Cowen P J, Green A R, Grahame-Smith D G, Braddock L E
Br J Clin Pharmacol. 1985 Jun;19(6):799-805. doi: 10.1111/j.1365-2125.1985.tb02717.x.
Plasma melatonin was used to determine overall beta-adrenergic transmission through pineal neuro-effector junctions during desmethylimipramine (DMI) treatment in 10 normal subjects. Changes in plasma melatonin indicated that an initial increase in noradrenaline (NA) transmission produced by DMI was counteracted by adaptive changes which restored transmission to normal by the third week of treatment. A 'rebound' increase in NA transmission was seen on DMI withdrawal. The results suggest that the adaptive changes which occur in NA synapses during DMI treatment do not, as has been proposed, decrease NA transmission below normal levels, but instead restore homeostasis in the presence of the drug.
在10名正常受试者接受去甲丙咪嗪(DMI)治疗期间,血浆褪黑素被用于测定通过松果体神经效应器连接的整体β-肾上腺素能传递。血浆褪黑素的变化表明,DMI引起的去甲肾上腺素(NA)传递最初增加被适应性变化抵消,这些适应性变化在治疗第三周时将传递恢复到正常水平。在停用DMI时观察到NA传递出现“反跳”增加。结果表明,DMI治疗期间NA突触中发生的适应性变化并非如所提出的那样将NA传递降低至正常水平以下,而是在药物存在的情况下恢复体内平衡。