Lew M J, White T D
Baker Medical Research Institute, Prahran, Victoria, Australia.
Br J Pharmacol. 1987 Oct;92(2):349-55. doi: 10.1111/j.1476-5381.1987.tb11330.x.
1 Vas deferens from guinea-pig was stimulated with a suction electrode and both contractions and release of endogenous ATP monitored 2 Release of ATP was tetrodotoxin-sensitive and increased when the number of stimuli was increased. 3 Release of ATP was not due to contraction of the muscle and persisted following block of contractions with prazosin and alpha, beta-methylene ATP. 4 These results indicate that stimulation of the sympathetic nerves in the vas deferens releases endogenous ATP presynaptically, supporting a cotransmitter function for ATP with noradrenaline.
1 用吸力电极刺激豚鼠的输精管,并监测收缩情况以及内源性ATP的释放。2 ATP的释放对河豚毒素敏感,且当刺激次数增加时会增加。3 ATP的释放并非由于肌肉收缩所致,在用哌唑嗪和α,β-亚甲基ATP阻断收缩后仍持续存在。4 这些结果表明,刺激输精管中的交感神经会在突触前释放内源性ATP,支持ATP与去甲肾上腺素具有共同递质功能。