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  • 1
    Electronic Resource
    Electronic Resource
    Immunohistochemical localization of the catecholamine-synthesizing enzymes, substance P and enkephalin in the human fetal sympathetic ganglion (1981)
    Springer
    Cell & tissue research 214 (1981), S. 33-42 
    Details
    ISSN: 1432-0878
    Keywords: Sympathetic ganglion (human) ; Tyrosine hydroxylase ; Dopamine-β-hydroxylase ; Phenylethanolamine-N-methyltransferase ; Enkephalin ; Substance P ; SIF cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The human fetal sympathetic ganglia were studied using the indirect peroxidase-antiperoxidase PAP method for immunocytochemical demonstration of three catecholamine-synthesizing enzymes, tyrosine hydroxylase (TH), dopamine-β-hydroxylase (DBH) and phenylethanolamine-N-methyltransferase (PNMT) as well as the neuropeptides leucine (Leu5)-enkephalin and substance P. The neuroblasts of the ganglia showed intense peroxidase immunoreactivity for TH, moderate reaction to DBH, and no reaction to PNMT. The small intensely fluorescent (SIF) cells situated along the blood vessels also showed positive labelling for only two enzymes, TH and DBH. The immunocytochemical localization of these enzymes suggests that both neuroblasts and SIF cells synthesize noradrenalin. Neither the neuroblasts nor SIF cells showed a reaction to substance P, and only the SIF cells contained enkephalin-like immunoreactivity. The role of enkephalin in the noradrenalin-containing SIF cells is unknown, but may be related to neuromodulation of ganglionic transmission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235142
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  • 2
    Electronic Resource
    Electronic Resource
    The adrenal: A new target organ of the calciotropic hormone 1,25-dihydroxyvitamin D3 (1986)
    Springer
    Cell & tissue research 243 (1986), S. 299-302 
    Details
    ISSN: 1432-0878
    Keywords: 1,25-dihydroxyvitamin D3 ; Adrenal medulla ; Ontogenetic development ; Phenylethanolamine-N-methyltransferase ; Vitamin D-dependent calcium-binding protein ; Mouse, rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Target cells for 1,25-dihydroxyvitamin D3 were demonstrated in the adrenal medulla by frozen-section autoradiography. The appearance of these target cells was age-dependent in neonatal mice. Immunocytochemical staining for phenylethanolamine-N-methyltransferase revealed that both epinephrine and non-epinephrine cells concentrate 1,25-dihydroxyvitamin D3 in their nuclei. In contrast, immunocytochemical staining for “vitamin D-dependent calcium-binding protein” (D-CaBP) demonstrated that D-CaBP immunoreactivity is localized in only a small percentage of adrenomedullary cells, in mice and rats. Comparison of PNMT and D-CaBP immunoreactivities in sequential sections showed that epinephrine-producing cells do not contain D-CaBP. These results indicate that adrenal medullary cells have receptors for 1,25-dihydroxyvitamin D3 and that 1,25-dihydroxyvitamin D3 may directly affect certain functions of these endocrine cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00251043
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