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  • Title: Localization and characterization of [3H]desmethylimipramine binding sites in rat brain by quantitative autoradiography.
    Author: Biegon A, Rainbow TC.
    Journal: J Neurosci; 1983 May; 3(5):1069-76. PubMed ID: 6302234.
    Abstract:
    The high affinity binding sites for the antidepressant desmethlyimipramine (DMI) have been localized in rat brain by quantitative autoradiography. There are high concentrations of binding sites in the locus ceruleus, the anterior ventral thalamus, the ventral portion of the bed nucleus of the stria terminalis, the paraventricular and the dorsomedial nuclei of the hypothalamus. The distribution of DMI binding sites is in striking accord with the distribution of norepinephrine terminals. Pretreatment of rats with the neurotoxin 6-hydroxydopamine, which causes a selective degeneration of catecholamine terminals, results in 60 to 90% decrease in DMI binding. These data support the idea that high affinity binding sites for DMI are located on presynaptic noradrenergic terminals.
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