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  • Estradiol  (1)
  • Key words: NADPH-diaphorase – Vasopressin – Oxytocin – Coexistence – Hypothalamus – Rat (Wistar)  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Estrogenic modulation of met-enkephalin-induced prolactin secretion in rats (1991)
    Springer
    Anatomy and embryology 183 (1991), S. 455-459 
    Details
    ISSN: 1432-0568
    Keywords: Prolactin ; Met-enkephalin ; Estradiol ; Immunocytochemistry ; Morphometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to elucidate the possible role of estrogens in the sex-dependent modulation of met-enkephalin-induced prolactin secretion, and the cellular response at adenohypophyseal level, analyses of serum prolactin levels together with a morphometric study of prolactin-immunoreactive cells were carried out following intraventricular administration of the opioid to estrogenprimed male rats. Administration of the opioid led to an increase in the serum levels of the hormone and, morphometrically, a significant increase in the cellular, cytoplasmic and nuclear areas was observed. When naloxone was administered previously, the above, mentioned changes did not appear, and the values found were similar to those observed in the animals treated only with estrogens. The results suggest that the met-enkephalin-induced prolactin secretion is modulated by the gonadal steroid environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00186434
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Coexistence of NADPH-diaphorase with vasopressin and oxytocin in the hypothalamic magnocellular neurosecretory nuclei of the rat (1994)
    Springer
    Cell & tissue research 276 (1994), S. 31-34 
    Details
    ISSN: 1432-0878
    Keywords: Key words: NADPH-diaphorase – Vasopressin – Oxytocin – Coexistence – Hypothalamus – Rat (Wistar)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Coexistence of NADPH-diaphorase with vasopressin and oxytocin was studied in the magnocellular neurosecretory nuclei of the rat hypothalamus by use of sequential histochemical and immunocytochemical techniques in the same sections. Coexistence was found in all the nuclei examined (supraoptic, paraventricular, circular, fornical, and in some isolated neurons located in the hypothalamic area between the paraventricular and supraoptic nuclei). The ratios of neurons expressing both markers (NADPH-diaphorase and vasopressin, NADPH-diaphorase and oxytocin) in each of the nuclei were very similar. Although further studies must be carried out, the partial coexistence found in all nuclei suggests that NADPH-diaphorase is probably not related to general mechanisms involving vasopressin and oxytocin, but rather in specific functions shared by certain hypothalamic neuronal cell populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354781
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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