Using a combination of electron microscopy autoradiography and immunocytochemistry, the connections between serotoninergic and axons and somatostatin neurons of the anterior periventricular nucleus of the rat hypothalamus were examined. The serotoninergic elements were identified after selective uptake of tritiated serotonin and the somatostatin neurons with immunocytochemistry. Synaptic connections between labeled serotoninergic nerve endings and somatostatin-immunoreactive neurons were observed. This finding provides morphological evidence for a direct influence of serotoninergic elements on somatostatin neurons of the anterior periventricular nucleus projecting to the median eminence of the hypothalamus.
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Yaroslavl State Med Univ, Dept Human Anat, Yaroslavl, RussiaYaroslavl State Med Univ, Dept Human Anat, Yaroslavl, Russia
Emanuilov, Andrey I.
Budnik, Antonina F.
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Kabardino Balkarian State Univ, Dept Normal & Pathol Anat, Nalchik, RussiaYaroslavl State Med Univ, Dept Human Anat, Yaroslavl, Russia
Budnik, Antonina F.
Masliukov, Petr M.
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Yaroslavl State Med Univ, Dept Human Anat, Yaroslavl, Russia
Yaroslavl State Med Univ, Dept Normal Physiol & Biophys, Revoliucionnaya 5, Yaroslavl 150000, RussiaYaroslavl State Med Univ, Dept Human Anat, Yaroslavl, Russia