Effect of adrenalectomy and steroid treatment on rat skin cytosol glucocorticoid receptor

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Abstract
Using an exchange assay to measure occupied and unoccupied binding sites, the glucocorticoid receptor in rat skin cytosol has been measured after adrenalectomy and parenteral steroid administration. Adrenalectomy increased the number of receptor sites with maximal effect after 5 days, after which numbers decreased to those of intact animals. Injection of adrenalectomized animals with the unlabelled agonist corticosterone resulted in a rapid dose-related decrease in the number of cytosolic receptor sites at 30 min whereas the antagonist progesterone had no effect. It is concluded that changes in glucocorticoid concentration lead to rapid inverse changes in cytosolic receptor. J. Endocr. (1984) 102, 161–165

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