2009
DOI: 10.1213/ane.0b013e3181904571
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Anesthetics Discriminate Between Tonic and Phasic γ-Aminobutyric Acid Receptors on Hippocampal CA1 Neurons

Abstract: Background Anesthesia is produced by a depression of neuronal signaling in the central nervous system (CNS), however, the mechanism(s) of action underlying this depression remain unclear. Recent studies have indicated that anesthetics can enhance inhibition of CNS neurons by increasing current flow through tonic gamma-aminobutyric acid (GABAA) receptor gated chloride channels in their membranes. Enhanced tonic inhibition would contribute to CNS depression produced by anesthetics, but it remains to be determine… Show more

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Cited by 40 publications
(36 citation statements)
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“…Tonic inhibition mediated by extrasynaptic GABA A -R activity is more likely to be involved in anesthetic action than phasic inhibition mediated by synaptic activity (Akk et al, 2004;Bieda and MacIver, 2004;Belelli et al, 2009;Bieda et al, 2009;Kubo et al, 2009;Herd et al, 2014). Extrasynaptic GABA A -R activity partly depends on receptor phosphorylation by various kinases such as protein kinase A and protein kinase C (Comenencia-Ortiz et al, 2014).…”
Section: Prip-1 Is Involved In Propofol-induced Anesthesiamentioning
confidence: 99%
See 1 more Smart Citation
“…Tonic inhibition mediated by extrasynaptic GABA A -R activity is more likely to be involved in anesthetic action than phasic inhibition mediated by synaptic activity (Akk et al, 2004;Bieda and MacIver, 2004;Belelli et al, 2009;Bieda et al, 2009;Kubo et al, 2009;Herd et al, 2014). Extrasynaptic GABA A -R activity partly depends on receptor phosphorylation by various kinases such as protein kinase A and protein kinase C (Comenencia-Ortiz et al, 2014).…”
Section: Prip-1 Is Involved In Propofol-induced Anesthesiamentioning
confidence: 99%
“…Extrasynaptic GABAergic transmission is more likely to contribute to general anesthesia than synaptic transmission (Semyanov et al, 2004;Bieda and MacIver, 2004;Belelli et al, 2009;Bieda et al, 2009;Kubo et al, 2009;Herd et al, 2014) . The phosphorylation state of GABA A -R is thought to determine its localization and activity in the synaptic or extrasynaptic membrane (Terunuma et al, 2004;Abramian et al, 2010;Comenencia-Ortiz et al, 2014).…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, recent study indicates that general anesthetics discriminate between synaptic and tonic GABA A Rs (Bieda et al, 2009). Extrasynaptic GABA A Rs are activated by low concentrations of GABA and as anesthetics increase the receptor affinity (Orser et al, 1998), agonist binding and current amplitude may increase (Fig.…”
Section: Pharmacological Action In the Central Nervous Systemmentioning
confidence: 99%
“…19 The protocol adhered to the best-practice guidelines of the Society for Neuroscience, and the "Guide for the Care …”
Section: Brain Slice Recordingsmentioning
confidence: 99%