Effects of prenatal stress and monoaminergic perturbations on the expression of serotonin 5-HT₄ and adrenergic β₂ receptors in the embryonic mouse telencephalon

Brain Research
Angela ChenSkirmantas Janušonis

Abstract

The serotonin 5-HT(4) receptor (5-HT(4)R) is coded by a complex gene that produces four mRNA splice variants in mice (5-HT(4(a))R, 5-HT(4(b))R, 5-HT(4(e))R, 5-HT(4(f))R). This receptor has highly dynamic expression in brain development and its splice variants differ in their developmental trajectories. Since 5-HT(4)Rs are important in forebrain function (including forebrain control of serotonergic activity in the brainstem), we investigated the susceptibility of 5-HT(4)R expression in the mouse embryonic telencephalon to prenatal maternal stress and altered serotonin (5-hydroxytryptamine, 5-HT) levels. Because the gene coding the adrenergic β(2) receptor (β(2)AR) is embedded in the 5-HT(4)R gene, we also investigated whether 5-HT(4)R mRNA levels were modulated by selective β(2)AR agents. Timed-pregnant C57BL/6 mice were treated beginning at embryonic day (E) 14 and quantitative reverse-transcription polymerase chain reaction (qRT-PCR) was used to assess the mRNA levels of all 5-HT(4)R splice variants and β(2)AR in the embryonic telencephalon at E17. Maternal prenatal stress and 5-HT depletion with pCPA, a tryptophan hydroxylase inhibitor, reduced the levels of the 5-HT(4(b))R splice variant. Terbutaline (a selective β(2)AR agon...Continue Reading

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Citations

Jul 22, 2014·Journal of Cellular Biochemistry·Alison G Paquette, Carmen J Marsit
Jun 14, 2013·Journal of Psychopharmacology·Elemer Szabadi
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Feb 27, 2017·Neuroscience and Biobehavioral Reviews·Florian RakersMatthias Schwab
Nov 16, 2018·International Journal of Molecular Sciences·Heike RebholzJulia Castello

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