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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 297 (1977), S. S57 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 12
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 163 (1975), S. 503-508 
    ISSN: 1432-0878
    Keywords: Infundibulum ; Gomori-positive elementary granules ; Mammals ; Birds ; Fish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary With the gallocyanine technique (Wittkowski, Bock and Franken, 1970) Gomori-positive substances of the infundibulum can be stained for light- and electron-microscopic examination. In various mammalian species, the size of Gomori-positive elementary granules in the outer layer is markedly different from that in the inner layer of the infundibulum. In general, the granules of the outer layer have less then half the diameter of those of the inner layer. In birds and fish, however, only small differences were found between the granules of both layers. The significance of the results is discussed.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Psychometrika 31 (1966), S. 507-534 
    ISSN: 1860-0980
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract A general method is presented for estimating variance components when the experimental design has one random way of classification and a possibly unbalanced fixed classification. The procedure operates on a sample covariance matrix in which the fixed classes play the role of variables and the random classes correspond to observations. Cases are considered which assume (i) homogeneous and (ii) nonhomogeneous error variance, and (iii) arbitrary scale factors in the measurements and homogeneous error variance. The results include maximum-likelihood estimations of the variance components and scale factors, likelihood-ratio tests of the goodness-of-fit of the model assumed for the design, and large-sample variances and covariances of the estimates. Applications to mental test data are presented. In these applications the subjects constitute the random dimension of the design, and a classification of the mental tests according to objective features of format or content constitute the fixed dimensions.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neural transmission 30 (1967), S. 145-153 
    ISSN: 1435-1463
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A disruption of the protein metabolism in the dog was brought about by intravenous injection of ethionine; it took the form of a three-phase change in the serumglykogenase activity, and morphological changes in the liver, the exocrine parenchyma of the pancreas and the alpha cells of the Islets of Langerhans. In the supraoptico-hypophyseal system, no morphological reactions due to ethionine intoxication were determinable. This result supports the assertions ofOckenfels andWerner (1965) to the effect that such morphological changes in this system as observed in dogs with alloxan diabetes could be attributable to its specific reaction to a disruption of the carbohydrate metabolism. In the small-celled region of the hypothalamus, the pancreatitis produced by ethionine led to changes similiar to those resulting from alloxan diabetes.
    Abstract: Résumé Par l'application intraveineuse d'éthionine, on provoqua chez des chiens une perturbation du métabolisme de la protéine qui s'exprima dans une modification triphasique de l'activité de la glycogénase du sérum, ainsi que dans les modifications morphologiques du foie, du parenchyme pancréatique excrétoire, et des cellules A des îles de Langerhans. L'intoxication d'éthionine n'a montré aucune réaction morphologique dans le système supraoptico-hypophysaire. Ce résultat s'appuie sur les déclarations d'Ockenfels etWerner (1965), d'après lesquelles les modifications morphologiques constatées dans ce système, chez les chiens diabétiques alloxaniques pourraient être une réaction spécifique à une perturbation du métabolisme de l'hydrate de carbone. Dans la région de l'hypothalame à petites cellules, la pancréatite d'éthionine mena à des perturbations semblables à celles du diabète alloxanique.
    Notes: Zusammenfassung Durch intravenöse Applikation von Äthionin wurde bei Hunden eine Störung des Eiweißstoffwechsels hervorgerufen, die ihren Ausdruck in einer dreiphasischen Veränderung der Serumglykogenase-Aktivität sowie in morphologischen Veränderungen der Leber, des exkretorischen Pankreasparenchyms und der A-Zellen der Langerhansschen Inseln fand. Im supraoptico-hypophysären System ließen sich keine morphologischen Reaktionen auf die Äthioninintoxikation feststellen. Dieses Ergebnis stützt die Aussagen vonOckenfels undWerner (1965), wonach die bei alloxandiabetischen Hunden beobachteten morphologischen Veränderungen an diesem System eine spezifische Reaktion auf eine Störung des Kohlenhydratstoffwechsels sein könnten. Im Bereich des kleinzelligen Hypothalamus führte die Äthioninpankreatitis zu ähnlichen Veränderungen wie der Alloxandiabetes.
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 96 (1969), S. 142-150 
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Nach beidseitiger Adrenalektomie oder nach Hypophysektomie kommt es bei Ratte und Maus zu einer starken Vermehrung „gomoripositiver“ Granula in der Zona externa infundibuli. Durch Zufuhr von Corticoiden bei adrenalektomierten Tieren oder Applikation von ACTH bei hypophysektomierten Tieren wird die Vermehrung der Granula eingeschränkt oder verhindert. Die Befunde werden als weiterer Hinweis dafür betrachtet, daß die „gomoripositiven“ Granula der Zona externa infundibuli von Ratte und Maus als morphologisches Äquivalent eines Corticotropin-releasing-factors bzw. seines Trägerproteins aufzufassen sind.
