These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Cytochemical ultrastructural study of the glycoproteins in the rat hypothalamo-post-pituitary complex].
    Author: Tasso F, Rua S.
    Journal: Arch Anat Microsc Morphol Exp; 1975; 64(3):247-60. PubMed ID: 1232920.
    Abstract:
    The results obtained with various methods applied to the cytochemical detection of carbohydrates at an ultrastructural level, confirm the existence of glycoproteins in neurosecretory material in the neurohypophysis as well as in the hypothalamic magnocellular nuclei. This glycoproteic component, however, is not present in all the secretory granules and, according to their cytochemical behaviour, it is possible to distinguish two types of neurosecretory fibres: one where all the granules respond negatively; the other where most of the granules are reactive. The existence of two types of neurons corresponding to these two fibres cannot yet be asserted, but seems very likely, perhaps connected with the hormonal duality of the magnocellular nuclei. The reactions are also positive on the Golgi apparatus, in accordance with its function in glycoprotein synthesis. But the difference of reactivity between the Golgi cisternae and the neurosecretory product suggests that glycoprotein synthesis is still going on in the neurosecretory granules outside the Golgi area.
    [Abstract] [Full Text] [Related] [New Search]