Eugenol has sedative, antioxidant, anti-inflammatory, and analgesic effects, but also serves as an irritant through the regulation of a different set of ion channels. Activation of gamma aminobutyric acid (GABA) receptors on sensory neurons leads to the stabilization of neuronal excitability but contributes to formalin-induced inflammatory pain. In this study, we examined the effect of eugenol ...

Diazepam is used clinically for its myorelaxant, anxiolytic, sedative, and anticonvulsant properties. Although the anxiolytic action is mediated by a2 g-aminobutyric acid A (GABAA) receptors, the sedative action and in part the anticonvulsant action are mediated by a1 GABAA receptors. To identify the GABAA receptor subtypes mediating the action of diazepam on muscle tone, we have assessed the m...

Both volatile and intravenous general anesthetics allosterically enhance gamma-aminobutyric acid (GABA)-evoked chloride currents at the GABA type A (GABAA) receptor. Recent work has revealed that two specific amino acid residues within transmembrane domain (TM)2 and TM3 are necessary for positive modulation of GABAA and glycine receptors by the volatile anesthetic enflurane. We now report that ...

background: estradiol and progesterone as well as hippocampal gabaa receptors are believed to play a role in the modulation of pain. the aim of present study was to investigate the effect of intrahippocampal injections of gabaa receptor agonist (muscimol) and gabaa receptor antagonist (picrotoxin) on pain sensitivity during estrous cycle. methods: pain sensitivity was evaluated in rats by forma...