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  • Biodegradation  (1)
  • Cell Cultures  (1)
  • Chronic renal failure  (1)
  • Corticosterone  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 50 (1972), S. 226-233 
    ISSN: 1432-1440
    Keywords: Mycoplasma ; Cell Cultures ; Mycoplasma ; Zellkulturen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Für die Forscher, die die Methodologie der Zellkulturen in bezug auf die Deutung ihrer Ergebnisse benutzen, rufen Mycoplasmen, durch ihre häufige Gegenwart in Zellkulturen viele Probleme hervor. In der übersicht werden besprochen die Wirkungen auf den Zellstoffwechsel, auf Chromosomen, Transformationen in maligne Zellen, Anheftung an und Wechselwirkung mit der Zellmembran, intracelluläre Existenz. Beziehungen von Mycoplasmen und Viren, nachgewiesene Mycoplasmen-Arten in Zellkulturen und Methoden zu ihrer Feststellung.
    Notes: Summary The presence of mycoplasmas in tissue cultures has created many problems for investigators employing cell cultures, especially with respect to the interpretation of the results. It was partly because of these problems encountered in mycoplasma-infected tissue cultures that increased attention was paid to this group of organisms and many unique interactions of these organisms with cell cultures, uncultured living cells and viruses were discovered, which have been reviewed in the present paper.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 189 (1989), S. 339-345 
    ISSN: 1433-8580
    Keywords: Chronic renal failure ; Catabolism ; Corticosterone ; RU 38 486 ; Nt-methylhistidine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Patients with chronic renal failure are prone to develop negative nitrogen balance resulting clinically in wasting and malnutrition. To study the role of glucocorticoids in the pathogenesis of uremic catabolism, we determined urinary excretion rates of urea and Nt-methylhistidine in chronically uremic rats with and without RU 38 486, a potent antiglucocorticoid. In comparison to pair-fed non-uremic animals, chronically uremic rats displayed significantly enhanced ureagenesis, as demonstrated by increased urinary urea excretion, and myofibrillar protein breakdown, as indicated by increased excretion rates of urinary Nt-methylhistidine. The administration of RU 38486 to chronically uremic rats, however, did not result in a normalization of urinary excretion of Nt-methylhistidine. Similarily, the antiglucocorticoid did not influence the extent of ureagenesis in our uremic animals, as it was demonstrated by comparable levels of urinary urea excretion. This suggests that glucocorticoids are not involved in the pathogenesis of enhanced catabolism in chronic renal insufficiency.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 20 (1985), S. 407-416 
    ISSN: 1612-1112
    Keywords: Gas chromatography-mass spectrometry ; Size exclusion chromatography ; Crude oil analysis ; Biodegradation ; Biological markers ; C- and H-isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Microorganisms have been isolated from a biodegraded crude oil from the Gifhorn trough, Lower Saxony. A non-degraded crude oil, related to the same source rock as the biodegraded one, was inoculated with the microorganisms found and the course of biodegradation thus initiated was followed by gas and liquid chromatographic techniques. The influence of biodegradation on commonly used oil-to-oil correlation parameters was investigated in detail.
    Type of Medium: Electronic Resource
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