Tyrosine hydroxylase-containing neurons in the supraoptic and paraventricular nuclei of the adult human

Y. W. Li, G. M. Halliday, T. H. Joh, L. B. Geffen, W. W. Blessing

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    40 Citations (Scopus)

    Abstract

    We have studied the distribution of tyrosine hydroxylase-containing neurons in the paraventricular nucleus (PVN) and supraoptic nucleus (SON) of the adult human hypothalamus. Large numbers of these neurons were seen in these hypothalamic nuclei; approximately 40% of all the cells within the SON and PVN were immunoreactive for tyrosine hydroxylase (TH-ir). Most of these cells were magnocellular. Their distribution was compared to that of arginine-vasopressin-immunoreactive (AVP-ir) cells. In the SON a greater proportion of magnocellular TH-ir cells was found caudally compared to AVP-ir cells. In the PVN the magnocellular TH-ir cells were larger in mean diameter compared to AVP-ir cells. In double-immunofluorescence experiments some TH-ir cells contained oxytocin immunoreactivity but none contained AVP-ir. In the adult human a large number of PVN and SON magnocellular cells appear to synthesize a catecholamine. A subclass of these neurons also synthesize oxytocin but most cells are distinct from the classically described neurosecretory neurons.

    Original languageEnglish
    Pages (from-to)75-86
    Number of pages12
    JournalBrain Research
    Volume461
    Issue number1
    DOIs
    Publication statusPublished - 27 Sep 1988

    Keywords

    • Human
    • Hypothalamus
    • Oxytocin
    • Tyrosine hydroxylase
    • Vasopressin

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