Summary
Scanning electron microscopy of the ventricular surface of the pars ventralis of the tuber cinereum of the frog Rana temporaria shows that it can be divided in (1) a dorsolateral area, characterized by the presence of very numerous large, solid, bulbous protrusions, (2) a medial area, where the large bulbous structures are completely absent and which is diffusely covered with very numerous cilia, (3) a transitional area located between the two other regions.
The large bulbs, shown by scanning electron microscopy, correspond with the end-bulbs of the thick ventricular dendrites of nerve cells revealed by transmission electron microscopy. At least many of these intra-ventricular bulbs are dendritic endings of peptidergic neurosecretory neurons, which have been tentatively identified as adenohypophysiotropic neurohormone producing neurons (Dierickx et al., 1972, 1973 a, 1973 b). The structural features of the dendritic endings plead in favour of a possible receptive role.
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References
Diepen, R.: Der Hypothalamus. In: Handbuch der mikroskopischen Anatomie des Menschen, Bd. VI, Teil 1. Berlin-Göttingen-Heidelberg: Springer 1962
Dierickx, K.: The dendrites of the preoptic neurosecretory nucleus of Rana temporaria and the osmoreceptors. Naturwissenschaften 17, 405–406 (1962)
Dierickx, K.: The dendrites of the preoptic neurosecretory nucleus of Rana temporaria and the osmoreceptors. Arch. int. Pharmacodyn. 140, 708–725 (1962)
Dierickx, K.: Identification of adenohypophysiotropic neurohormone producing neurosecretory cells in Rana temporaria. In: Neurosecretion—The final neuroendocrine pathway. VI Int. symp. on neurosecretion, London 1973 (eds. F. Knowles and L. Vollrath), p. 170–181. Berlin-Heidelberg-New York: Springer 1974
Dierickx, K., Druyts, A., Vandenberghe, M. P., Goossens, N.: Identification of adenohypophysiotropic neurohormone producing neurosecretory cells in Rana temporaria. I. Ultrastructural evidence for the presence of neurosecretory cells in the tuber cinereum. Z. Zellforsch. 134, 459–504 (1972)
Dierickx, K., Goossens, N., Vandenberghe, M. P.: Identification of adenohypophysiotropic neurohormone producing neurosecretory cells in Rana temporaria. III. The tuberohypophysial monoaminergic fibres and the role of the tubero-hypophysial neurosecretory system. Z. Zellforsch. 143, 93–106 (1973b)
Dierickx, K., Vandenberghe, M. P., Goossens, N.: Identification of adenohypophysiotropic neurohormone producing neurosecretory cells in Rana temporaria. II. Identification, in the median eminence, of the terminal arborizations of axons of the tubero-hypophysial neurosecretory system. Z. Zellforsch. 142, 479–513 (1973a)
Gaupp, E.: Anatomie des Frosches. Braunschweig: Vieweg & Sohn 1899
Hökfelt, T., Fuxe, K.: On the morphology and the neuroendocrine role of the hypothalamic catecholamine neurons. In: Brain-endocrine interaction. Median Eminence: Structure and Function (eds. K. M. Knigge, D. E. Scott, A. Weindl) p. 181–223. Basel: Kaeger 1972
Oordt, Van, P. G. W. J., Goos, H. J. Th., Peute, J., Terlou, M.: Structural and functional aspects of two types of Gomori-negative neurosecretory centres in the caudal hypothalamus of amphibia. In: Neurosecretion—The final neuroendocrine pathway. VI Int. symp. on neurosecretion, London 1973 (eds. F. Knowles and L. Vollrath), p. 182–192. Berlin-Heidelberg-New York: Springer 1974
Pehlemann, F.-W.: Zilientragende Nervenendigungen im Bereich des dritten Ventrikels von Anuren. In: Zirkumventrikuläre Organe und Liquor. Bericht über das Symposium in Schloß Reinhardsbrunn vom 13. bis 16. Mai 1968 (Hrsg. G. Sterba), 135–138. Jena: VEB Gustav Fischer Verlag 1969
Vigh, B., Vigh-Teichmann, I.: Comparative ultrastructure of the cerebrospinal fluid-contacting neurons. Int. Rev. Cytol. 35, 189–251 (1973)
Waele, G. De, Dierickx, K., Goossens, N.: Scanning electron microscopy of the wall of the third ventricle of the brain of Rana temporaria. I. Scanning electron microscopy of the ventricular surface of the para ventricular organ. Cell Tiss. Res. 154, 511–518 (1974)
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The scanning electron microscopy was done in the “Centrum voor Elektronenmikroskopie” of the University of Gent (Head: Prof. Dr. P. Lagasse).
This work was supported by a grant from the Belgian Nationaal Fonds voor Wetenschappelijk Onderzoek.
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Dierickx, K., De Waele, G. Scanning electron microscopy of the wall of the third ventricle of the brain of Rana temporaria . Cell Tissue Res. 159, 81–90 (1975). https://doi.org/10.1007/BF00231997
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DOI: https://doi.org/10.1007/BF00231997