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3-Carene, a Phytoncide from Pine Tree Has a Sleep-enhancing Effect by Targeting the GABA(A)-benzodiazepine Receptors
Experimental Neurobiology ; : 593-601, 2019.
Article Dans Anglais | WPRIM | ID: wpr-763787
ABSTRACT
3-Carene, a bicyclic monoterpene, is one of the major components of the pine tree essential oils. It has been reported that, in addition to its known properties as a phytoncide, 3-carene has anti-inflammatory, antimicrobial, and anxiolytic effects. We have previously demonstrated that α-pinene, the major component of pine tree, has a hypnotic effect through GABA(A)-benzodiazepine (BZD) receptors. However, a hypnotic effect of 3-carene has not been studied yet. Here, we report that oral administration of 3-carene increases the sleep duration and reduces sleep latency in pentobarbital-induced sleep test. 3-Carene potentiates the GABA(A) receptor-mediated synaptic responses by prolonging the decay time constant of inhibitory synaptic responses. These enhancing effects of 3-carene are reproduced by zolpidem, a modulator for GABA(A)-BZD receptor, and fully inhibited by flumazenil, an antagonist for GABA(A)-BZD receptor. The molecular docking of 3-carene to the BZD site of GABA(A) protein structure, suggests that 3-carene binds to the BZD site of α1 and ϒ2 subunits of GABA(A)-BZD receptor. These results indicate that, similar to α-pinene, 3-carene shows a sleep-enhancing effect by acting as a positive modulator for GABA(A)-BZD receptor.
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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Anxiolytiques / Huile essentielle / Administration par voie orale / Flumazénil / Pinus / Hypnotiques et sédatifs langue: Anglais Texte intégral: Experimental Neurobiology Année: 2019 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Anxiolytiques / Huile essentielle / Administration par voie orale / Flumazénil / Pinus / Hypnotiques et sédatifs langue: Anglais Texte intégral: Experimental Neurobiology Année: 2019 Type: Article