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Untersuchungen zum Stoffwechsel des Digitaliszuckers Digitoxose in der Ratte

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Summary

An NAD dependent “digitoxose dehydrogenase” has been demonstrated in extracts from rat liver; the K m values of this enzyme have been determined. Polyacrylamide disc gel electrophoresis shows that there are at least four different proteins capable of oxidizing digitoxose.

After i.p. injections of digitoxose into normal rats 53.3% of the deoxysugar injected are excreted in the animals’ urine as digitoxose, digitoxonic acid or digi-toxonic-γ-lactone. The corresponding figure for adrenalectomized rats instead of normal animals is 68.3% “Digitoxose dehydrogenase” of the rat liver seems to be a constitutive enzyme. The increased excretion of digitoxonic-lactone following adrenalectomy can be interpreted as a “permissive effect” of the adrenal hormones upon digitoxose metabolism beyond the stage of the digitoxonic lactone.

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© 1969 Springer-Verlag Berlin Heidelberg

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Domschke, W., Meinecke, O., Domagk, G.F. (1969). Untersuchungen zum Stoffwechsel des Digitaliszuckers Digitoxose in der Ratte. In: Habermann, E., et al. Naunyn Schmiedebergs Archiv für Pharmakologie. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-39718-3_317

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  • DOI: https://doi.org/10.1007/978-3-662-39718-3_317

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