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The origin of the vasopressinergic and oxytocinergic fibres of the external region of the median eminence of the rat hypophysis

The origin of the vasopressinergic and oxytocinergic fibres of the external region of the median... The origin of the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence was investigated by means of hypothalamic lesions, adrenalectomy and immunocytochemistry. The results obtained in bilaterally adrenalectomized animals with complete, or incomplete, destruction of the suprachiasmatic nuclei showed that, at least, the great majority of the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence do not originate from the suprachiasmatic nuclei. From the observations obtained in bilaterally adrenalectomized animals with total or subtotal destruction of both paraventricular hypothalamic nuclei, it appears that the paraventricular nuclei must be the origin of (nearly) all the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence. The results strongly suggest that both types of fibres originate from all parts of the paraventricular nuclei. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cell and Tissue Research Springer Journals

The origin of the vasopressinergic and oxytocinergic fibres of the external region of the median eminence of the rat hypophysis

Cell and Tissue Research , Volume 180 (4) – Jun 1, 1977

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References (19)

Publisher
Springer Journals
Copyright
Copyright © 1977 by Springer-Verlag
Subject
Biomedicine; Neurosciences; Endocrinology; Neurology; Cell Biology
ISSN
0302-766X
eISSN
1432-0878
DOI
10.1007/BF00220167
Publisher site
See Article on Publisher Site

Abstract

The origin of the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence was investigated by means of hypothalamic lesions, adrenalectomy and immunocytochemistry. The results obtained in bilaterally adrenalectomized animals with complete, or incomplete, destruction of the suprachiasmatic nuclei showed that, at least, the great majority of the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence do not originate from the suprachiasmatic nuclei. From the observations obtained in bilaterally adrenalectomized animals with total or subtotal destruction of both paraventricular hypothalamic nuclei, it appears that the paraventricular nuclei must be the origin of (nearly) all the vasopressinergic and oxytocinergic nerve fibres of the external region of the rat median eminence. The results strongly suggest that both types of fibres originate from all parts of the paraventricular nuclei.

Journal

Cell and Tissue ResearchSpringer Journals

Published: Jun 1, 1977

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