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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 261 (1968), S. 239-251 
    ISSN: 1432-1912
    Keywords: Leucocytes ; Lysosomes ; Enzymes ; Membrane Permeability ; Electron Microscopy ; Sulfhydryl Groups ; Leukocyten ; Lysosomen ; Enzyme ; Membranpermeabilität ; Elektronenmikroskopie ; Sulfhydrylgruppen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Hg-haltige Sulfhydrylreagentien bewirken an isolierten lysosomalen Granula von polymorphkernigen Leukocyten des Rindes in Konzentrationen von 10−3–10−7 M/l Abnahme der optischen Dichte sowie Freisetzung von Kathepsin, saurer Phosphatase und basischen Polypeptiden. Elektronenoptisch kommt es nach Einwirkung von Mersalyl zur Vacuolisierung und Abnahme der elektronenoptischen Dichte der Matrix. Höhere Konzentrationen führen zur Ruptur der Granulamembran. Blockiert man in der Membran von intakten Granula 1 Mol SH pro 22000 g Granulaprotein mit p-Chlormercuribenzoat, so kommt es zur Erhöhung der Permeabilität der Partikel für Enzymproteine.
    Notes: Summary A number of mercury sulfhydryl-reagents act on isolated lysosomal granules of bovine polymorphonuclear leucocytes in concentrations of 10−3 to 10−7 M/l to cause a decrease of optical density and the liberation of acid phosphatase, cathepsin and cationic polypeptides. Electron microscopy of isolated granules after treatment with mersalyl showed a decrease in electron density of the matrix and vacuolisation. Concentrations up to 10−3 M/l destroyed the particles and ruptured their membranes. The number of sulfhydryl groups was estimated at 1 Mol SH per 22000 g of granule protein. Blocking these groups with p-chlormercuribenzoate causes an increase in membrane permeability for enzymes of the lysosomal particles.
    Type of Medium: Electronic Resource
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