Preferential expression of 5-HT1D over 5-HT1B receptors during early embryogenesis

Neuroreport
F Bolaños-JimenezL Maroteaux

Abstract

The cloning and pharmacological characterization of mouse 5-HT1D receptors as well as the comparative analysis of its embryonic expression vs that of 5-HT1B receptors are reported. High densities of both 5-HT1D receptors mRNA and specific 5-HT1D binding sites were detected at 8, 9.5, 10.5 and 13.5 days of prenatal development. In contrast, no specific 5-HT1B binding sites could be detected until 13.5 days of development, when they were present at lower levels than 5-HT1D receptors. This differs markedly from the situation in the adult brain, in which 5-HT1B receptors are present at a much higher density than the 5-HT1D subtype. These data suggest the involvement of 5-HT1D receptors in the mitogenic and proliferative effects of serotonin during early embryonic development.

Citations

Jul 10, 2003·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Gabriel ManjarrezJorge Hernandez-R
Feb 3, 1999·Annals of the New York Academy of Sciences·D S ChoiL Maroteaux
Jan 22, 2008·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Ivett Medina-AguirreGabriel Manjarrez-Gutiérrez

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