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Research Article

5-HT Receptors: Subtypes and Second Messengers

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Pages 197-214 | Published online: 26 Sep 2008
 

Abstract

Our knowledge about 5-HT (serotonin, 5-hydroxytryptamine) receptors has gained significantly over the recent few years. The discovery of selective ligands and the use of new techniques have led to a significant increase in the number of recognised receptors subtypes. The present status of awareness is largely related to the use of radioligand binding studies, autoradiography, second messenger analysis and more recently, molecular biological techniques. Three main families of 5-HT receptors, of which subtypes have been described, are now accepted. This heterogeneity is further substantiated by the cloning of the cDNA's of three different 5-HT receptors. This article reviews some of the recent developments which led to the characterisation of 5-HT receptor subtypes.

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