    Notes: Summary Following bilateral adrenalectomy or after hypophysectomy a marked increase of “Gomori-positive” granules is observed in the outer layer of the median eminence of the rat and mouse. This accumulation of granules can be diminished or inhibited in the adrenalectomized animals by administration of corticoids and in the hypophysectomized animals by application of ACTH. The findings are regarded as a further indication that the „Gomori-positive“ granules of the outer layer of the median eminence of the rat and mouse represent the morphological equivalent of a corticotropin-releasing-factor or alternatively of its carrier protein.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 92 (1968), S. 130-148 
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Am Infundibulum der normalen weißen Maus lassen sich eine „gomoripositive“ Zona interna und eine „gomorinegative“ Zona externa unterscheiden. Nach beidseitiger Adrenalektomie tritt vom 6. Tag post Operationem ab in der Zona externa infundibuli eine „gomoripositive“ Substanz auf, die histochemisch dem Neurosekret des supraoptico-hypophysären Systems ähnelt. Sie findet sich nicht bei einseitig adrenalektomierten oder scheinoperierten Mäusen. Die mögliche Identität der Substanz mit dem Trägerprotein des (eines) Corticotropin-releasing-factors wird diskutiert.
    Notes: Summary In the median eminence of the normal white mouse, a “Gomori-positive” internal layer and a “Gomori-negative” external layer can be distinguished. From the sixth day following bilateral adrenalectomy, a “Gomori-positive” substance appears in the external layer, which shows a histochemical similarity to the neurosecretory substance of the supraoptico-hypophyseal system. This does not occur after unilateral adrenalectomy or sham-operation. The possibility, that this substance is identical with the carrier protein of the (of a) corticotropin releasing-factor, is discussed.
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung An Embryonen und Jungtieren von Maus und Huhn wurde die Entwicklung des neurosekretorischen hypothalamo-hypophysären Systems untersucht. Dabei gelang es, neurosekretorisches Material in den Perikaryen des Systems zum gleichen Zeitpunkt nachzuweisen, zu dem es in der Neurohypophyse erstmalig auftrat. In vergleichend-anatomischen Untersuchungen an erwachsenen Tieren ließ sich bei einer Reihe von Säugetierarten Neurosekret im Verlauf des gesamten Neurons sichtbar machen. Korrespondierende Neuronabschnitte verschiedener Spezies enthielten dabei vergleichbare Neurosekretmengen. Die Befunde wurden mit verbesserten Verfahren zur färberischen Darstellung von Neurosekret gewonnen. Die von ihnen abweichenden Ergebnisse früherer Untersuchungen beruhen auf unzulänglichen Methoden und können daher nicht gegen die Hypothese eines intraaxonalen Neurosekret-Transportes ins Feld geführt werden.
    Notes: Summary The development of the neurosecretory hypothalamo-hypophyseal system of mouse and chick embryos has been studied. Neurosecretory granules could be identified in the perikarya of the neurosecretory cells simultaneously with their first appearance in the neurohypophysis. Subsequently, a variety of adult mammalian species was investigated. In all cases, neurosecretory material could be demonstrated along the whole length of the neurons. Comparison of corresponding parts of the neurons showed them to contain comparable amounts of neurosecretory material. The investigations were carried out with improved techniques for staining neurosecretory material. Results of earlier investigations, inconsistent with these findings, were obtained with inadequate methods and cannot be regarded as contradicting the hypothesis of an intraaxonal transport of neurosecretory material.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1573-3297
    Keywords: linkage ; X chromosome ; lod score ; quantitative character ; major gene ; marker locus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract A sequential lod-score method is proposed for detecting linkage on the X chromosome between a marker locus and the locus of a major gene influencing a quantitative trait. The method uses information from sons of doubly heterozygous mothers. The average number of families required to detect linkage is substantially less than that of the fixed sample-size method proposed by Hill.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 185 (1977), S. 215-229 
    ISSN: 1432-0878
    Keywords: CRF-granules ; Adrenalectomy ; Hypothalamic lesions ; Rat ; Histology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Axons terminating in the outer layer of the median eminence of rats contain light microscopically visible granules. The granules are assumed to represent a corticotropin-releasing factor and, therefore, are called CRF granules. To find out whether neurons containing CRF-granules originate and run together with the neurons of the hypothalamus-neural lobe system (HNS), the effect of unilateral lesions in the HNS on the amount and distribution of CRF-granules was studied in bilaterally adrenalectomized rats. HNS lesions prevented the adrenalectomy-induced increase in CRF granules on the side of the lesion. Lesions outside the HNS or sham lesions did not influence the amount and distribution of the granules. The findings suggest that CRF-granules are located in terminals of neurons whose perikarya are situated in magnocellular hypothalamic nuclei. It can also be concluded that the axons of these neurons run within the HNS and do not decussate.
    Type of Medium: Electronic Resource
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