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Related Experiment Video

Updated: May 26, 2026

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome

Published on: September 23, 2015

5-HT(2B) receptors are required for serotonin-selective antidepressant actions.

S L Diaz¹, S Doly, N Narboux-Nême

¹UMR-S839 INSERM, Paris, France.

Molecular Psychiatry

|December 14, 2011

Summary

Serotonin-selective reuptake inhibitor (SSRI) antidepressants require 5-HT(2B) receptors for their long-term therapeutic effects. Activating these serotonin receptors mimics SSRI actions, suggesting 5-HT(2B) as a novel depression treatment target.

Related Experiment Videos

Last Updated: May 26, 2026

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome

Published on: September 23, 2015

Area of Science:

Neuroscience
Pharmacology
Molecular Biology

Background:

Serotonin-selective reuptake inhibitors (SSRIs) are primary antidepressants, acting via serotonin transporter blockade.
Their therapeutic efficacy depends on long-term adaptive changes in neuronal receptors.

Purpose of the Study:

To investigate the role of 5-HT(2B) receptors in mediating the long-term effects of SSRIs.
To explore 5-HT(2B) receptor agonists as potential therapeutic agents for depression.

Main Methods:

Genetic and pharmacological inactivation of 5-HT(2B) receptors in behavioral and neurogenic assays.
Administration of selective 5-HT(2B) receptor agonists.
Measurement of extracellular serotonin concentrations in the hippocampus.

Main Results:

Inactivation of 5-HT(2B) receptors abolished long-term SSRI-induced behavioral and neurogenic effects.
Direct stimulation of 5-HT(2B) receptors produced SSRI-like responses.
5-HT(2B) receptor activation positively modulates serotonergic neuron activity and serotonin levels.

Conclusions:

The 5-HT(2B) receptor is essential for the therapeutic actions of SSRIs.
Targeting the 5-HT(2B) receptor offers a promising new strategy for depression treatment.