Identification,in the external region of the rat median eminence,of separate neurophysin-vasopressin and neurophysin-oxytocin containing nerve fibres |
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| Authors: | ProfDr K Dierickx F Vandesande J de Mey |
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| Institution: | (1) Department of Embryology and Comparative Histology, Rijksuniversiteit, Gent, Belgium;(2) Laboratorium voor Embryologie en Vergelijkende Histologie, Godshuizenlaan 4, B-9000 Rijksuniversiteit, Gent, Belgium |
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| Abstract: | Summary Immuno-enzyme cytochemical investigations, using single and double staining techniques, showed that the external region of the rat median eminence contains separate neurophysin-vasopressin fibres and neurophysinoxytocin fibres. These neurophysin-hormone containing nerve fibres are influenced by bilateral adrenalectomy and by colchicine treatment. The external region of the median eminence of the homozygous Brattleboro rat contains neurophysin-oxytocin fibres. It does not contain immuno-reactive neurophysin-vasopressin fibres. Bilateral adrenalectomy also influences the neurophysin-vasopressin containing neurons of the suprachiasmatic nuclei. In the neurons of the parvicellular part of the rat hypothalamic paraventricular nuclei, staining for vasopressin and for oxytocin is completely absent. |
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| Keywords: | External region of median eminence (rat) Neurophysinvasopressin and neurophysin oxytocin fibres Suprachiasmatic nuclei Paraventricular nuclei (parvicellular part) Immunoenzyme cytochemistry |
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