Dynamic Regulation of the GABAA Receptor Function by Redox Mechanisms
Daniel J Calvo1, Andrea N Beltrán González2
1Laboratorio de Neurobiología Celular y Molecular, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular ¨Dr. Héctor N. Torres¨ (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina (D.J.C., A.N.B.G.) danieljcalvo@gmail.com.
Molecular Pharmacology
|July 22, 2016
Summary
Redox agents regulate neurotransmission by modulating GABA receptors. This review highlights how these compounds, present in the brain, influence neuronal function under normal and stressed conditions, suggesting a role in homeostasis.
Area of Science:
- Neuroscience
- Cellular Biology
- Biochemistry
Background:
- Oxidizing and reducing agents are integral to cellular metabolism and signaling.
- Fast inhibitory neurotransmission in the nervous system relies on GABA receptors.
- Redox compounds influence neuronal GABAA receptor function via presynaptic and postsynaptic mechanisms.
Purpose of the Study:
- To review experimental data on the modulatory effects of redox agents on GABAA receptors.
- To explore the role of endogenous redox compounds in regulating neuronal activity.
- To understand the potential homeostatic function of redox signaling in the nervous system.
Main Methods:
- In vitro studies examining the effects of various redox compounds.
- Analysis of data on native and recombinant GABAA receptor subtypes.
- Review of literature on physiological and oxidative stress conditions.
Main Results:
- Diverse redox compounds, including reactive oxygen and nitrogen species, modulate GABAA receptor-mediated responses.
- Endogenously generated redox agents (e.g., H2O2, NO, glutathione) exhibit potentiating or inhibiting actions.
- Effects are observed on both phasic and tonic GABAA receptor activity.
Conclusions:
- Redox signaling is a key regulator of GABAA receptor function.
- This signaling pathway may act as a homeostatic mechanism in the nervous system.
- Understanding redox modulation of GABAA receptors is crucial for physiological and pathological conditions.
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