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  • Title: Vasopressin in the brain of the golden hamster: the distribution of vasopressin binding sites and of immunoreactivity to the vasopressin-related glycopeptide.
    Author: Dubois-Dauphin M, Pevet P, Tribollet E, Dreifuss JJ.
    Journal: J Comp Neurol; 1990 Oct 22; 300(4):535-48. PubMed ID: 2148751.
    Abstract:
    Using in vitro light microscopic autoradiography and immunocytochemistry, the distribution of vasopressin binding sites and that of the vasopressin-related glycopeptide are described in the brain of golden hamster (Mesocricetus auratus). Vasopressin binding sites and immunoreactive axons were observed in the suprachiasmatic nucleus, in the anterior hypothalamus/median preoptic area, in the medial preoptic nucleus, in the bed nucleus of the stria terminalis, in the habenular complex, in the thalamic paraventricular nucleus, and in the nucleus of the solitary tract. In addition we observed binding sites in regions where no immunoreactivity could be evidenced: the lateral septal nucleus, the central amygdaloid nucleus, the subiculum, the dentate gyrus, the anterodorsal and anteroventral thalamic nuclei, the superior colliculus, the vestibular nuclei, and in the prepositus hypoglossal nucleus. In the golden hamster, exogenous vasopressin excites single neurones located in the suprachiasmatic nucleus and induces flank-marking behavior when microinjected into the preoptic area. Our results provide a morphological basis for similar effects exerted by endogenous vasopressin. A comparison of the present data with those previously described in the rat reveals marked species differences in the brain distribution of vasopressin and of its binding sites.
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