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Updated: Jun 8, 2026

Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing

Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing

Published on: October 25, 2019

Serotonin receptor 5-HT5A in rat hippocampus decrease by leptin treatment.

Guadalupe García-Alcocer¹, Angelina Rodríguez, Paulina Moreno-Layseca

¹Facultad de Química, Universidad Autónoma de Querétaro, Centro Universitario, Querétaro 76010, Mexico. leguga@email.com

Neuroscience Letters

|September 25, 2010

Summary

This summary is machine-generated.

Leptin and serotonin co-treatment did not alter 5-HT(5A) receptor gene expression in rat hippocampus. However, combined leptin and serotonin administration significantly reduced 5-HT(5A) serotonin receptor protein levels in the dentate gyrus.

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Published on: June 27, 2014

Area of Science:

Neuroscience
Endocrinology
Molecular Biology

Background:

5-Hydroxytryptamine (5-HT) receptors are crucial for numerous physiological functions.
Leptin, an adipocyte hormone, influences appetite and hippocampal neurogenesis.
The role of 5-HT(5A) receptors in the hippocampus and their modulation by leptin remains underexplored.

Purpose of the Study:

To investigate the impact of leptin on 5-HT(5A) receptor expression in the rat hippocampus.
To examine the combined effects of leptin and serotonin on 5-HT(5A) receptor distribution.

Main Methods:

Quantitative reverse transcription polymerase chain reaction (qRT-PCR) for gene expression analysis.
Immunohistochemistry to visualize 5-HT(5A) receptor protein distribution.
Treatment groups included control, leptin, serotonin, and leptin + serotonin.

Main Results:

No significant changes in 5-HT(5A) receptor gene expression were observed in any treatment group.
A significant decrease in 5-HT(5A) serotonin receptor immunostaining was found in the dentate gyrus of rats treated with both leptin and serotonin.

Conclusions:

Leptin and serotonin co-administration affects 5-HT(5A) receptor protein levels, not gene expression, in the hippocampus.
The findings suggest a post-transcriptional regulatory mechanism for 5-HT(5A) receptors in the dentate gyrus.