Demonstration of specific high affinity binding sites for [3H] imipramine in human brain

Moshe Rehavi, Steven M. Paul, Phil Skolnick, Frederick K. Goodwin

Research output: Contribution to journalArticlepeer-review

158 Scopus citations

Abstract

High affinity binding sites (Kd = 1.7 nM) for [3H] imipramine have been characterized in membranes prepared from human brain. The binding of [3H] imipramine was found to be saturable, reversible, and inhibited by pharmacologically active tricyclic antidepressants. Other psychoactive compounds as well as most neurotransmitter substances were ineffective in inhibiting [3H] imipramine binding at concentrations up to 10 μM. The hypothalamus was found to contain a relatively high density of these binding sites and is enriched approximately 4-fold when compared to cerebral and cerebellar cortex. A very good correlation (r = 0.97) p < 0.001 was found between the abilities of a series of clinically active tricyclic antidepressants in displacing specifically bound [3H] imipramine from human brain and platelet membranes, suggesting that the binding sites from these two tissues are very similar.

Original languageEnglish
Pages (from-to)2273-2279
Number of pages7
JournalLife Sciences
Volume26
Issue number26
DOIs
StatePublished - Jun 30 1980

Fingerprint

Dive into the research topics of 'Demonstration of specific high affinity binding sites for [3H] imipramine in human brain'. Together they form a unique fingerprint.

Cite this