Physicochemical determinants in hepatic extraction of small peptides
Ellen B. Hunter, Stephen P. Powers, Louis J. Kost, Delia I. Pinon, Laurence J. Miller, Nicholas F. LaRusso – 1 July 1990 – Although the liver is known to extract amino acids and organic anions by well‐characterized transport systems, the factors that regulate the hepatic uptake of small, circulating peptides are poorly understood. We previously reported that cholecystokinin octapeptide, a biologically active form of cholecystokinin, is efficiently cleared by the liver and that uptake depends on its carboxyl‐terminal tetrapeptide (Trp‐Met‐Asp‐PheNH2).