Dopamine AgonistsGABA AgonistsDose-Response Relationship, DrugPurinergic P1 Receptor AgonistsMuscarinic AgonistsNicotinic AgonistsTreatment OutcomeAdrenergic AgonistsAdrenergic alpha-2 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsSerotonin 5-HT1 Receptor AgonistsHistamine AgonistsAdrenergic beta-AgonistsPurinergic P2 Receptor AgonistsGABA-A Receptor AgonistsCholinergic AgonistsRats, Sprague-DawleyAdenosine A1 Receptor AgonistsAdrenergic alpha-AgonistsAdrenergic alpha-1 Receptor AgonistsExcitatory Amino Acid AgonistsDouble-Blind MethodReceptors, Opioid, muCannabinoid Receptor AgonistsTime FactorsAdrenergic beta-3 Receptor AgonistsAdenosine A3 Receptor AgonistsReceptors, Opioid, kappaLigandsReceptors, Opioid, deltaGABA-B Receptor AgonistsCells, CulturedRadioligand AssaySerotonin 5-HT4 Receptor AgonistsPiperidinesReceptors, Dopamine D2Drug Therapy, CombinationRats, WistarDisease Models, AnimalSignal TransductionCyclic AMPEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Mice, Inbred C57BLSerotonin AntagonistsCalciumAdenosineCarbacholIsoproterenolCell LineReceptors, OpioidCHO CellsDrug InteractionsDrug Administration SchedulePurinergic AgonistsCricetinaeAdrenergic beta-1 Receptor AgonistsBinding, CompetitiveReceptors, Adrenergic, beta-2PyridinesPhenethylaminesGuinea PigsBenzazepinesCannabinoidsCalcium Channel AgonistsPyrrolidinesClonidinePiperazinesNarcotic Antagonists2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineParasympathomimeticsAdministration, OralIndolesDrug CombinationsTetrahydronaphthalenesGuanosine 5'-O-(3-Thiotriphosphate)Receptors, Adrenergic, betaReceptors, Purinergic P1AlbuterolEthanolaminesNaphthalenesReceptors, G-Protein-CoupledReceptors, MuscarinicQuinpiroleImidazolesReceptors, NicotinicErgolinesPPAR gammaReceptors, Dopamine D1Enkephalin, D-Penicillamine (2,5)-NaltrexoneDrug SynergismReceptors, Adrenergic, alpha-2Antineoplastic AgentsSerotoninThiazolidinedionesKineticsOligopeptidesNeuronsStructure-Activity RelationshipGonadotropin-Releasing Hormone