Receptors, Purinergic P2Receptors, Purinergic P2X7CaffeinePurinergic P2X Receptor AntagonistsPurinergic P2X Receptor AgonistsReceptors, Purinergic P2XReceptors, Purinergic P2X3Receptors, Purinergic P2Y2Receptors, Purinergic P2X4Receptors, Purinergic P2Y1Purinergic P2 Receptor AntagonistsPurinergic P2Y Receptor AgonistsReceptors, PurinergicReceptors, Purinergic P2YPurinergic P2 Receptor AgonistsReceptors, Purinergic P2X2Purinergic AntagonistsPurinergic AgonistsAdenosine TriphosphateReceptors, Purinergic P2Y12Receptors, Purinergic P2X5Receptors, Purinergic P2X1Uridine TriphosphateSuraminPyridoxal PhosphateCalciumPurinergic P2Y Receptor AntagonistsCalcium SignalingReceptors, Purinergic P1Central Nervous System StimulantsPurinergic AgentsApyraseAdenosine DiphosphateTheobromineCells, CulturedPurinergic P1 Receptor AgonistsPurinergic P1 Receptor AntagonistsCoffeeRats, Sprague-DawleySignal TransductionPurinesInterleukin-1betaAdenosineRats, WistarMice, Inbred C57BLNeuronsMice, KnockoutReceptor, Adenosine A1Cell LineMuscle ContractionRyanodineReceptor, Adenosine A2APhosphodiesterase InhibitorsCytochrome P-450 CYP1A2Electric StimulationUrinary BladderMuscle, SmoothDose-Response Relationship, DrugMembrane PotentialsProcaineThionucleotidesAdenosine A1 Receptor AntagonistsVas DeferensAdenosine A2 Receptor AntagonistsFura-2Synaptic TransmissionUridine DiphosphateGuinea PigsCarbenoxolonePatch-Clamp TechniquesCalcium Channels5'-NucleotidasePrazosinAdenine NucleotidesNorepinephrineSarcoplasmic ReticulumExtracellular SpaceRyanodine Receptor Calcium Release ChannelBeveragesNeurotransmitter AgentsThapsigarginTime FactorsType C PhospholipasesPhenylisopropyladenosineNucleotidesInositol 1,4,5-TrisphosphateElectrophysiologyHypotonic SolutionsDrug InteractionsApaminCyclic AMPEphedrinePaulliniaRosaniline DyesConnexinsAdenosine A1 Receptor Agonists