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  • 2000-2004
  • 1975-1979  (2)
  • Iodoinsulin  (1)
  • Kininogenase  (1)
  • 1
    ISSN: 1432-0428
    Keywords: Iodoinsulin ; insulin metabolism ; insulin analogues ; biological activity ; tracer insulin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Insulin, specifically substituted at the PheB1 position with 3,5-diiodotyrosine, has been tested in several biological and immunological systems. Immunoreactivity was assessed using antisera specific for different parts of the insulin molecule. Biological activity in vitro was estimated on isolated rat fat cells. In vivo bioactivity (hypoglycaemia) and metabolism (metabolic and urinary clearance rates, half-life, apparent distribution space) were measured by infusion of the material into greyhounds. The results indicated that this B1-labelled insulin preparation was biologically fully active and, unlike randomly labelled preparations of iodoinsulin, was metabolised with kinetics indistinguishable from those of the unlabelled hormone. We suggest that this material is a valid tracer for insulin, fulfilling the criteria of high specific activity and biological identity to the native hormone.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-2451
    Keywords: Lung edema ; Polytrauma ; Leukocyte ; Kininogenase ; Lungenödem ; Polytrauma ; Leukocyten ; Kininogenase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In experimentellen Untersuchungen wurden Zusammenhänge zwischen posttraumatischen leukocytären Infiltrationen des Lungeninterstitiums und ödematösen Lungenveränderungen aufgezeigt. Aus menschlichem Frischblut wurden Leukocytenkonzentrate hergestellt, deren Lysosomen isoliert und Enzyme extrahiert. Vier neutrale Proteinasen konnten nachgewiesen und durch ihre spezifischen Substrate Bowie ihr Inhibitorspektrum charakterisiert werden. Die leukocytäre Kininogenase ist durch den therapeutisch anwendbaren polyvalenten Proteinaseninhibitor Trasylol®, hemmbar. In Tierversuchen wurde die pathogenetische Bedeutung der Kinine für die Ödembildung nachgewiesen. Der polyvalente leukocytäre Proteinaseninhibitor ist nur in geringer Menge nachweisbar.
    Notes: Summary Experimental investigations were carried out to correlate posttraumatic leukocyte infiltration of lung interstitium and edema formation. From human leukocyte lysosomes, four different neutral proteinases could be extracted and characterized by means of their specific substrates and their inhibitor spectra. Granulocyte kininogenase was sensitive to inhibition by Trasylol®, a polyspecific therapeutic proteinase inhibitor. In morphologic experiments on rabbits, the participation of kinins in the events leading to pulmonary edema is made obvious. The existence of small amounts of a polyvalent proteinase inhibitor of leukocyte origin could be shown.
    Type of Medium: Electronic Resource
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