Noradrenergic and Serotonergic Dysfunction in the Affective Disorders
The catecholaminergic system1 and the indoleaminergic system2 have been postulated to be abnormal in the affective disorders. Considerable support exists for at least some disturbance in these systems in a substantial proportion of affective disorder patients. The exact character of these abnormalities remains to be determined. However, abnormalities in noradrenergic metabolites in body fluids3 as well as abnormalities in adrenergic receptor responsiveness4 have been found in depressed patients. Decreased concentrations of the serotonin metabolite 5-hydroxyindoleacetic acid (5-HIAA)5 and prolactin responses to serotonergic challenges6,7 have also been demonstrated in patients with major depressive disorder.
KeywordsDepression Serotonin Noradrenaline Catecholamine Prolactin
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