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A golgi study on tanycytes and liquor-contacting cells in the posterior hypothalamus of the newt

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Summary

Golgi methods were employed to study neurons and ependymal tanycytes in the posterior hypothalamus of the newt. The tanycytes send a few coarse, spiny or barbed processes towards the pia mater. In the periventricular grey, the neurohistological methods show common neurons, ranging from a multipolar to a plumed organization, and abundant liquor-contacting cells. These cells, possibly neurons, give rise to a process that reaches the cerebro-spinal fluid, and terminates in a spindle-shaped swelling, with a thin thread at its tip. In other cells, the intraventricular endings are bulbous or finger-like. The occurrence of: (1) branches of the liquor-contacting process, running parallel to the infundibular surface; (2) infundibular processes which end at the base or between the ependymal cell bodies; and (3) axons coursing in the same position, all indicates that the subependymal layer is a site for complex intercellular relationships. The significance of liquor-contacting cells and tanycytes is discussed, in view of the possibility that they may represent part of a system for hypothalamic regulation in response to changes in the CSF.

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  1. Institute of Comparative Anatomy, University of Turin, Italy

    A. Fasolo & M. F. Franzoni

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  1. A. Fasolo
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  2. M. F. Franzoni
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Fasolo, A., Franzoni, M.F. A golgi study on tanycytes and liquor-contacting cells in the posterior hypothalamus of the newt. Cell Tissue Res. 154, 151–166 (1974). https://doi.org/10.1007/BF00223161

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  • DOI: https://doi.org/10.1007/BF00223161

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