title: Behavioural evidence for an interdependence between GABAA receptors and beta 2-adrenoceptors.
abstract: The possibility of a functional interdependence between central GABAA receptors and beta 2-adrenoceptors has been investigated using the ability of both types of agonist to potentiate the tic (head-twitch) response to 5-methoxy-N,N-dimethyltryptamine in the mouse. At a dose which selectively antagonised beta 1- but not beta 2-adrenoceptors, ICI 118,551 abolished the effects of single doses of muscimol, diazepam and pentobarbitone. Conversely, bicuculline abolished the potentiation caused by the beta 2-adrenoceptor agonist procaterol. Thus there is preliminary evidence that these two receptor types do show mutual interdependence.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D001640:Bicuculline / Q000494:pharmacology; D008297:Male; D008732:Methoxydimethyltryptamines / Q000494:pharmacology; D051379:Mice; D011412:Propanolamines / Q000494:pharmacology; D011943:Receptors, Adrenergic, beta / Q000502:physiology*; D011963:Receptors, GABA-A / Q000502:physiology*
chemical_list: D008732:Methoxydimethyltryptamines; D011412:Propanolamines; D011943:Receptors, Adrenergic, beta; D011963:Receptors, GABA-A; C026777:ICI 118551; D001640:Bicuculline