Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    ISSN: 1432-0568
    Schlagwort(e): Neurosecretion ; Adrenalectomy ; Diabetes insipidus ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The influence of adrenalectomy on the amount of “Gomori-positive” neurosecretory material in the outer layer of the median eminence and in the supraoptico-hypophysial system was studied in normal Long-Evans rats and in Long-Evans rats heterozygous and homozygous for hypothalamic diabetes insipidus. In all non-adrenalectomized rats very few “Gomori-positive” granules were found in the outer median eminence layer. After adrenalectomy the amount of the granules increased markedly in normal Long-Evans rats and only slightly in Long-Evans rats heterozygous for diabetes insipidus. However, no augmentation of the granules occurred in homozygous diabetes insipidus rats. The amount of “Gomori-positive” substances demonstrable in the supraoptic and paraventricular nuclei, in the inner layer of the median eminence, and in the neural lobe of the hypophysis was less in rats heterozygous for diabetes insipidus than in normal Long-Evans rats and the smallest in homozygous diabetes insipidus rats. No differences in the amounts of the substances were observed between adrenalectomized and non-adrenalectomized animals. The findings suggest that the “Gomori-positive” granules occurring in the outer layer of the median eminence of adrenalectomized rats are of similar origin as those of the supraoptico-hypophysial system and represent a vasopressin-neurophysin-complex. The results support the concept that vasopressin is involved in the regulation of ACTH release.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Cell & tissue research 152 (1974), S. 411-421 
    ISSN: 1432-0878
    Schlagwort(e): Median eminence (rat) ; External zone ; Adrenalectomy ; CRF-neurophysin ; Immunoperoxidase histochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary In picric acid-formalin fixed, paraplast embedded median eminence sections from normal and bilaterally adrenalectomized rats, the amount of “Gomori-positive” neurosecretory material and the amount of protein, cross reacting against a porcine neurophysin-II antiserum were determined. In normal rats, “Gomori-positive” substances and neurophysin were confined to the internal zone of the median eminence. After adrenalectomy, however, “Gomori-positive” granules and a neurophysin-like protein also became apparent in the external zone. Their amount increases, if the animals are treated with DOCA from the 15th to the 21st day after the operation. The distribution of the neurophysin-like protein in the external zone is similar to that of the “Gomori-positive” granules. Since the granules are regarded as a morphological correlate of the corticotropin-releasing factor (CRF) it is assumed, that the protein, appearing in the external zone after adrenalectomy and cross-reacting against the neurophysin antiserum is a CRF-associated neurophysin. For this substance the name “CRF-neurophysin” is proposed.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Cell & tissue research 162 (1975), S. 531-539 
    ISSN: 1432-0878
    Schlagwort(e): Human placenta ; Syncytiotrophoblast ; Oxytocinase ; Anti-oxytocinase serum ; Immunofluorescence histochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Oxytocinase (cystine aminopeptidase) was purified from human retroplacental serum by a combination of fractional precipitation, hydroxylapatite chromatography and gel exlusion chromatography on Sephadex G-200. The purified enzyme possessed a specific activity of 980 mIU/mg using L-cystine-di-p-nitroanilide as substrate. This represented a 3200 fold concentration from the starting material in an overall yield of 12%. Antibodies against oxytocinase were raised in rabbits and the γ-globulin fraction labelled with fluorescein isothiocyanate prior to its use in the immunofluorescence histochemical localization of the enzyme in human placental tissue. Oxytocinase was confined to the syncytiotrophoblastic cells of normal term, and immature placentas as well as in placentas from patients suffering from severe toxaemia. Specific immunofluorescence was also present in the outer margins of the chorion and to a lesser extent in the amnion.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...