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  • 2000-2004
  • 1995-1999  (1)
  • 1975-1979  (1)
  • Contact hypersensitivity  (1)
  • Keratinocytes  (1)
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  • 2000-2004
  • 1995-1999  (1)
  • 1975-1979  (1)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 265 (1979), S. 63-69 
    ISSN: 1432-069X
    Keywords: Cell membranes ; Concanavalin A ; Keratinocytes ; Colchicine ; Vinblastine ; Zellmembranen ; Concanavalin A ; Keratinocyten ; Colchicin ; Vinblastin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden Modifikationen in der Verteilung der Bindungsstellen für Concanavalin A (Con A) an Meerschweinchenkeratinocyten vorgenommen, die mit Trypsin isoliert wurden. Es wurde mit Fluorescein markiertes Con A verwandt. Die in vitro-Untersuchungen umfaßten kurzfristige Kulturen, Inkubationen bei 37° C und 4° C und schließlich die Untersuchung von Colchicin und Vincaleucoblastineffekten. Es gelang, verschiedene Färbungsmuster auszulösen (anulär, klein- und großfleckig), die den Con A-Bindungsstellen entsprachen. Diese Umverteilung der Con A-Bindungsstellen zeigte eine Einflußnahme von Con A, Colchicin und Vincaleucoblastin auf diesen Effekt. Diese Ergebnisse zeigen, daß das angewandte System geeignet ist, dynamische Vorgänge an den Keratinocytenmembranen zu untersuchen.
    Notes: Summary Modifications in the distribution of the binding sites for concanavalin A (Con A) were studied on trypsin isolated living guinea pig keratinocytes. Fluorescein-labelled Con A was used and the in vitro procedure has included short-term cultures, experiments at 37° C and 4° C, the study of colchicine and vincaleucoblastine effects. It was possible to induce different patterns of staining corresponding to distinct redistribution of Con A binding sites; the distinct redistribution was correlated to the effects of Con A, colchicine and vincaleucoblastine. These findings demonstrated that the system used was appropriate to the study of some dynamic events on the keratinocytes membranes.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-069X
    Keywords: Contact hypersensitivity ; Trinitrochlorobenzene ; Nonresponsiveness ; Immunoglobulin conjugates ; Interleukin-2/-4 ; Tolerance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Intravenous administration of trinitrophenyl-modified isologous immunoglobulin-induced nonresponsiveness to subsequent epicutaneous painting of sensitizing doses of trinitrochlorobenzene. Isologous immunoglobulin with various degrees of trinitro-phenyl substitution (11.2, 14.3, 27 and 47.3) prevented sensitization. The suppression of contact hypersensitivity was dependent on the dose of tolerogen and was hapten specific. Tolerance was inducible in mice of the strains CBA (H-2k), C57BL/6 (H-2b), and DBA/2 (H-2d) but not in Balb/C (H-2d) mice, suggesting that this trait maps outside the murine major histocompatibility complex. Tolerance induced by trinitro-phenyl-modified immunoglobulin was associated with decreased hapten-induced proliferation of draining lymph-node cells. Unlike in other models of tolerance in which a decreased interleukin-2 to interleukin-4 ratio can be observed, administration of tolerizing trinitrophenylated immunoglobulin was associated with deficient hapten-induced release of both interleukin-2 and interleukin-4.
    Type of Medium: Electronic Resource
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