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  • 1
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1106
    Keywords: Steroid receptor ; CRF ; Neurotensin ; Enkephalin ; CCK ; PHI ; VIP ; Somatostatin ; TRH ; Dopamine ; Immunohistochemistry ; Arcuate nucleus ; Hormones ; Neurosecretion ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The paraventricular nucleus (PVN) of male albino rats was analyzed for the presence of glucocorticoid receptor-like immunoreactivity (GR-LI) in neuropeptide containing neurons. Using immunohistochemistry, coronal sections trough the entire PVN were double-stained with a mouse monoclonal antibody against GR and one of the following antisera: rabbit antiserum to corticotropin releasing factor (CRF), neurotensin (NT), enkephalin (ENK), cholecystokinin (CCK), thyrotropin releasing hormone (TRH), galanin (GAL), peptide histidine isoleucine (PHI), vasoactive intestinal polypeptide (VIP), somatostatin (SOM) or tyrosine hydroxylase (TH). For comparison the occurrence of GR-LI in NT-, SOM-, NPY- or TH-positive neurons of the arcuate nucleus was also studied. Our results indicate that GR-LI is present in the parvocellular part of the PVN but not in its magnocellular portion. Virtually every parvocellular neuron in the PVN containing one of the above mentioned peptides was also positive for GR, with the exception of SOM neurons, of which only about two thirds showed detectable levels of GR-LI. All TH-positive, presumably dopamine neurons in the PVN were GR-positive. In the arcuate nucleus all TH- and NPY-positive neurons as well as a large proportion of the SOM- and NT-immunoreactive neurons contained GR-LI. The results indicate that in the PVN, in addition to the CRF neurons, certain peptidergic neurons in the parvocellular part of the PVN, without any established role in the control of ACTH synthesis and release, may also be under glucocorticoid control. This seems to be the case also for most arcuate neurons.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The aim of the present study was to map immunohistochemically the distribution of the glucocorticoid receptor (GR) in rat skin. Nuclear GR-like immunoreactivity (LI) was found in both epidermis and dermis. In the epidermis, the basal cell layer showed an intense immunoreaction; the lower part of the spinous layer was also labelled. In the dermis, the fibroblasts as well as the sweat glands, sebocytes and adipocytes were GR-immunoreactive (IR). In the root sheath of the hair follicle the staining was most intensive in the outer layer. The endothelial cells comprising the smooth muscle cells of the blood vessels, as well as the arrector pili muscle, showed GR-LI. In the peripheral nerves, the immunoreaction was localized to the nuclei of the Schwann cells and in the perineurial fibroblasts. Mast cells did not show nuclear GR-LI. Based on our immunocytochemical findings that several cell types of the skin are GR-IR, the variable physiological and pharmacological effects of glucocorticoids are easier to understand.
    Type of Medium: Electronic Resource
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