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  • Title: Co-existence of CRF and vasopressin immunoreactivity in parvocellular paraventricular neurons of rat hypothalamus.
    Author: Piekut DT, Joseph SA.
    Journal: Peptides; 1986; 7(5):891-8. PubMed ID: 3540910.
    Abstract:
    New dual immunocytochemical staining procedures were used in the same tissue section to elucidate the distribution and co-existence of CRF and vasopressin in parvocellular neuronal perikarya in the paraventricular nucleus (PVN) of rat hypothalamus. CRF immunostained cells were for the most part concentrated in the medial parvocellular component of PVN. Few vasopressin-immunoreactive (ir) neurons were seen in this area in the normal and colchicine-treated animals. Vasopressin-containing neurons predominated in the magnocellular component of PVN. In the adrenalectomized and adrenalectomized-colchicine-treated animals, a dense accumulation of vasopressin-ir cells were observed in the medial parvocellular area of PVN; this region is normally vasopressin-ir poor and CRF-ir rich. The vasopressin immunostained cells appeared to have an anatomical distribution similar to that seen for CRF-containing cell bodies. Results of this study unequivocally establish the co-existence of vasopressin and CRF in the same parvocellular perikarya of PVN following pertubation of the pituitary-adrenal axis.
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