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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Carbohydrate Research 226 (1992), S. 57-78 
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron Letters 35 (1994), S. 2637-2640 
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Parasitology research 44 (1974), S. 43-58 
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung An der Capillaria hepatica-Infektion der Mastomys natalensis wurden pathophysiologische Studien durchgeführt. Verlaufsuntersuchungen über 12 Wochen p.i. ließen durch maximale Aktivitätsanstiege für Glutamat-Oxalacetat-Transaminase, Glutamat-Pyruvat-Transaminase, Lactat-Dehydrogenase, α-Hydroxybutyrat-Dehydrogenase und Sorbit-Dehydrogenase bis zur 3. Woche p.i. eine zeitliche Korrelation mit der beginnenden Patenz erkennen und diesen Zeitabschnitt unter Berücksichtigung pathophysiologischer, pathohistologischer und parasitologischer Aspekte als akute Phase in das Infektionsgeschehen einordnen. Die im Verlauf der chronischen Phase der C. hepatica-Infektion unter dem Bild einer Zirrhose eintretende Erschöpfung des Lebergewebes spiegelte sich in der Verminderung der Serum-Cholinesterasen und im Abfall der Alkalischen Phosphatase deutlich wider. Die langanhaltende Erhöhung der Sorbit-Dehydrogenase in der chronischen Phase der Erkrankung weist auf die Bedeutung dieses Enzyms in der Verlaufskontrolle von experimentellen Hepatopathien bei Mastomys hin. Die Leucin-Aminopeptidase und die γ-Glutamyl-Transpeptidase zeigten unter den hier untersuchten Infektionsbedingungen keine Veränderungen, die sich eindeutig auf eine Mitbeteiligung des Gallengangsystems hätten beziehen lassen. Die Glutamat-Dehydrogenase wies im Verlauf der Infektion nur geringgradige Veränderungen auf, die dennoch über eine längere Zeit anhielten. Die übrigen Enzyme zeigten bis Versuchsende keine Tendenz zur Normalisierung. Daher wird eine Dauerschädigung der Leber angenommen, deren mögliche Ursachen diskutiert werden.
    Notes: Summary In experimental triasl on the Capillaria hepatica infection of Mastomys natalensis pathophysiological studies have been carried out. The determination of serum enzymes during 12 weeks after infection revealed a maximum increase of glutamic oxalacetic transaminase, glutamic pyruvic transaminase, lactic dehydrogenase and sorbitol dehydrogenase 3 weeks after infection. In correlation with pathophysiological, pathohistological and parasitological aspects the findings indicate the acute phase of infection. The gradual decrease of serum cholinesterase and of serum alkaline phosphatase demonstrate the progressive exhaustion of the liver parenchyma during patency due to cirrhosis. The marked increase of sorbitol dehydrogenase activity in the chronic phase of disease emphasizes the value of the enzyme as indicator of experimental hepatopathia in Mastomys natalensis. After infection with 250 eggs per animal there were no alterations of the serum leucine aminopeptidase and serum γ-glutamyl transpeptidase which may indicate any influence of C. hepatica infection on the biliary system. The determination of glutamic dehydrogenase revealed only slight increase of serum activity but for a longer period. The long and constant elevation of enzyme activities in serum until the end of the observation period points to a persistent liver damage, without tendency of restitution. The possible pathophysiological implications are discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 213 (1980), S. 393-410 
    ISSN: 1432-0878
    Keywords: Choroid plexus ; 5S-antibody (immunoglobulin) ; Immunoelectron microscopy ; Chick ; Tissue culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The choroid plexus from the lateral ventricles of 18-day chick embryos was cultivated as an organ in medium 199 until the degeneration of the stroma. Selected plexuses forming an empty epithelial sac were then incubated with enzyme-treated human immunoglobulin (5S-antibody) and with native human immunoglobulin (7S-antibody). Uptake of the 7S-antibody was observed after 30 min, whereas the 5S-antibody was taken up by the choroid plexus within 1 min, as demonstrated by means of the peroxidase-anti-peroxidase (PAP) technique (Sternberger 1974). The antibodies were located in conspicuous, large vacuoles of the choroid epithelium. Further experiments were performed using only 5S-antibody. In addition to the demonstration of the protein structure of this immunoglobulin, it was also shown that its binding capacity for tetanus toxoid as an antigen remains intact in the intracellular location. It was not possible to observe lysosomal degradation. Moreover, 5S-antibody was detectable in cultures first incubated with 5S-antibody for 30 min and subsequently in antibody-free medium for a further period of 7 to 11 days. The biological significance of the uptake of material from the cerebrospinal fluid and the possibility of the existence of a receptor for 5S-antibody are discussed.
    Type of Medium: Electronic Resource
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