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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Binding of typical and atypical antipsychotic agents to 5-hydroxytryptamine-6 and 5-hydroxytryptamine-7 receptors.

The authors examined the affinities of 36 typical and atypical antipsychotic agents for the cloned rat 5-hydroxytryptamine-6 (5-HT6) and rat 5-hydroxytryptamine-7 (5-HT7) receptors in transiently expressed COS-7 cells (5-HT7) or stably transfected HEK-293 cells (5-HT6 receptors). Clozapine and several related atypical antipsychotic agents (rilapine, olanzepine, tiospirone, fluperlapine, clorotepine and zotepine) had high affinities for the newly discovered 5-HT6 receptor ( Kis < 20 nM). The 5-HT7 receptor bound clozapine, rilapine, fluperlapine, clorotepine, zotepine and risperidone but not tiospirone and olanzepine, with affinities less than 15 nM. In addition, several typical antipsychotic agents (chloroprothixene, chlorpromazine, clothiapine and fluphenazine) had high affinities for both the 5-HT6 and 5-HT7 receptors. Pimozide, a diphenylbutylpiperidine, had the highest affinity of all the typical antipsychotic agents tested for the 5-HT7 receptor (Ki = 0.5 nM). Three putative atypical antipsychotic agents melperone, amperozide and MDL 100907 did not bind with high affinities to either the 5-HT6 or 5-HT7 receptors ( Kis > 50 nM). Several dopamine-selective antipsychotic agents (raclopride, rimcazole and penfluridol) had essentially no affinity for either the 5-HT6 or 5-HT7 receptors (Ki values > 5000 nM).(ABSTRACT TRUNCATED AT 250 WORDS)[1]


  1. Binding of typical and atypical antipsychotic agents to 5-hydroxytryptamine-6 and 5-hydroxytryptamine-7 receptors. Roth, B.L., Craigo, S.C., Choudhary, M.S., Uluer, A., Monsma, F.J., Shen, Y., Meltzer, H.Y., Sibley, D.R. J. Pharmacol. Exp. Ther. (1994) [Pubmed]
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