The potentiating influence of imipramine on ganglionic effects of catecholamines

K. K, Irena GawX, Renata K
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引用次数: 11

Abstract

The actions of imipramine on the inhibitory effects of the catecholamines norepinephrine, epinephrine and dopamine on transmission in the superior cervical ganglion of the cat were studied, in order to observe its influence on adrenergic sites at the synaptic level. Lower doses of imipramine potentiated only the inhibitory effects of norepinephrine, although with higher doses the potentiation of epinephrine action was also noted. The effects of dopamine were not changed significantly. Imipramine was found to depress ganglionic transmission, and it is suggested that it increases the amount of free norepinephrine acting on neurones involved in cholinergic transmission.

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丙咪嗪对儿茶酚胺神经节效应的增强作用
研究丙咪嗪对儿茶酚胺、去甲肾上腺素、肾上腺素和多巴胺在猫颈上神经节传导的抑制作用,观察丙咪嗪对突触水平肾上腺素能部位的影响。低剂量丙咪嗪只增强了去甲肾上腺素的抑制作用,但高剂量丙咪嗪也会增强肾上腺素的作用。多巴胺的作用没有明显改变。丙咪嗪可抑制神经节传导,提示其可增加游离去甲肾上腺素作用于参与胆碱能传导的神经元的量。
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