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High‐ and Low‐Affinity Binding of [ 3 H]Imipramine in Mouse Cerebral Cortex
Author(s) -
Reith M. E. A.,
Sershen H.,
Allen D.,
Lajtha A.
Publication year - 1983
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1111/j.1471-4159.1983.tb11294.x
Subject(s) - imipramine , cerebral cortex , serotonin , binding site , ligand (biochemistry) , scatchard plot , chemistry , cortex (anatomy) , receptor , biophysics , biochemistry , medicine , endocrinology , neuroscience , biology , pathology , alternative medicine
Binding of [ 3 H]imipramine in mouse cerebral cortex was found to be nonhomogeneous. Competition experiments, Scatchard analysis and Hill plots are compatible with the existence of binding with high (nanomo‐lar) and low (micromolar) affinity. Low‐affinity binding could be eliminated by the use of low concentrations of imipramine as the competing ligand. In contrast to the high‐affinity binding, the low‐affinity binding was found to be unrelated to the neuronal uptake system for serotonin.