TY - JOUR A1 - Busse, E. T1 - Wirkung von Glia-Maturationsfaktor (GMF) und Adhäsionsfaktor (ADF) auf Kulturen leukämischer Zellen T1 - Effect of Glia Maturation Factor (GMF) and Adhesion Factor (ADF) on Cultures of Leukaemic Cells T2 - Zeitschrift für Naturforschung, B N2 - GMF was isolated from the glia of different brain parts of calf. Its influence on the input of 3H-TdR was tested in leukaemic and non-malignant lymphocites. GMF isolated from the diencephalon proved to be the most effective one. The used substance of reference was DBcAMP. The cAMP contents of leukaemic cells were lower than those of non-malignant cells, whereas the level of cGMP was higher in the first ones. We found both in non-malignant cultures and in cultures of leukaemic cells that the impact of GMF and AdF elevated the cAMP value and reduced cGMP. The adhesion of cAMP to the nuclei of leukaemic was reduced in comparison with non-malignant cells. The nuclei of leukaemic cells showed increased adhesive capacity after pre-incubation with GMF and AdF. The adhesive capacity of non-malignant nuclei remained unchanged. The adenylcyclase activity (AC) was diminished in leukaemic cells. It could not be stimulated by means of catecholamines. GMF and AdF produced a slight increase of the basal Ac activity in cultures of leukaemic cells only. But isoproterenol led to a distinct increase of the Ac activity in leukaemic cells when incubation with those two factors preceded it. KW - Glia Maturation Factor KW - Adhesion Factor KW - Leukaemic Cells Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/71433 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-714333 SN - 1865-7117 SN - 0932-0776 VL - 42.1987 IS - 11 SP - 1481 EP - 1486 PB - Verlag der Zeitschrift für Naturforschung CY - Tübingen ER -