous Blood of Normal Adults

ALTHOUGH the α-amino-N content of human peripheric venous blood in health and liver disease is well known, the amino-acid content of the hepatic venous blood has been investigated only in the lower animals. Comparative quantitative analyses of peripheric and hepatic venous blood of human beings have not been carried out. Such analyses could clarify the protein synthesis in the liver. The differences between the inflow of amino-acids by the portal vein and hepatic artery, and as an analogue to this, peripheral circulation on one hand and the excretion of amino-acids by the hepatic vein on the other, are a partial measurement for the protein synthesis from amino-acids by the liver.