TY - JOUR
T1 - Tc-99m-galactosyl-neoglycoalbumin
T2 - In vivo characterization of receptor-mediated binding to hepatocytes
AU - Vera, D. R.
AU - Krohn, K. A.
AU - Stadalnik, R. C.
AU - Scheibe, P. O.
PY - 1984
Y1 - 1984
N2 - The biodistribution and kinetics of a receptor-binding hepatic radiopharmaceutical, Tc-99m-galactosyl-neoglycoalbumin (Tc-NGA), were investigated using mammalian and avian models. The radiopharmaceutical exhibited four significant features associated with receptor-mediated binding at the hepatocyte membrane in mammals: (a) high tissue specificity, (b) high molecular specificity, (c) affinity-dependent uptake, and (d) dose-dependent uptake. Diminished hepatic uptake by the avian model illustrated low nonspecific binding. The kinetic sensitivity to ligand-receptor affinity and stoichiometry illustrated the principal feature of receptor-binding radiopharmaceuticals, namely, quantitative assessment of tissue function based upon the biochemical interaction of a ligand and its specific receptor.
AB - The biodistribution and kinetics of a receptor-binding hepatic radiopharmaceutical, Tc-99m-galactosyl-neoglycoalbumin (Tc-NGA), were investigated using mammalian and avian models. The radiopharmaceutical exhibited four significant features associated with receptor-mediated binding at the hepatocyte membrane in mammals: (a) high tissue specificity, (b) high molecular specificity, (c) affinity-dependent uptake, and (d) dose-dependent uptake. Diminished hepatic uptake by the avian model illustrated low nonspecific binding. The kinetic sensitivity to ligand-receptor affinity and stoichiometry illustrated the principal feature of receptor-binding radiopharmaceuticals, namely, quantitative assessment of tissue function based upon the biochemical interaction of a ligand and its specific receptor.
UR - http://www.scopus.com/inward/record.url?scp=0021344709&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0021344709&partnerID=8YFLogxK
U2 - 10.1148/radiology.151.1.6701314
DO - 10.1148/radiology.151.1.6701314
M3 - Article
C2 - 6701314
AN - SCOPUS:0021344709
SN - 0033-8419
VL - 151
SP - 191
EP - 196
JO - RADIOLOGY
JF - RADIOLOGY
IS - 1
ER -