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  • Title: Immunoelectron microscopic demonstration of oxytocin and vasopressin in pituicytes and in nerve terminals forming synaptoid contacts with pituicytes in the rat neural lobe.
    Author: Boersma CJ, Sonnemans MA, Van Leeuwen FW.
    Journal: Brain Res; 1993 May 14; 611(1):117-29. PubMed ID: 8518939.
    Abstract:
    A pre-embedding immunoelectron microscopic technique was used to obtain morphological evidence for a role of oxytocin and vasopressin in the regulation of their own or each others release from the neural lobe. No synaptoid contacts of oxytocin- or vasopressin-containing axons with other neuronal structures were observed. However, synaptoid contacts of oxytocin- and vasopressin-containing nerve terminals and Herring bodies with pituicytes were frequently observed. These findings suggest that the pituicyte may participate in auto- and/or cross-regulation of oxytocin and vasopressin release. Moreover, oxytocin and vasopressin precursor-derived peptides were found in the cytoplasm of some pituicytes, an unexpected finding that will be discussed.
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