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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 50 (1972), S. 871-874 
    ISSN: 1432-1440
    Keywords: Lymphocytes ; Phytohemagglutinin ; de novo synthesis of Purines ; Adenine Nucleotides ; Lymphocyten ; Phytohämagglutinin ; Purinde novo Synthese ; Adeninnucleotide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Weder in menschlichen noch in Schweine-Lymphocyten ist nachin vitro Inkorporation mit 1-C14-Glycin eine Markierung freier Adeninnucleotide nachzuweisen. Dies läßt den Schluß zu, daß Lymphocyten des zirkulierenden Blutes unter den angegebenen experimentellen Bedingungen nicht oder nur in unzureichendem Maße befähigt sind, Purinnucleotidede novo zu synthetisieren. Werden die Lymphocyten dagegen mit PHA stimuliert, so kommt es zur Induktion derde novo Synthese von Adeninnucleotiden. Kinetische Studien dieses Prozesses lassen erkennen, daß während der ersten 2 Std nach Zugabe des PHA zur Lymphocytenkultur noch kein, in den folgenden Stunden jedoch ein rascher Anstieg der Synthesevorgänge eintritt.
    Notes: Summary In studying the incorporation of the purine precursor glycine-1-C14 into the adenine nucleotides of human and pig lymphocytesin vitro no labelling of adenine nucleotides could be found. It is therefore concluded that mature circulating lymphocytes do not synthesize purinesde novo. However, by stimulating the lymphocytes with PHA, induction of thede novo synthesis of purine bases could be observed. Kinetic studies of this process show thatde novo synthesis is not detectable within the first 2 hours after the addition of PHA to the lymphocyte culture, but that it increases rapidly in the following hours.
    Type of Medium: Electronic Resource
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