Changes in plasma melatonin indicated that an initial increase in noradrenaline (NA) transmission produced by DMI was ... Plasma melatonin was used to determine overall beta-adrenergic transmission through pineal neuro-effector junctions during ... Plasma melatonin during desmethylimipramine treatment: evidence for changes in noradrenergic transmission. Cowen PJ., Green AR ... Changes in plasma melatonin indicated that an initial increase in noradrenaline (NA) transmission produced by DMI was ...