title: Differential effects of calcium channel blockers on the responses of the rat vas deferens to intramural nerve stimulation and exogenous drugs.
abstract: The calcium channel blockers, nifedipine and verapamil, have separate effects on the phases of nerve-induced twitches which are not reflected by their actions on the responses to exogenous NA, ATP and the stable ATP analogue, alpha, beta-mATP. This implies that different calcium channels are used according to the manner of stimulation.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D000818:Animals; D002121:Calcium Channel Blockers / Q000494:pharmacology*; D004285:Dogs; D004822:Epididymis; D066298:In Vitro Techniques; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000502:physiology; D009638:Norepinephrine / Q000494:pharmacology; D011224:Prazosin / Q000494:pharmacology; D014649:Vas Deferens / Q000187:drug effects / Q000294:innervation / Q000502:physiology*
chemical_list: D002121:Calcium Channel Blockers; D000255:Adenosine Triphosphate; D009638:Norepinephrine; D011224:Prazosin