Selenkonzentration und Aktivit t der Glutathionperoxydase im Lysat menschlicher Erythrozyten
- 1 October 1976
- journal article
- research article
- Published by Springer Nature in Annals of Hematology
- Vol. 33 (4) , 247-251
- https://doi.org/10.1007/bf00995220
Abstract
Die Selenkonzentration in menschlichen Erythrozyten wurde nach nasser Veraschung des biologischen Materials mit Hilfe einer fluorometrischen Bestimmungsmethode gemessen. In den Erythrozyten derselben Blutproben wurde die Aktivität des Selenoenzyms Glutathionperoxydase (EC 1.11.1.9) mit tertiärem Butylhydroperoxyd als Akzeptorsubstrat bestimmt. Die Ergebnisse lassen erkennen, daß nur etwa 10% des gesamten Selengehaltes menschlicher Erythrozyten an das Enzym gebunden sind. Zwischen der Enzymaktivität und der Selenkonzentration besteht keine Korrelation. Auf der Grundlage dieser Ergebnisse kann vermutet werden, daß der protektive Effekt des Selens in Glutathionperoxydase gegen oxydative Zellschädigung nicht die einzige Funktion dieses Elements sein kann. The concentration of selenium in human red cells was measured by a fluorometric determination method after wet digestion of the biological material. In the red cells from the same blood samples the activity of the selenoenzyme glutathione peroxidase (EC 1.11.1.9) was determined with tertiary butyl hydroperoxide as acceptor substrate. The results show that only 10% of the total selenium content of human red cells is fixed to the enzyme. No correlation between the enzyme activity and the selenium concentration could be found. On the basis of these results can be presumed that the protective effect of selenium in glutathione peroxidase against oxidant damage of cells is not the only biological function of this element.This publication has 8 references indexed in Scilit:
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