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  • Title: Immunohistochemical localization of serotonin transporter in normal and colchicine treated rat brain.
    Author: Yamamoto H, Fujimiya M, Shirai Y, Nakashita M, Oyasu M, Saito N.
    Journal: Neurosci Res; 1998 Dec; 32(4):305-12. PubMed ID: 9950057.
    Abstract:
    Distribution of serotonin transporter (SET) was examined immunohistochemically in the rat brain using two specific polyclonal antibodies raised against oligopeptides corresponding with 15 amino acids of carboxyl terminus and 14 amino acids of amino terminus of rat SET. The distribution and density of SET immunoreactive varicose fibers were quite similar to those of serotonin immunoreactive fibers, however no neuronal cell bodies in the brainstem raphe nuclei was stained in normal rat brain. Electron microscopic study showed that SET immunoreactivity was predominantly localized in the presynaptic terminals. After intraventricular infusion of colchicine, neuronal perikarya of dorsal, median, and pontine raphe nuclei became visible. These results suggest that SET is likely present at the synaptic terminals of serotonergic neurons and such localization may be in good agreement with its pharmacological action which includes reuptake of serotonin at presynaptic nerve terminals.
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