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Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome
Published on: September 23, 2015
Developmental changes of serotonin 4(a) receptor expression in the rat pre-Bötzinger complex
Till Manzke1, Stefan Preusse, Swen Hülsmann
1Department of Neuro- and Sensory Physiology, Georg-August-University of Göttingen, 37073 Göttingen, Germany. tmanzke@gwdg.de
The Journal of Comparative Neurology
|December 14, 2007
Summary
Serotonin 5-HT(4(a)) receptors are crucial for respiratory network formation and neuromodulation. Their expression and localization change significantly during development, particularly in the pre-Bötzinger complex.
Area of Science:
- Neuroscience
- Developmental Biology
- Respiratory Physiology
Background:
- Serotonin receptors (5-HTRs) regulate breathing and neurotrophic actions during development.
- The 5-HT(4(a)) receptor subtype's role in respiratory network formation is not fully understood.
Purpose of the Study:
- To investigate the developmental expression and localization of the 5-HT(4(a)) receptor in the rat respiratory network.
- To explore the coexpression of 5-HT(4(a)) receptors with mu-opioid receptors and nestin during development.
Main Methods:
- Immunohistochemistry was used to detect 5-HT(4(a)) receptor immunoreactivity (-IR) in rat brain sections.
- Developmental stages studied ranged from embryonic day 14 (E14) to postnatal day 10 (P10).
- Coexpression analysis with mu-opioid receptors and nestin was performed.
Main Results:
- 5-HT(4(a))R-IR was most prominent in the pre-Bötzinger complex (pre-BötC) at E18, primarily in the neuropil.
- A shift to predominantly somatic staining occurred postnatally, with neuropil staining decreasing by P4.
- Strong coexpression of 5-HT(4(a))R and mu-opioid receptors was observed in the pre-BötC; nestin-positive cells appeared later in development.
Conclusions:
- 5-HT(4(a)) receptors play a significant role in both neuromodulation of cellular excitability and the formation of the respiratory network.
- Developmental changes in 5-HT(4(a))R expression suggest a dynamic role in respiratory system maturation.
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