Conclusions
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1.
In animals that received cortisol for 20 days or more the distribution of [3H]cortisol introducedin vivo among the subcellular fractions of the liver was substantially changed in comparison with the control: The relative content of the labeled hormone in the cytosol was decreased, and that in the microsomes, nuclei, and chromatin was increased.
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2.
In experimentsin vivo the binding of [3H]cortisol by the receptor proteins of the liver cytosol of experimental rats was significantly lower than in the control with a simultaneous increase in the incorporation into the nuclei and chromatin.
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3.
Incorporation of [3H]cortisol into the chromatin in the case ofin vitro incubation of a reconstituted homogenate of nuclei and cytosol with the labeled hormone was the highest in the combination of nuclei of experimental rats with cytosol of intact rats. When the nuclei of experimental or intact rats were incubated with cytosol of experimental animals, the binding of [3H]cortisol in the chromatin was 30% lower than when the nuclei were incubated with the cytosol of intact rats.
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Translated from Problemy Éndokrinologii, Vol. 27, No. 3, pp. 43–48, May–June, 1981.
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Argutinskaya, S.V., Arshinova, T.V., Selyatitskaya, V.G. et al. Investigation of the causes of the decrease in enzyme induction after prolonged administration of a hormone: Reception of cortisol in rat liver cells. Neurosci Behav Physiol 12, 380–385 (1982). https://doi.org/10.1007/BF01189299
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DOI: https://doi.org/10.1007/BF01189299