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  • 1980-1984  (3)
  • 1975-1979  (1)
  • 1960-1964
  • Clostridium cylindrosporum  (2)
  • Malignant fibrous histiocytoma  (1)
  • Mikrochirurgischer Darmtransfer  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 121 (1979), S. 255-260 
    ISSN: 1432-072X
    Keywords: Purine fermentation ; Xanthine dehydrogenase ; Selenium ; Tungsten ; Molybdenum ; Clostridium acidiurici ; Clostridium cylindrosporum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The xanthine dehydrogenase of Clostridium acidiurici and C. cylindrosporum was assayed with methyl viologen as acceptor. In C. acidiurici the basal activity level was about 0.3 μmol/min x mg of protein. Cells grown on uric acid in the presence of 10-7 M selenite showed a 14-fold increase in xanthine dehydrogenase activity, which decreased with higher selenite concentrations (10-5 M). The supplementation with 10-7 M molybdate or tungstate was without effect. High concentrations of tungstate decreased the xanthine dehydrogenase if selenite was also present. In comparison, high concentrations of molybdate affected only a small decrease in activity level at the optimal concentration for selenite and relieved to some degree the inhibitory effect of 10-5 M selenite. With hypoxanthine and xanthine as substrates for growth again only the addition of selenite was necessary to show a similar increase in xanthine dehydrogenase activity. C. acidiurici could be grown in a mineral medium. Both xanthine dehydrogenase and formate dehydrogenase exhibited the highest level of activity if selenite and tungstate were present in that medium. In C. cylindrosporum the basal activity level of xanthine dehydrogenase was about 0.95 μmol/min x mg of protein. The addition of 10-7 M selenite to the growth medium increased the activity level about 3-fold, but the highest level (3.7 U/mg) was reached if 10-7 M molybdate was also added. The presence of tungstate resulted in a decreased enzyme activity.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 138 (1984), S. 345-353 
    ISSN: 1432-072X
    Keywords: Clostridium acidiurici ; Clostridium cylindrosporum ; Clostridium purinolyticum ; Purine metabolism ; Selenite ; Antibiogram ; DNA homology ; Taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eleven strains of obligately purinolytic clostridia have been studied with respect to their assignment to the three type strains of Clostridium acidiurici, C. cylindrosporum, and C. purinolyticum. DNA/DNA-hybridization proved to be the method of choice for differentiation whereas phenotypic characteristics such as spore morphology, substrate spectra, nutritional requirements, product formation, and sensitivity against various antibiotics did not allow unequivocal identification. All strains depended on selenite for growth.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 100 (1981), S. 285-293 
    ISSN: 1432-1335
    Keywords: Malignant fibrous histiocytoma ; Renal capsule ; Erythrophago-somes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report about an extremely rare case of malignant fibrous histiocytoma (MFH) of the renal capsule. The tumor is composed of fibroblast-like cells arranged in a storiform pattern and histiocyte-like cells with multinucleated giant cells, both showing no iron reaction. Characteristic of the histiocytic quality of the tumor are numerous PAS-positive intracytoplasmic droplets which can be identified as erythrophagosomes only under the electron microscope. Emphasis is put on the preoperative differential diagnosis of the tumor from renal cell carcinoma as well as on its histogenesis and prognosis.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 355 (1981), S. 651-651 
    ISSN: 1435-2451
    Keywords: Oropharyngeal replacement ; Microsurgical bowel transfer ; Functional adaptation of free bowel grafts ; Oropharynx Ersatz ; Mikrochirurgischer Darmtransfer ; Funktionelle Adaptation transplantierten Darms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An 8 Bastardhunden wurden ausgedehnte oropharyngeale Weichteildefekte durch mikrochirurgisch transplantierte, kontramesenterial eröffnete Dünndarmsegmente gedeckt. Über einen Beobachtungszeitraum von 12 Monaten zeigen unsere klinischen, histologischen, histochemischen und Scannerelektronenoptischen Untersuchungen eine Zunahme der funktionellen Anpassung der Darmschleimhaut mit Abflachung und Verbreiterung der Zotten, Rückgang der Schleimproduktion, Unverletzlichkeit bei mechanischer Belastung und gleichbleibende Konsistenz. Sie dient als adäquate Mundmucosa.
    Notes: Summary In eight mongrel dogs large defects in the cheek, mandible, floor of the mouth, and the tongue were covered with microsurgicatty transplanted bowel segments opened along the antimesenteric border. After transplantation our clinical, histological, histochemical, and scanner-electronoptic findings show for up to 1 year an increasing functional adaptation of the intestinal lining with flattening and widening of the villi, reduction of the mucous production, persisting softness, and invulnerability when under stress mechanically. Free bowel grafts serve as an adequate oral lining.
    Type of Medium: Electronic Resource
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