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Updated: May 21, 2026
09:30
Dual Somatic Recordings from Gonadotropin-Releasing Hormone (GnRH) Neurons Identified by Green Fluorescent Protein (GFP) in Hypothalamic Slices
Published on: February 23, 2010
Gliotransmission by prostaglandin e(2): a prerequisite for GnRH neuronal function?
Jerome Clasadonte1, Ariane Sharif, Marc Baroncini
1Jean-Pierre Aubert Research Center, Inserm, U837, F-59000 Lille, France.
Frontiers in Endocrinology
|June 1, 2012
Summary
Prostaglandin E2 (PGE2), released by glial cells, actively controls gonadotropin-releasing hormone (GnRH) neuronal activity and neurosecretion. PGE2 modulates GnRH release at both the cell body and nerve terminal levels.
Area of Science:
- Neuroendocrinology
- Glial cell biology
- Reproductive neuroscience
Background:
- Prostaglandin E2 (PGE2) is a signaling molecule crucial for the neuroendocrine system.
- Glial cells, including astrocytes and tanycytes, are increasingly recognized for their roles in neuronal regulation.
Purpose of the Study:
- To review the role of PGE2 in modulating gonadotropin-releasing hormone (GnRH) neuroendocrine system.
- To highlight the involvement of glial cells in controlling GnRH neuronal activity and neurosecretion.
Main Methods:
- Literature review of studies on PGE2 and GnRH neuroendocrine system.
- Analysis of research on glial cell signaling pathways, including erbB receptor tyrosine kinase.
- Examination of PGE2's function at the GnRH neurohemal junction in the median eminence.
Main Results:
- PGE2 released by astrocytes regulates GnRH neuronal activity via feedback mechanisms.
- Tanycytes release PGE2 at the median eminence, influencing GnRH nerve terminals.
- PGE2 facilitates GnRH neurohormone diffusion into the pituitary portal blood by retracting tanycyte end-feet.
Conclusions:
- Astrocytes and tanycytes are integral modulators of GnRH neuronal function.
- PGE2 acts as a key mediator in GnRH neuroendocrine regulation at multiple levels.
- Understanding PGE2's role offers insights into reproductive neuroendocrine control.
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