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  • Title: Level of glucocorticoid receptors in male rat liver under stress.
    Author: Golikov PP, Bobkova AS, Bobkov AJ.
    Journal: Endokrinologie; 1981 Mar; 77(1):105-8. PubMed ID: 7227323.
    Abstract:
    The binding of dexamethasone and corticosterone by specific glucocorticoid cytoplasmic liver receptors has been studied in intact, adrenalectomized and stressed male Wistar rats. The dissociation constants measured for receptor-hormone complexes were 7.2 x 10(-9) M for dexamethasone and 5.0 x 10(-9) M for corticosterone. Under 48 hour immobilisation stress, the number of binding sites on a dexamethasone-binding receptor was found to diminish from 2.9 x 10(-13) mol/mg protein (for intact rats) to 0.8 x 10(-13) mol/mg protein (for stressed rats). The amount of binding sites on a transcortin-like receptor decreased from 10 x 10(-14) mol/mg protein (in the intact rats) to 2.8 x 10(-14) mol/mg protein (in the stressed ones). Thus above data indicated certain reduction in binding site number for dexamethasone and corticosterone on the specific cytoplasmic receptors of rat liver under immobilisation stress.
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