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  • 2000-2004
  • 1970-1974  (4)
  • 1920-1924
  • 1973  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 51 (1973), S. 471-473 
    ISSN: 1432-1440
    Keywords: de novo synthesis nucleic acids ; orotic acid ; glycine ; l-asparaginase ; methotrexate ; lymphocyte cytoaggressiveness or cytotoxicity ; lymphocyte blastogenesis ; Nucleinsäuren von Lymphocyten ; l-Asparaginase ; lymphocytäre Cytoagressivität
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Menschliche Lymphocyten entwickeln bei einer Stimulierung mit PHA eine de novo-Synthese von Nucleinsäuren, was sich, von der 20. Std von Versuchsbeginn an, in einem zunehmenden Einbau markierter Vorstufen von Purinen und Pyrimidinen in die Nucleinsäuren der Lymphocyten äußert. Immunosuppressiv wirkende Substanzen wie l-Asparaginase, Prednisolon und Azathioprin verhindern diese de novo-Synthesen und gleicherweise die Blastogenese der stimulierten Lymphocyten wie auch ihren cytoaggressiven Effekt. Demgegenüber verhindert Methotrexat diese Reaktionen nicht, obwohl die bekannte Wirkung von Methotrexat auf den Zellstoffwechsel auch bei stimulierten Lymphocyten beobachtet werden kann. Der Mechanismus der immunosuppressiven Wirkung von Methotrexat in vivo wird durch diese Befunde eher unklar.
    Notes: Summary Human lymphocytes develop a de novo synthesis of nucleic acids after stimulation with phytohaemagglutinin (PHA) which is shown by an increasing incorporation of labelled precursors of purines and pyrimidines into the nucleic acids of the lymphocytes beginning at the 20th hour of the experiment. Immunosuppressive substances as l-asparaginase, prednisolone and azathioprine inhibit these de novo syntheses and, likewise, the blastogenesis of the stimulated lymphocytes and their cytoaggressive effect. Methotrexate, however, does not inhibit these reactions, although its well known effect upon the cell metabolism may also be observed with stimulated human lymphocytes. The mechanism of the immunosuppressive effect of methotrexate in vivo is yet rendered less clear by these results.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 60 (1973), S. 484-484 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 27 (1973), S. 131-133 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 26 (1973), S. 216-218 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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